---
_id: '14979'
abstract:
- lang: eng
text: Poxviruses are among the largest double-stranded DNA viruses, with members
such as variola virus, monkeypox virus and the vaccination strain vaccinia virus
(VACV). Knowledge about the structural proteins that form the viral core has remained
sparse. While major core proteins have been annotated via indirect experimental
evidence, their structures have remained elusive and they could not be assigned
to individual core features. Hence, which proteins constitute which layers of
the core, such as the palisade layer and the inner core wall, has remained enigmatic.
Here we show, using a multi-modal cryo-electron microscopy (cryo-EM) approach
in combination with AlphaFold molecular modeling, that trimers formed by the cleavage
product of VACV protein A10 are the key component of the palisade layer. This
allows us to place previously obtained descriptions of protein interactions within
the core wall into perspective and to provide a detailed model of poxvirus core
architecture. Importantly, we show that interactions within A10 trimers are likely
generalizable over members of orthopox- and parapoxviruses.
acknowledged_ssus:
- _id: ScienComp
- _id: LifeSc
- _id: EM-Fac
acknowledgement: "We thank A. Bergthaler (Research Center for Molecular Medicine of
the Austrian Academy of Sciences) for providing VACV WR. We thank A. Nicholas and
his team at the ISTA proteomics facility, and S. Elefante at the ISTA Scientific
Computing facility for their support. We also thank F. Fäßler, D. Porley, T. Muthspiel
and other members of the Schur group for support and helpful discussions. We also
thank D. Castaño-Díez for support with Dynamo. We thank D. Farrell for his help
optimizing the Rosetta protocol to refine the atomic model into the cryo-EM map
with symmetry.\r\n\r\nF.K.M.S. acknowledges support from ISTA and EMBO. F.K.M.S.
also received support from the Austrian Science Fund (FWF) grant P31445. This publication
has been made possible in part by CZI grant DAF2021-234754 and grant https://doi.org/10.37921/812628ebpcwg
from the Chan Zuckerberg Initiative DAF, an advised fund of Silicon Valley Community
Foundation (funder https://doi.org/10.13039/100014989) awarded to F.K.M.S.\r\n\r\nThis
research was also supported by the Scientific Service Units (SSUs) of ISTA through
resources provided by Scientific Computing (SciComp), the Life Science Facility
(LSF), and the Electron Microscopy Facility (EMF). We also acknowledge the use of
COSMIC45 and Colabfold46."
article_processing_charge: Yes (in subscription journal)
article_type: original
author:
- first_name: Julia
full_name: Datler, Julia
id: 3B12E2E6-F248-11E8-B48F-1D18A9856A87
last_name: Datler
orcid: 0000-0002-3616-8580
- first_name: Jesse
full_name: Hansen, Jesse
id: 1063c618-6f9b-11ec-9123-f912fccded63
last_name: Hansen
- first_name: Andreas
full_name: Thader, Andreas
id: 3A18A7B8-F248-11E8-B48F-1D18A9856A87
last_name: Thader
- first_name: Alois
full_name: Schlögl, Alois
id: 45BF87EE-F248-11E8-B48F-1D18A9856A87
last_name: Schlögl
orcid: 0000-0002-5621-8100
- first_name: Lukas W
full_name: Bauer, Lukas W
id: 0c894dcf-897b-11ed-a09c-8186353224b0
last_name: Bauer
- first_name: Victor-Valentin
full_name: Hodirnau, Victor-Valentin
id: 3661B498-F248-11E8-B48F-1D18A9856A87
last_name: Hodirnau
- first_name: Florian KM
full_name: Schur, Florian KM
id: 48AD8942-F248-11E8-B48F-1D18A9856A87
last_name: Schur
orcid: 0000-0003-4790-8078
citation:
ama: Datler J, Hansen J, Thader A, et al. Multi-modal cryo-EM reveals trimers of
protein A10 to form the palisade layer in poxvirus cores. Nature Structural
& Molecular Biology. 2024. doi:10.1038/s41594-023-01201-6
apa: Datler, J., Hansen, J., Thader, A., Schlögl, A., Bauer, L. W., Hodirnau, V.-V.,
& Schur, F. K. (2024). Multi-modal cryo-EM reveals trimers of protein A10
to form the palisade layer in poxvirus cores. Nature Structural & Molecular
Biology. Springer Nature. https://doi.org/10.1038/s41594-023-01201-6
chicago: Datler, Julia, Jesse Hansen, Andreas Thader, Alois Schlögl, Lukas W Bauer,
Victor-Valentin Hodirnau, and Florian KM Schur. “Multi-Modal Cryo-EM Reveals Trimers
of Protein A10 to Form the Palisade Layer in Poxvirus Cores.” Nature Structural
& Molecular Biology. Springer Nature, 2024. https://doi.org/10.1038/s41594-023-01201-6.
ieee: J. Datler et al., “Multi-modal cryo-EM reveals trimers of protein A10
to form the palisade layer in poxvirus cores,” Nature Structural & Molecular
Biology. Springer Nature, 2024.
ista: Datler J, Hansen J, Thader A, Schlögl A, Bauer LW, Hodirnau V-V, Schur FK.
2024. Multi-modal cryo-EM reveals trimers of protein A10 to form the palisade
layer in poxvirus cores. Nature Structural & Molecular Biology.
mla: Datler, Julia, et al. “Multi-Modal Cryo-EM Reveals Trimers of Protein A10 to
Form the Palisade Layer in Poxvirus Cores.” Nature Structural & Molecular
Biology, Springer Nature, 2024, doi:10.1038/s41594-023-01201-6.
short: J. Datler, J. Hansen, A. Thader, A. Schlögl, L.W. Bauer, V.-V. Hodirnau,
F.K. Schur, Nature Structural & Molecular Biology (2024).
date_created: 2024-02-12T09:59:45Z
date_published: 2024-02-05T00:00:00Z
date_updated: 2024-03-05T09:27:47Z
day: '05'
ddc:
- '570'
department:
- _id: FlSc
- _id: ScienComp
- _id: EM-Fac
doi: 10.1038/s41594-023-01201-6
external_id:
pmid:
- '38316877'
has_accepted_license: '1'
keyword:
- Molecular Biology
- Structural Biology
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
main_file_link:
- open_access: '1'
url: https://doi.org/10.1038/s41594-023-01201-6
month: '02'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 26736D6A-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P31445
name: Structural conservation and diversity in retroviral capsid
publication: Nature Structural & Molecular Biology
publication_identifier:
eissn:
- 1545-9985
issn:
- 1545-9993
publication_status: epub_ahead
publisher: Springer Nature
quality_controlled: '1'
related_material:
link:
- description: News on ISTA Website
relation: press_release
url: https://ista.ac.at/en/news/down-to-the-core-of-poxviruses/
status: public
title: Multi-modal cryo-EM reveals trimers of protein A10 to form the palisade layer
in poxvirus cores
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2024'
...
---
_id: '15146'
abstract:
- lang: eng
text: The extracellular matrix (ECM) serves as a scaffold for cells and plays an
essential role in regulating numerous cellular processes, including cell migration
and proliferation. Due to limitations in specimen preparation for conventional
room-temperature electron microscopy, we lack structural knowledge on how ECM
components are secreted, remodeled, and interact with surrounding cells. We have
developed a 3D-ECM platform compatible with sample thinning by cryo-focused ion
beam milling, the lift-out extraction procedure, and cryo-electron tomography.
Our workflow implements cell-derived matrices (CDMs) grown on EM grids, resulting
in a versatile tool closely mimicking ECM environments. This allows us to visualize
ECM for the first time in its hydrated, native context. Our data reveal an intricate
network of extracellular fibers, their positioning relative to matrix-secreting
cells, and previously unresolved structural entities. Our workflow and results
add to the structural atlas of the ECM, providing novel insights into its secretion
and assembly.
acknowledged_ssus:
- _id: LifeSc
- _id: ScienComp
- _id: EM-Fac
- _id: M-Shop
acknowledgement: "Open Access funding provided by IST Austria. We thank Armel Nicolas
and his team at the ISTA proteomics facility, Alois Schloegl, Stefano Elefante,
and colleagues at the ISTA Scientific Computing facility, Tommaso Constanzo and
Ludek Lovicar at the Electron Microsocpy Facility (EMF), and Thomas Menner at the
Miba Machine shop for their support. We also thank Wanda Kukulski (University of
Bern) as well as Darío Porley, Andreas Thader, and other members of the Schur group
for helpful discussions. Matt Swulius and Jessica Heebner provided great support
in using Dragonfly. We thank Dorotea Fracciolla (Art & Science) for support in figure
illustration.\r\n\r\nThis research was supported by the Scientific Service Units
of ISTA through resources provided by Scientific Computing, the Lab Support Facility,
and the Electron Microscopy Facility. We acknowledge funding support from the following
sources: Austrian Science Fund (FWF) grant P33367 (to F.K.M. Schur), the Federation
of European Biochemical Societies (to F.K.M. Schur), Niederösterreich (NÖ) Fonds
(to B. Zens), FWF grant E435 (to J.M. Hansen), European Research Council under the
European Union’s Horizon 2020 research (grant agreement No. 724373) (to M. Sixt),
and Jenny and Antti Wihuri Foundation (to J. Alanko). This publication has been
made possible in part by CZI grant DAF2021-234754 and grant DOI https://doi.org/10.37921/812628ebpcwg
from the Chan Zuckerberg Initiative DAF, an advised fund of Silicon Valley Community
Foundation (to F.K.M. Schur)."
article_number: e202309125
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Bettina
full_name: Zens, Bettina
id: 45FD126C-F248-11E8-B48F-1D18A9856A87
last_name: Zens
- first_name: Florian
full_name: Fäßler, Florian
id: 404F5528-F248-11E8-B48F-1D18A9856A87
last_name: Fäßler
orcid: 0000-0001-7149-769X
- first_name: Jesse
full_name: Hansen, Jesse
id: 1063c618-6f9b-11ec-9123-f912fccded63
last_name: Hansen
- first_name: Robert
full_name: Hauschild, Robert
id: 4E01D6B4-F248-11E8-B48F-1D18A9856A87
last_name: Hauschild
orcid: 0000-0001-9843-3522
- first_name: Julia
full_name: Datler, Julia
id: 3B12E2E6-F248-11E8-B48F-1D18A9856A87
last_name: Datler
orcid: 0000-0002-3616-8580
- first_name: Victor-Valentin
full_name: Hodirnau, Victor-Valentin
id: 3661B498-F248-11E8-B48F-1D18A9856A87
last_name: Hodirnau
- first_name: Vanessa
full_name: Zheden, Vanessa
id: 39C5A68A-F248-11E8-B48F-1D18A9856A87
last_name: Zheden
orcid: 0000-0002-9438-4783
- first_name: Jonna H
full_name: Alanko, Jonna H
id: 2CC12E8C-F248-11E8-B48F-1D18A9856A87
last_name: Alanko
orcid: 0000-0002-7698-3061
- first_name: Michael K
full_name: Sixt, Michael K
id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87
last_name: Sixt
orcid: 0000-0002-6620-9179
- first_name: Florian KM
full_name: Schur, Florian KM
id: 48AD8942-F248-11E8-B48F-1D18A9856A87
last_name: Schur
orcid: 0000-0003-4790-8078
citation:
ama: Zens B, Fäßler F, Hansen J, et al. Lift-out cryo-FIBSEM and cryo-ET reveal
the ultrastructural landscape of extracellular matrix. Journal of Cell Biology.
2024;223(6). doi:10.1083/jcb.202309125
apa: Zens, B., Fäßler, F., Hansen, J., Hauschild, R., Datler, J., Hodirnau, V.-V.,
… Schur, F. K. (2024). Lift-out cryo-FIBSEM and cryo-ET reveal the ultrastructural
landscape of extracellular matrix. Journal of Cell Biology. Rockefeller
University Press. https://doi.org/10.1083/jcb.202309125
chicago: Zens, Bettina, Florian Fäßler, Jesse Hansen, Robert Hauschild, Julia Datler,
Victor-Valentin Hodirnau, Vanessa Zheden, Jonna H Alanko, Michael K Sixt, and
Florian KM Schur. “Lift-out Cryo-FIBSEM and Cryo-ET Reveal the Ultrastructural
Landscape of Extracellular Matrix.” Journal of Cell Biology. Rockefeller
University Press, 2024. https://doi.org/10.1083/jcb.202309125.
ieee: B. Zens et al., “Lift-out cryo-FIBSEM and cryo-ET reveal the ultrastructural
landscape of extracellular matrix,” Journal of Cell Biology, vol. 223,
no. 6. Rockefeller University Press, 2024.
ista: Zens B, Fäßler F, Hansen J, Hauschild R, Datler J, Hodirnau V-V, Zheden V,
Alanko JH, Sixt MK, Schur FK. 2024. Lift-out cryo-FIBSEM and cryo-ET reveal the
ultrastructural landscape of extracellular matrix. Journal of Cell Biology. 223(6),
e202309125.
mla: Zens, Bettina, et al. “Lift-out Cryo-FIBSEM and Cryo-ET Reveal the Ultrastructural
Landscape of Extracellular Matrix.” Journal of Cell Biology, vol. 223,
no. 6, e202309125, Rockefeller University Press, 2024, doi:10.1083/jcb.202309125.
short: B. Zens, F. Fäßler, J. Hansen, R. Hauschild, J. Datler, V.-V. Hodirnau, V.
Zheden, J.H. Alanko, M.K. Sixt, F.K. Schur, Journal of Cell Biology 223 (2024).
date_created: 2024-03-21T06:45:51Z
date_published: 2024-03-20T00:00:00Z
date_updated: 2024-03-25T13:03:57Z
day: '20'
ddc:
- '570'
department:
- _id: FlSc
- _id: MiSi
- _id: Bio
- _id: EM-Fac
doi: 10.1083/jcb.202309125
ec_funded: 1
external_id:
pmid:
- '38506714'
file:
- access_level: open_access
checksum: 90d1984a93660735e506c2a304bc3f73
content_type: application/pdf
creator: dernst
date_created: 2024-03-25T12:52:04Z
date_updated: 2024-03-25T12:52:04Z
file_id: '15188'
file_name: 2024_JCB_Zens.pdf
file_size: 11907016
relation: main_file
success: 1
file_date_updated: 2024-03-25T12:52:04Z
has_accepted_license: '1'
intvolume: ' 223'
issue: '6'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 9B954C5C-BA93-11EA-9121-9846C619BF3A
grant_number: P33367
name: Structure and isoform diversity of the Arp2/3 complex
- _id: 7bd318a1-9f16-11ee-852c-cc9217763180
grant_number: E435
name: In Situ Actin Structures via Hybrid Cryo-electron Microscopy
- _id: 25FE9508-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '724373'
name: Cellular navigation along spatial gradients
- _id: 059B463C-7A3F-11EA-A408-12923DDC885E
name: NÖ-Fonds Preis für die Jungforscherin des Jahres am IST Austria
- _id: 2615199A-B435-11E9-9278-68D0E5697425
grant_number: '21317'
name: Spatiotemporal regulation of chemokine-induced signalling in leukocyte chemotaxis
- _id: 62909c6f-2b32-11ec-9570-e1476aab5308
grant_number: CZI01
name: CryoMinflux-guided in-situ visual proteomics and structure determination
publication: Journal of Cell Biology
publication_identifier:
eissn:
- 1540-8140
issn:
- 0021-9525
publication_status: published
publisher: Rockefeller University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Lift-out cryo-FIBSEM and cryo-ET reveal the ultrastructural landscape of extracellular
matrix
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 223
year: '2024'
...
---
_id: '13161'
acknowledgement: Thanks to Jesse Hansen for his suggestions on improving the abstract.
article_processing_charge: No
author:
- first_name: Alois
full_name: Schlögl, Alois
id: 45BF87EE-F248-11E8-B48F-1D18A9856A87
last_name: Schlögl
orcid: 0000-0002-5621-8100
- first_name: Stefano
full_name: Elefante, Stefano
id: 490F40CE-F248-11E8-B48F-1D18A9856A87
last_name: Elefante
- first_name: Victor-Valentin
full_name: Hodirnau, Victor-Valentin
id: 3661B498-F248-11E8-B48F-1D18A9856A87
last_name: Hodirnau
citation:
ama: 'Schlögl A, Elefante S, Hodirnau V-V. Running Windows-applications on a Linux
HPC cluster using WINE. In: ASHPC23 - Austrian-Slovenian HPC Meeting 2023.
EuroCC; :59-59.'
apa: 'Schlögl, A., Elefante, S., & Hodirnau, V.-V. (n.d.). Running Windows-applications
on a Linux HPC cluster using WINE. In ASHPC23 - Austrian-Slovenian HPC Meeting
2023 (pp. 59–59). Maribor, Slovenia: EuroCC.'
chicago: Schlögl, Alois, Stefano Elefante, and Victor-Valentin Hodirnau. “Running
Windows-Applications on a Linux HPC Cluster Using WINE.” In ASHPC23 - Austrian-Slovenian
HPC Meeting 2023, 59–59. EuroCC, n.d.
ieee: A. Schlögl, S. Elefante, and V.-V. Hodirnau, “Running Windows-applications
on a Linux HPC cluster using WINE,” in ASHPC23 - Austrian-Slovenian HPC Meeting
2023, Maribor, Slovenia, pp. 59–59.
ista: 'Schlögl A, Elefante S, Hodirnau V-V. Running Windows-applications on a Linux
HPC cluster using WINE. ASHPC23 - Austrian-Slovenian HPC Meeting 2023. ASHPC:
Austrian-Slovenian HPC Meeting, 59–59.'
mla: Schlögl, Alois, et al. “Running Windows-Applications on a Linux HPC Cluster
Using WINE.” ASHPC23 - Austrian-Slovenian HPC Meeting 2023, EuroCC, pp.
59–59.
short: A. Schlögl, S. Elefante, V.-V. Hodirnau, in:, ASHPC23 - Austrian-Slovenian
HPC Meeting 2023, EuroCC, n.d., pp. 59–59.
conference:
end_date: 2023-06-15
location: Maribor, Slovenia
name: 'ASHPC: Austrian-Slovenian HPC Meeting'
start_date: 2023-06-13
date_created: 2023-06-23T11:01:23Z
date_published: 2023-07-01T00:00:00Z
date_updated: 2023-07-18T09:30:54Z
day: '01'
ddc:
- '000'
department:
- _id: ScienComp
- _id: EM-Fac
file:
- access_level: open_access
checksum: ec8e4295d54171032cdd1b01423eb4a6
content_type: application/pdf
creator: dernst
date_created: 2023-07-18T09:18:55Z
date_updated: 2023-07-18T09:18:55Z
file_id: '13249'
file_name: 2023_ASHPC_Schloegl.pdf
file_size: 316959
relation: main_file
success: 1
file_date_updated: 2023-07-18T09:18:55Z
has_accepted_license: '1'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Submitted Version
page: 59-59
publication: ASHPC23 - Austrian-Slovenian HPC Meeting 2023
publication_status: inpress
publisher: EuroCC
quality_controlled: '1'
status: public
title: Running Windows-applications on a Linux HPC cluster using WINE
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: conference_abstract
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2023'
...
---
_id: '12334'
abstract:
- lang: eng
text: Regulation of the Arp2/3 complex is required for productive nucleation of
branched actin networks. An emerging aspect of regulation is the incorporation
of subunit isoforms into the Arp2/3 complex. Specifically, both ArpC5 subunit
isoforms, ArpC5 and ArpC5L, have been reported to fine-tune nucleation activity
and branch junction stability. We have combined reverse genetics and cellular
structural biology to describe how ArpC5 and ArpC5L differentially affect cell
migration. Both define the structural stability of ArpC1 in branch junctions and,
in turn, by determining protrusion characteristics, affect protein dynamics and
actin network ultrastructure. ArpC5 isoforms also affect the positioning of members
of the Ena/Vasodilator-stimulated phosphoprotein (VASP) family of actin filament
elongators, which mediate ArpC5 isoform–specific effects on the actin assembly
level. Our results suggest that ArpC5 and Ena/VASP proteins are part of a signaling
pathway enhancing cell migration.
acknowledged_ssus:
- _id: ScienComp
- _id: LifeSc
- _id: Bio
- _id: EM-Fac
acknowledgement: "We would like to thank K. von Peinen and B. Denker (Helmholtz Centre
for Infection Research, Braunschweig, Germany) for experimental and technical assistance,
respectively.\r\nThis research was supported by the Scientific Service Units (SSUs)
of ISTA through resources provided by Scientific Computing (SciComp), the Life Science
Facility (LSF), the Imaging and Optics facility (IOF), and the Electron Microscopy
Facility (EMF). We acknowledge support from ISTA and from the Austrian Science Fund
(FWF) (P33367) to F.K.M.S., from the Research Training Group GRK2223 and the Helmholtz
Society to K.R,. and from the Deutsche Forschungsgemeinschaft (DFG) to J.F. and
K.R."
article_number: add6495
article_processing_charge: No
article_type: original
author:
- first_name: Florian
full_name: Fäßler, Florian
id: 404F5528-F248-11E8-B48F-1D18A9856A87
last_name: Fäßler
orcid: 0000-0001-7149-769X
- first_name: Manjunath
full_name: Javoor, Manjunath
id: 305ab18b-dc7d-11ea-9b2f-b58195228ea2
last_name: Javoor
- first_name: Julia
full_name: Datler, Julia
id: 3B12E2E6-F248-11E8-B48F-1D18A9856A87
last_name: Datler
orcid: 0000-0002-3616-8580
- first_name: Hermann
full_name: Döring, Hermann
last_name: Döring
- first_name: Florian
full_name: Hofer, Florian
id: b9d234ba-9e33-11ed-95b6-cd561df280e6
last_name: Hofer
- first_name: Georgi A
full_name: Dimchev, Georgi A
id: 38C393BE-F248-11E8-B48F-1D18A9856A87
last_name: Dimchev
orcid: 0000-0001-8370-6161
- first_name: Victor-Valentin
full_name: Hodirnau, Victor-Valentin
id: 3661B498-F248-11E8-B48F-1D18A9856A87
last_name: Hodirnau
- first_name: Jan
full_name: Faix, Jan
last_name: Faix
- first_name: Klemens
full_name: Rottner, Klemens
last_name: Rottner
- first_name: Florian KM
full_name: Schur, Florian KM
id: 48AD8942-F248-11E8-B48F-1D18A9856A87
last_name: Schur
orcid: 0000-0003-4790-8078
citation:
ama: Fäßler F, Javoor M, Datler J, et al. ArpC5 isoforms regulate Arp2/3 complex–dependent
protrusion through differential Ena/VASP positioning. Science Advances.
2023;9(3). doi:10.1126/sciadv.add6495
apa: Fäßler, F., Javoor, M., Datler, J., Döring, H., Hofer, F., Dimchev, G. A.,
… Schur, F. K. (2023). ArpC5 isoforms regulate Arp2/3 complex–dependent protrusion
through differential Ena/VASP positioning. Science Advances. American Association
for the Advancement of Science. https://doi.org/10.1126/sciadv.add6495
chicago: Fäßler, Florian, Manjunath Javoor, Julia Datler, Hermann Döring, Florian
Hofer, Georgi A Dimchev, Victor-Valentin Hodirnau, Jan Faix, Klemens Rottner,
and Florian KM Schur. “ArpC5 Isoforms Regulate Arp2/3 Complex–Dependent Protrusion
through Differential Ena/VASP Positioning.” Science Advances. American
Association for the Advancement of Science, 2023. https://doi.org/10.1126/sciadv.add6495.
ieee: F. Fäßler et al., “ArpC5 isoforms regulate Arp2/3 complex–dependent
protrusion through differential Ena/VASP positioning,” Science Advances,
vol. 9, no. 3. American Association for the Advancement of Science, 2023.
ista: Fäßler F, Javoor M, Datler J, Döring H, Hofer F, Dimchev GA, Hodirnau V-V,
Faix J, Rottner K, Schur FK. 2023. ArpC5 isoforms regulate Arp2/3 complex–dependent
protrusion through differential Ena/VASP positioning. Science Advances. 9(3),
add6495.
mla: Fäßler, Florian, et al. “ArpC5 Isoforms Regulate Arp2/3 Complex–Dependent Protrusion
through Differential Ena/VASP Positioning.” Science Advances, vol. 9, no.
3, add6495, American Association for the Advancement of Science, 2023, doi:10.1126/sciadv.add6495.
short: F. Fäßler, M. Javoor, J. Datler, H. Döring, F. Hofer, G.A. Dimchev, V.-V.
Hodirnau, J. Faix, K. Rottner, F.K. Schur, Science Advances 9 (2023).
date_created: 2023-01-23T07:26:42Z
date_published: 2023-01-20T00:00:00Z
date_updated: 2023-11-21T08:05:35Z
day: '20'
ddc:
- '570'
department:
- _id: FlSc
- _id: EM-Fac
doi: 10.1126/sciadv.add6495
external_id:
isi:
- '000964550100015'
file:
- access_level: open_access
checksum: ce81a6d0b84170e5e8c62f6acfa15d9e
content_type: application/pdf
creator: dernst
date_created: 2023-01-23T07:45:54Z
date_updated: 2023-01-23T07:45:54Z
file_id: '12335'
file_name: 2023_ScienceAdvances_Faessler.pdf
file_size: 1756234
relation: main_file
success: 1
file_date_updated: 2023-01-23T07:45:54Z
has_accepted_license: '1'
intvolume: ' 9'
isi: 1
issue: '3'
keyword:
- Multidisciplinary
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
project:
- _id: 9B954C5C-BA93-11EA-9121-9846C619BF3A
grant_number: P33367
name: Structure and isoform diversity of the Arp2/3 complex
publication: Science Advances
publication_identifier:
issn:
- 2375-2548
publication_status: published
publisher: American Association for the Advancement of Science
quality_controlled: '1'
related_material:
record:
- id: '14562'
relation: research_data
status: public
scopus_import: '1'
status: public
title: ArpC5 isoforms regulate Arp2/3 complex–dependent protrusion through differential
Ena/VASP positioning
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 9
year: '2023'
...
---
_id: '12262'
abstract:
- lang: eng
text: The AAA-ATPase Drg1 is a key factor in eukaryotic ribosome biogenesis that
initiates cytoplasmic maturation of the large ribosomal subunit. Drg1 releases
the shuttling maturation factor Rlp24 from pre-60S particles shortly after nuclear
export, a strict requirement for downstream maturation. The molecular mechanism
of release remained elusive. Here, we report a series of cryo-EM structures that
captured the extraction of Rlp24 from pre-60S particles by Saccharomyces cerevisiae
Drg1. These structures reveal that Arx1 and the eukaryote-specific rRNA expansion
segment ES27 form a joint docking platform that positions Drg1 for efficient extraction
of Rlp24 from the pre-ribosome. The tips of the Drg1 N domains thereby guide the
Rlp24 C terminus into the central pore of the Drg1 hexamer, enabling extraction
by a hand-over-hand translocation mechanism. Our results uncover substrate recognition
and processing by Drg1 step by step and provide a comprehensive mechanistic picture
of the conserved modus operandi of AAA-ATPases.
acknowledged_ssus:
- _id: EM-Fac
acknowledgement: "We thank M. Fromont-Racine, A. Johnson, J. Woolford, S. Rospert,
J. P. G. Ballesta and\r\nE. Hurt for supplying antibodies. The work was supported
by Boehringer Ingelheim (to\r\nD. H.), the Austrian Science Foundation FWF (grants
32536 and 32977 to H. B.), the\r\nUK Medical Research Council (MR/T012412/1 to A.
J. W.) and the German Research\r\nFoundation (Emmy Noether Programme STE 2517/1-1
and STE 2517/5-1 to F.S.). We\r\nthank Norberto Escudero-Urquijo, Pablo Castro-Hartmann
and K. Dent, Cambridge\r\nInstitute for Medical Research, for their help in cryo-EM
during early phases of this\r\nproject. This research was supported by the Scientific
Service Units of IST Austria through\r\nresources provided by the Electron Microscopy
Facility. We thank S. Keller, Institute of\r\nMolecular Biosciences (Biophysics),
University Graz for support with the quantification of\r\nthe SPR particle release
assay. We thank I. Schaffner, University of Natural Resources and\r\nLife Sciences,
Vienna for her help in early stages of the SPR experiments."
article_processing_charge: No
article_type: original
author:
- first_name: Michael
full_name: Prattes, Michael
last_name: Prattes
- first_name: Irina
full_name: Grishkovskaya, Irina
last_name: Grishkovskaya
- first_name: Victor-Valentin
full_name: Hodirnau, Victor-Valentin
id: 3661B498-F248-11E8-B48F-1D18A9856A87
last_name: Hodirnau
- first_name: Christina
full_name: Hetzmannseder, Christina
last_name: Hetzmannseder
- first_name: Gertrude
full_name: Zisser, Gertrude
last_name: Zisser
- first_name: Carolin
full_name: Sailer, Carolin
last_name: Sailer
- first_name: Vasileios
full_name: Kargas, Vasileios
last_name: Kargas
- first_name: Mathias
full_name: Loibl, Mathias
last_name: Loibl
- first_name: Magdalena
full_name: Gerhalter, Magdalena
last_name: Gerhalter
- first_name: Lisa
full_name: Kofler, Lisa
last_name: Kofler
- first_name: Alan J.
full_name: Warren, Alan J.
last_name: Warren
- first_name: Florian
full_name: Stengel, Florian
last_name: Stengel
- first_name: David
full_name: Haselbach, David
last_name: Haselbach
- first_name: Helmut
full_name: Bergler, Helmut
last_name: Bergler
citation:
ama: Prattes M, Grishkovskaya I, Hodirnau V-V, et al. Visualizing maturation factor
extraction from the nascent ribosome by the AAA-ATPase Drg1. Nature Structural
& Molecular Biology. 2022;29(9):942-953. doi:10.1038/s41594-022-00832-5
apa: Prattes, M., Grishkovskaya, I., Hodirnau, V.-V., Hetzmannseder, C., Zisser,
G., Sailer, C., … Bergler, H. (2022). Visualizing maturation factor extraction
from the nascent ribosome by the AAA-ATPase Drg1. Nature Structural & Molecular
Biology. Springer Nature. https://doi.org/10.1038/s41594-022-00832-5
chicago: Prattes, Michael, Irina Grishkovskaya, Victor-Valentin Hodirnau, Christina
Hetzmannseder, Gertrude Zisser, Carolin Sailer, Vasileios Kargas, et al. “Visualizing
Maturation Factor Extraction from the Nascent Ribosome by the AAA-ATPase Drg1.”
Nature Structural & Molecular Biology. Springer Nature, 2022. https://doi.org/10.1038/s41594-022-00832-5.
ieee: M. Prattes et al., “Visualizing maturation factor extraction from the
nascent ribosome by the AAA-ATPase Drg1,” Nature Structural & Molecular
Biology, vol. 29, no. 9. Springer Nature, pp. 942–953, 2022.
ista: Prattes M, Grishkovskaya I, Hodirnau V-V, Hetzmannseder C, Zisser G, Sailer
C, Kargas V, Loibl M, Gerhalter M, Kofler L, Warren AJ, Stengel F, Haselbach D,
Bergler H. 2022. Visualizing maturation factor extraction from the nascent ribosome
by the AAA-ATPase Drg1. Nature Structural & Molecular Biology. 29(9), 942–953.
mla: Prattes, Michael, et al. “Visualizing Maturation Factor Extraction from the
Nascent Ribosome by the AAA-ATPase Drg1.” Nature Structural & Molecular
Biology, vol. 29, no. 9, Springer Nature, 2022, pp. 942–53, doi:10.1038/s41594-022-00832-5.
short: M. Prattes, I. Grishkovskaya, V.-V. Hodirnau, C. Hetzmannseder, G. Zisser,
C. Sailer, V. Kargas, M. Loibl, M. Gerhalter, L. Kofler, A.J. Warren, F. Stengel,
D. Haselbach, H. Bergler, Nature Structural & Molecular Biology 29 (2022)
942–953.
date_created: 2023-01-16T09:59:06Z
date_published: 2022-09-12T00:00:00Z
date_updated: 2023-08-04T09:52:20Z
day: '12'
ddc:
- '570'
department:
- _id: EM-Fac
doi: 10.1038/s41594-022-00832-5
external_id:
isi:
- '000852942100004'
pmid:
- '36097293'
file:
- access_level: open_access
checksum: 2d5c3ec01718fefd7553052b0b8a0793
content_type: application/pdf
creator: dernst
date_created: 2023-01-30T10:00:04Z
date_updated: 2023-01-30T10:00:04Z
file_id: '12447'
file_name: 2022_NatureStrucMolecBio_Prattes.pdf
file_size: 9935057
relation: main_file
success: 1
file_date_updated: 2023-01-30T10:00:04Z
has_accepted_license: '1'
intvolume: ' 29'
isi: 1
issue: '9'
keyword:
- Molecular Biology
- Structural Biology
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
page: 942-953
pmid: 1
publication: Nature Structural & Molecular Biology
publication_identifier:
eissn:
- 1545-9985
issn:
- 1545-9993
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Visualizing maturation factor extraction from the nascent ribosome by the AAA-ATPase
Drg1
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 29
year: '2022'
...
---
_id: '9540'
abstract:
- lang: eng
text: The hexameric AAA-ATPase Drg1 is a key factor in eukaryotic ribosome biogenesis
and initiates cytoplasmic maturation of the large ribosomal subunit by releasing
the shuttling maturation factor Rlp24. Drg1 monomers contain two AAA-domains (D1
and D2) that act in a concerted manner. Rlp24 release is inhibited by the drug
diazaborine which blocks ATP hydrolysis in D2. The mode of inhibition was unknown.
Here we show the first cryo-EM structure of Drg1 revealing the inhibitory mechanism.
Diazaborine forms a covalent bond to the 2′-OH of the nucleotide in D2, explaining
its specificity for this site. As a consequence, the D2 domain is locked in a
rigid, inactive state, stalling the whole Drg1 hexamer. Resistance mechanisms
identified include abolished drug binding and altered positioning of the nucleotide.
Our results suggest nucleotide-modifying compounds as potential novel inhibitors
for AAA-ATPases.
acknowledged_ssus:
- _id: EM-Fac
acknowledgement: We are deeply grateful to the late Gregor Högenauer who built the
foundation for this study with his visionary work on the inhibitor diazaborine and
its bacterial target. We thank Rolf Breinbauer for insightful discussions on boron
chemistry. We thank Anton Meinhart and Tim Clausen for the valuable discussion of
the manuscript. We are indebted to Thomas Köcher for the MS measurement of the diazaborine-ATPγS
adduct. We thank the team of the VBCF for support during early phases of this work
and the IST Austria Electron Microscopy Facility for providing equipment. The lab
of D.H. is supported by Boehringer Ingelheim. The work was funded by FWF projects
P32536 and P32977 (to H.B.).
article_number: '3483'
article_processing_charge: No
article_type: original
author:
- first_name: Michael
full_name: Prattes, Michael
last_name: Prattes
- first_name: Irina
full_name: Grishkovskaya, Irina
last_name: Grishkovskaya
- first_name: Victor-Valentin
full_name: Hodirnau, Victor-Valentin
id: 3661B498-F248-11E8-B48F-1D18A9856A87
last_name: Hodirnau
- first_name: Ingrid
full_name: Rössler, Ingrid
last_name: Rössler
- first_name: Isabella
full_name: Klein, Isabella
last_name: Klein
- first_name: Christina
full_name: Hetzmannseder, Christina
last_name: Hetzmannseder
- first_name: Gertrude
full_name: Zisser, Gertrude
last_name: Zisser
- first_name: Christian C.
full_name: Gruber, Christian C.
last_name: Gruber
- first_name: Karl
full_name: Gruber, Karl
last_name: Gruber
- first_name: David
full_name: Haselbach, David
last_name: Haselbach
- first_name: Helmut
full_name: Bergler, Helmut
last_name: Bergler
citation:
ama: Prattes M, Grishkovskaya I, Hodirnau V-V, et al. Structural basis for inhibition
of the AAA-ATPase Drg1 by diazaborine. Nature Communications. 2021;12(1).
doi:10.1038/s41467-021-23854-x
apa: Prattes, M., Grishkovskaya, I., Hodirnau, V.-V., Rössler, I., Klein, I., Hetzmannseder,
C., … Bergler, H. (2021). Structural basis for inhibition of the AAA-ATPase Drg1
by diazaborine. Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-021-23854-x
chicago: Prattes, Michael, Irina Grishkovskaya, Victor-Valentin Hodirnau, Ingrid
Rössler, Isabella Klein, Christina Hetzmannseder, Gertrude Zisser, et al. “Structural
Basis for Inhibition of the AAA-ATPase Drg1 by Diazaborine.” Nature Communications.
Springer Nature, 2021. https://doi.org/10.1038/s41467-021-23854-x.
ieee: M. Prattes et al., “Structural basis for inhibition of the AAA-ATPase
Drg1 by diazaborine,” Nature Communications, vol. 12, no. 1. Springer Nature,
2021.
ista: Prattes M, Grishkovskaya I, Hodirnau V-V, Rössler I, Klein I, Hetzmannseder
C, Zisser G, Gruber CC, Gruber K, Haselbach D, Bergler H. 2021. Structural basis
for inhibition of the AAA-ATPase Drg1 by diazaborine. Nature Communications. 12(1),
3483.
mla: Prattes, Michael, et al. “Structural Basis for Inhibition of the AAA-ATPase
Drg1 by Diazaborine.” Nature Communications, vol. 12, no. 1, 3483, Springer
Nature, 2021, doi:10.1038/s41467-021-23854-x.
short: M. Prattes, I. Grishkovskaya, V.-V. Hodirnau, I. Rössler, I. Klein, C. Hetzmannseder,
G. Zisser, C.C. Gruber, K. Gruber, D. Haselbach, H. Bergler, Nature Communications
12 (2021).
date_created: 2021-06-10T14:57:45Z
date_published: 2021-06-09T00:00:00Z
date_updated: 2023-08-08T14:05:26Z
day: '09'
ddc:
- '570'
department:
- _id: EM-Fac
doi: 10.1038/s41467-021-23854-x
external_id:
isi:
- '000664874700014'
pmid:
- '34108481'
file:
- access_level: open_access
checksum: 40fc24c1310930990b52a8ad1142ee97
content_type: application/pdf
creator: cziletti
date_created: 2021-06-15T18:55:59Z
date_updated: 2021-06-15T18:55:59Z
file_id: '9556'
file_name: 2021_NatureComm_Prattes.pdf
file_size: 3397292
relation: main_file
success: 1
file_date_updated: 2021-06-15T18:55:59Z
has_accepted_license: '1'
intvolume: ' 12'
isi: 1
issue: '1'
keyword:
- General Biochemistry
- Genetics and Molecular Biology
- General Physics and Astronomy
- General Chemistry
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
pmid: 1
publication: Nature Communications
publication_identifier:
eissn:
- 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
status: public
title: Structural basis for inhibition of the AAA-ATPase Drg1 by diazaborine
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 12
year: '2021'
...
---
_id: '8744'
abstract:
- lang: eng
text: Understanding the conformational sampling of translation-arrested ribosome
nascent chain complexes is key to understand co-translational folding. Up to now,
coupling of cysteine oxidation, disulfide bond formation and structure formation
in nascent chains has remained elusive. Here, we investigate the eye-lens protein
γB-crystallin in the ribosomal exit tunnel. Using mass spectrometry, theoretical
simulations, dynamic nuclear polarization-enhanced solid-state nuclear magnetic
resonance and cryo-electron microscopy, we show that thiol groups of cysteine
residues undergo S-glutathionylation and S-nitrosylation and form non-native disulfide
bonds. Thus, covalent modification chemistry occurs already prior to nascent chain
release as the ribosome exit tunnel provides sufficient space even for disulfide
bond formation which can guide protein folding.
acknowledgement: 'We acknowledge help from Anja Seybert, Margot Frangakis, Diana Grewe,
Mikhail Eltsov, Utz Ermel, and Shintaro Aibara. The work was supported by Deutsche
Forschungsgemeinschaft in the CLiC graduate school. Work at the Center for Biomolecular
Magnetic Resonance (BMRZ) is supported by the German state of Hesse. The work at
BMRZ has been supported by the state of Hesse. L.S. has been supported by the DFG
graduate college: CLiC.'
article_number: '5569'
article_processing_charge: No
article_type: original
author:
- first_name: Linda
full_name: Schulte, Linda
last_name: Schulte
- first_name: Jiafei
full_name: Mao, Jiafei
last_name: Mao
- first_name: Julian
full_name: Reitz, Julian
last_name: Reitz
- first_name: Sridhar
full_name: Sreeramulu, Sridhar
last_name: Sreeramulu
- first_name: Denis
full_name: Kudlinzki, Denis
last_name: Kudlinzki
- first_name: Victor-Valentin
full_name: Hodirnau, Victor-Valentin
id: 3661B498-F248-11E8-B48F-1D18A9856A87
last_name: Hodirnau
- first_name: Jakob
full_name: Meier-Credo, Jakob
last_name: Meier-Credo
- first_name: Krishna
full_name: Saxena, Krishna
last_name: Saxena
- first_name: Florian
full_name: Buhr, Florian
last_name: Buhr
- first_name: Julian D.
full_name: Langer, Julian D.
last_name: Langer
- first_name: Martin
full_name: Blackledge, Martin
last_name: Blackledge
- first_name: Achilleas S.
full_name: Frangakis, Achilleas S.
last_name: Frangakis
- first_name: Clemens
full_name: Glaubitz, Clemens
last_name: Glaubitz
- first_name: Harald
full_name: Schwalbe, Harald
last_name: Schwalbe
citation:
ama: Schulte L, Mao J, Reitz J, et al. Cysteine oxidation and disulfide formation
in the ribosomal exit tunnel. Nature Communications. 2020;11. doi:10.1038/s41467-020-19372-x
apa: Schulte, L., Mao, J., Reitz, J., Sreeramulu, S., Kudlinzki, D., Hodirnau, V.-V.,
… Schwalbe, H. (2020). Cysteine oxidation and disulfide formation in the ribosomal
exit tunnel. Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-020-19372-x
chicago: Schulte, Linda, Jiafei Mao, Julian Reitz, Sridhar Sreeramulu, Denis Kudlinzki,
Victor-Valentin Hodirnau, Jakob Meier-Credo, et al. “Cysteine Oxidation and Disulfide
Formation in the Ribosomal Exit Tunnel.” Nature Communications. Springer
Nature, 2020. https://doi.org/10.1038/s41467-020-19372-x.
ieee: L. Schulte et al., “Cysteine oxidation and disulfide formation in the
ribosomal exit tunnel,” Nature Communications, vol. 11. Springer Nature,
2020.
ista: Schulte L, Mao J, Reitz J, Sreeramulu S, Kudlinzki D, Hodirnau V-V, Meier-Credo
J, Saxena K, Buhr F, Langer JD, Blackledge M, Frangakis AS, Glaubitz C, Schwalbe
H. 2020. Cysteine oxidation and disulfide formation in the ribosomal exit tunnel.
Nature Communications. 11, 5569.
mla: Schulte, Linda, et al. “Cysteine Oxidation and Disulfide Formation in the Ribosomal
Exit Tunnel.” Nature Communications, vol. 11, 5569, Springer Nature, 2020,
doi:10.1038/s41467-020-19372-x.
short: L. Schulte, J. Mao, J. Reitz, S. Sreeramulu, D. Kudlinzki, V.-V. Hodirnau,
J. Meier-Credo, K. Saxena, F. Buhr, J.D. Langer, M. Blackledge, A.S. Frangakis,
C. Glaubitz, H. Schwalbe, Nature Communications 11 (2020).
date_created: 2020-11-09T07:49:36Z
date_published: 2020-11-04T00:00:00Z
date_updated: 2023-08-22T12:36:07Z
day: '04'
ddc:
- '570'
department:
- _id: EM-Fac
doi: 10.1038/s41467-020-19372-x
external_id:
isi:
- '000592028600001'
file:
- access_level: open_access
checksum: b2688f0347e69e6629bba582077278c5
content_type: application/pdf
creator: dernst
date_created: 2020-11-09T07:56:24Z
date_updated: 2020-11-09T07:56:24Z
file_id: '8745'
file_name: 2020_NatureComm_Schulte.pdf
file_size: 1670898
relation: main_file
success: 1
file_date_updated: 2020-11-09T07:56:24Z
has_accepted_license: '1'
intvolume: ' 11'
isi: 1
keyword:
- General Biochemistry
- Genetics and Molecular Biology
- General Physics and Astronomy
- General Chemistry
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
publication: Nature Communications
publication_identifier:
issn:
- 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Cysteine oxidation and disulfide formation in the ribosomal exit tunnel
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 11
year: '2020'
...
---
_id: '8971'
abstract:
- lang: eng
text: The actin-related protein (Arp)2/3 complex nucleates branched actin filament
networks pivotal for cell migration, endocytosis and pathogen infection. Its activation
is tightly regulated and involves complex structural rearrangements and actin
filament binding, which are yet to be understood. Here, we report a 9.0 Å resolution
structure of the actin filament Arp2/3 complex branch junction in cells using
cryo-electron tomography and subtomogram averaging. This allows us to generate
an accurate model of the active Arp2/3 complex in the branch junction and its
interaction with actin filaments. Notably, our model reveals a previously undescribed
set of interactions of the Arp2/3 complex with the mother filament, significantly
different to the previous branch junction model. Our structure also indicates
a central role for the ArpC3 subunit in stabilizing the active conformation.
acknowledged_ssus:
- _id: ScienComp
- _id: LifeSc
- _id: Bio
- _id: EM-Fac
acknowledgement: "This research was supported by the Scientific Service Units (SSUs)
of IST Austria through resources provided by Scientific Computing (SciComp), the
Life Science Facility (LSF), the BioImaging Facility (BIF), and the Electron Microscopy
Facility (EMF). We also thank Dimitry Tegunov (MPI for Biophysical Chemistry) for
helpful discussions\r\nabout the M software, and Michael Sixt (IST Austria) and
Klemens Rottner (Technical University Braunschweig, HZI Braunschweig) for critical
reading of the manuscript. We also thank Gregory Voth (University of Chicago) for
providing us the MD-derived branch junction model for comparison. The authors acknowledge
support from IST Austria and from the Austrian Science Fund (FWF): M02495 to G.D.
and Austrian Science Fund (FWF): P33367 to F.K.M.S. "
article_number: '6437'
article_processing_charge: No
article_type: original
author:
- first_name: Florian
full_name: Fäßler, Florian
id: 404F5528-F248-11E8-B48F-1D18A9856A87
last_name: Fäßler
orcid: 0000-0001-7149-769X
- first_name: Georgi A
full_name: Dimchev, Georgi A
id: 38C393BE-F248-11E8-B48F-1D18A9856A87
last_name: Dimchev
orcid: 0000-0001-8370-6161
- first_name: Victor-Valentin
full_name: Hodirnau, Victor-Valentin
id: 3661B498-F248-11E8-B48F-1D18A9856A87
last_name: Hodirnau
- first_name: William
full_name: Wan, William
last_name: Wan
- first_name: Florian KM
full_name: Schur, Florian KM
id: 48AD8942-F248-11E8-B48F-1D18A9856A87
last_name: Schur
orcid: 0000-0003-4790-8078
citation:
ama: Fäßler F, Dimchev GA, Hodirnau V-V, Wan W, Schur FK. Cryo-electron tomography
structure of Arp2/3 complex in cells reveals new insights into the branch junction.
Nature Communications. 2020;11. doi:10.1038/s41467-020-20286-x
apa: Fäßler, F., Dimchev, G. A., Hodirnau, V.-V., Wan, W., & Schur, F. K. (2020).
Cryo-electron tomography structure of Arp2/3 complex in cells reveals new insights
into the branch junction. Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-020-20286-x
chicago: Fäßler, Florian, Georgi A Dimchev, Victor-Valentin Hodirnau, William Wan,
and Florian KM Schur. “Cryo-Electron Tomography Structure of Arp2/3 Complex in
Cells Reveals New Insights into the Branch Junction.” Nature Communications.
Springer Nature, 2020. https://doi.org/10.1038/s41467-020-20286-x.
ieee: F. Fäßler, G. A. Dimchev, V.-V. Hodirnau, W. Wan, and F. K. Schur, “Cryo-electron
tomography structure of Arp2/3 complex in cells reveals new insights into the
branch junction,” Nature Communications, vol. 11. Springer Nature, 2020.
ista: Fäßler F, Dimchev GA, Hodirnau V-V, Wan W, Schur FK. 2020. Cryo-electron tomography
structure of Arp2/3 complex in cells reveals new insights into the branch junction.
Nature Communications. 11, 6437.
mla: Fäßler, Florian, et al. “Cryo-Electron Tomography Structure of Arp2/3 Complex
in Cells Reveals New Insights into the Branch Junction.” Nature Communications,
vol. 11, 6437, Springer Nature, 2020, doi:10.1038/s41467-020-20286-x.
short: F. Fäßler, G.A. Dimchev, V.-V. Hodirnau, W. Wan, F.K. Schur, Nature Communications
11 (2020).
date_created: 2020-12-23T08:25:45Z
date_published: 2020-12-22T00:00:00Z
date_updated: 2023-08-24T11:01:50Z
day: '22'
ddc:
- '570'
department:
- _id: FlSc
- _id: EM-Fac
doi: 10.1038/s41467-020-20286-x
external_id:
isi:
- '000603078000003'
file:
- access_level: open_access
checksum: 55d43ea0061cc4027ba45e966e1db8cc
content_type: application/pdf
creator: dernst
date_created: 2020-12-28T08:16:10Z
date_updated: 2020-12-28T08:16:10Z
file_id: '8975'
file_name: 2020_NatureComm_Faessler.pdf
file_size: 3958727
relation: main_file
success: 1
file_date_updated: 2020-12-28T08:16:10Z
has_accepted_license: '1'
intvolume: ' 11'
isi: 1
keyword:
- General Biochemistry
- Genetics and Molecular Biology
- General Physics and Astronomy
- General Chemistry
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
project:
- _id: 9B954C5C-BA93-11EA-9121-9846C619BF3A
grant_number: P33367
name: Structure and isoform diversity of the Arp2/3 complex
- _id: 2674F658-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: M02495
name: Protein structure and function in filopodia across scales
publication: Nature Communications
publication_identifier:
issn:
- 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
link:
- description: News on IST Homepage
relation: press_release
url: https://ist.ac.at/en/news/cutting-edge-technology-reveals-structures-within-cells/
scopus_import: '1'
status: public
title: Cryo-electron tomography structure of Arp2/3 complex in cells reveals new insights
into the branch junction
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 11
year: '2020'
...
---
_id: '9654'
abstract:
- lang: eng
text: RNA polymerase I (Pol I) is a highly processive enzyme that transcribes ribosomal
DNA (rDNA) and regulates growth of eukaryotic cells. Crystal structures of free
Pol I from the yeast Saccharomyces cerevisiae have revealed dimers of the enzyme
stabilized by a 'connector' element and an expanded cleft containing the active
centre in an inactive conformation. The central bridge helix was unfolded and
a Pol-I-specific 'expander' element occupied the DNA-template-binding site. The
structure of Pol I in its active transcribing conformation has yet to be determined,
whereas structures of Pol II and Pol III have been solved with bound DNA template
and RNA transcript. Here we report structures of active transcribing Pol I from
yeast solved by two different cryo-electron microscopy approaches. A single-particle
structure at 3.8 Å resolution reveals a contracted active centre cleft with bound
DNA and RNA, and a narrowed pore beneath the active site that no longer holds
the RNA-cleavage-stimulating domain of subunit A12.2. A structure at 29 Å resolution
that was determined from cryo-electron tomograms of Pol I enzymes transcribing
cellular rDNA confirms contraction of the cleft and reveals that incoming and
exiting rDNA enclose an angle of around 150°. The structures suggest a model for
the regulation of transcription elongation in which contracted and expanded polymerase
conformations are associated with active and inactive states, respectively.
article_processing_charge: No
article_type: letter_note
author:
- first_name: Simon
full_name: Neyer, Simon
last_name: Neyer
- first_name: Michael
full_name: Kunz, Michael
last_name: Kunz
- first_name: Christian
full_name: Geiss, Christian
last_name: Geiss
- first_name: Merle
full_name: Hantsche, Merle
last_name: Hantsche
- first_name: Victor-Valentin
full_name: Hodirnau, Victor-Valentin
id: 3661B498-F248-11E8-B48F-1D18A9856A87
last_name: Hodirnau
- first_name: Anja
full_name: Seybert, Anja
last_name: Seybert
- first_name: Christoph
full_name: Engel, Christoph
last_name: Engel
- first_name: Margot P.
full_name: Scheffer, Margot P.
last_name: Scheffer
- first_name: Patrick
full_name: Cramer, Patrick
last_name: Cramer
- first_name: Achilleas S.
full_name: Frangakis, Achilleas S.
last_name: Frangakis
citation:
ama: Neyer S, Kunz M, Geiss C, et al. Structure of RNA polymerase I transcribing
ribosomal DNA genes. Nature. 2016;540(7634):607-610. doi:10.1038/nature20561
apa: Neyer, S., Kunz, M., Geiss, C., Hantsche, M., Hodirnau, V.-V., Seybert, A.,
… Frangakis, A. S. (2016). Structure of RNA polymerase I transcribing ribosomal
DNA genes. Nature. Springer Nature. https://doi.org/10.1038/nature20561
chicago: Neyer, Simon, Michael Kunz, Christian Geiss, Merle Hantsche, Victor-Valentin
Hodirnau, Anja Seybert, Christoph Engel, Margot P. Scheffer, Patrick Cramer, and
Achilleas S. Frangakis. “Structure of RNA Polymerase I Transcribing Ribosomal
DNA Genes.” Nature. Springer Nature, 2016. https://doi.org/10.1038/nature20561.
ieee: S. Neyer et al., “Structure of RNA polymerase I transcribing ribosomal
DNA genes,” Nature, vol. 540, no. 7634. Springer Nature, pp. 607–610, 2016.
ista: Neyer S, Kunz M, Geiss C, Hantsche M, Hodirnau V-V, Seybert A, Engel C, Scheffer
MP, Cramer P, Frangakis AS. 2016. Structure of RNA polymerase I transcribing ribosomal
DNA genes. Nature. 540(7634), 607–610.
mla: Neyer, Simon, et al. “Structure of RNA Polymerase I Transcribing Ribosomal
DNA Genes.” Nature, vol. 540, no. 7634, Springer Nature, 2016, pp. 607–10,
doi:10.1038/nature20561.
short: S. Neyer, M. Kunz, C. Geiss, M. Hantsche, V.-V. Hodirnau, A. Seybert, C.
Engel, M.P. Scheffer, P. Cramer, A.S. Frangakis, Nature 540 (2016) 607–610.
date_created: 2021-07-14T09:04:24Z
date_published: 2016-12-22T00:00:00Z
date_updated: 2021-07-22T09:22:20Z
day: '22'
doi: 10.1038/nature20561
extern: '1'
external_id:
pmid:
- '27842382'
intvolume: ' 540'
issue: '7634'
language:
- iso: eng
month: '12'
oa_version: None
page: 607-610
pmid: 1
publication: Nature
publication_identifier:
eissn:
- 1476-4687
issn:
- 0028-0836
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Structure of RNA polymerase I transcribing ribosomal DNA genes
type: journal_article
user_id: 6785fbc1-c503-11eb-8a32-93094b40e1cf
volume: 540
year: '2016'
...
---
_id: '9655'
abstract:
- lang: eng
text: Correlative microscopy incorporates the specificity of fluorescent protein
labeling into high-resolution electron micrographs. Several approaches exist for
correlative microscopy, most of which have used the green fluorescent protein
(GFP) as the label for light microscopy. Here we use chemical tagging and synthetic
fluorophores instead, in order to achieve protein-specific labeling, and to perform
multicolor imaging. We show that synthetic fluorophores preserve their post-embedding
fluorescence in the presence of uranyl acetate. Post-embedding fluorescence is
of such quality that the specimen can be prepared with identical protocols for
scanning electron microscopy (SEM) and transmission electron microscopy (TEM);
this is particularly valuable when singular or otherwise difficult samples are
examined. We show that synthetic fluorophores give bright, well-resolved signals
in super-resolution light microscopy, enabling us to superimpose light microscopic
images with a precision of up to 25 nm in the x–y plane on electron micrographs.
To exemplify the preservation quality of our new method we visualize the molecular
arrangement of cadherins in adherens junctions of mouse epithelial cells.
article_processing_charge: No
article_type: original
author:
- first_name: Mario
full_name: Perkovic, Mario
last_name: Perkovic
- first_name: Michael
full_name: Kunz, Michael
last_name: Kunz
- first_name: Ulrike
full_name: Endesfelder, Ulrike
last_name: Endesfelder
- first_name: Stefanie
full_name: Bunse, Stefanie
last_name: Bunse
- first_name: Christoph
full_name: Wigge, Christoph
last_name: Wigge
- first_name: Zhou
full_name: Yu, Zhou
last_name: Yu
- first_name: Victor-Valentin
full_name: Hodirnau, Victor-Valentin
id: 3661B498-F248-11E8-B48F-1D18A9856A87
last_name: Hodirnau
- first_name: Margot P.
full_name: Scheffer, Margot P.
last_name: Scheffer
- first_name: Anja
full_name: Seybert, Anja
last_name: Seybert
- first_name: Sebastian
full_name: Malkusch, Sebastian
last_name: Malkusch
- first_name: Erin M.
full_name: Schuman, Erin M.
last_name: Schuman
- first_name: Mike
full_name: Heilemann, Mike
last_name: Heilemann
- first_name: Achilleas S.
full_name: Frangakis, Achilleas S.
last_name: Frangakis
citation:
ama: Perkovic M, Kunz M, Endesfelder U, et al. Correlative light- and electron microscopy
with chemical tags. Journal of Structural Biology. 2014;186(2):205-213.
doi:10.1016/j.jsb.2014.03.018
apa: Perkovic, M., Kunz, M., Endesfelder, U., Bunse, S., Wigge, C., Yu, Z., … Frangakis,
A. S. (2014). Correlative light- and electron microscopy with chemical tags. Journal
of Structural Biology. Elsevier. https://doi.org/10.1016/j.jsb.2014.03.018
chicago: Perkovic, Mario, Michael Kunz, Ulrike Endesfelder, Stefanie Bunse, Christoph
Wigge, Zhou Yu, Victor-Valentin Hodirnau, et al. “Correlative Light- and Electron
Microscopy with Chemical Tags.” Journal of Structural Biology. Elsevier,
2014. https://doi.org/10.1016/j.jsb.2014.03.018.
ieee: M. Perkovic et al., “Correlative light- and electron microscopy with
chemical tags,” Journal of Structural Biology, vol. 186, no. 2. Elsevier,
pp. 205–213, 2014.
ista: Perkovic M, Kunz M, Endesfelder U, Bunse S, Wigge C, Yu Z, Hodirnau V-V, Scheffer
MP, Seybert A, Malkusch S, Schuman EM, Heilemann M, Frangakis AS. 2014. Correlative
light- and electron microscopy with chemical tags. Journal of Structural Biology.
186(2), 205–213.
mla: Perkovic, Mario, et al. “Correlative Light- and Electron Microscopy with Chemical
Tags.” Journal of Structural Biology, vol. 186, no. 2, Elsevier, 2014,
pp. 205–13, doi:10.1016/j.jsb.2014.03.018.
short: M. Perkovic, M. Kunz, U. Endesfelder, S. Bunse, C. Wigge, Z. Yu, V.-V. Hodirnau,
M.P. Scheffer, A. Seybert, S. Malkusch, E.M. Schuman, M. Heilemann, A.S. Frangakis,
Journal of Structural Biology 186 (2014) 205–213.
date_created: 2021-07-14T09:05:42Z
date_published: 2014-05-01T00:00:00Z
date_updated: 2021-07-22T08:26:32Z
day: '01'
ddc:
- '570'
doi: 10.1016/j.jsb.2014.03.018
extern: '1'
external_id:
pmid:
- '24698954'
file:
- access_level: open_access
checksum: a322991b43cdc5935c99db88d285aa3a
content_type: application/pdf
creator: asandaue
date_created: 2021-07-22T08:06:34Z
date_updated: 2021-07-22T08:06:34Z
file_id: '9701'
file_name: 2014_JournalOfStructuralBiology_Perkovic.pdf
file_size: 3454628
relation: main_file
success: 1
file_date_updated: 2021-07-22T08:06:34Z
has_accepted_license: '1'
intvolume: ' 186'
issue: '2'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc-nd/3.0/
month: '05'
oa: 1
oa_version: Published Version
page: 205-213
pmid: 1
publication: Journal of Structural Biology
publication_identifier:
issn:
- 1047-8477
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: Correlative light- and electron microscopy with chemical tags
tmp:
image: /images/cc_by_nc_nd.png
legal_code_url: https://creativecommons.org/licenses/by-nc-nd/3.0/legalcode
name: Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND
3.0)
short: CC BY-NC-ND (3.0)
type: journal_article
user_id: 6785fbc1-c503-11eb-8a32-93094b40e1cf
volume: 186
year: '2014'
...