---
_id: '2613'
abstract:
- lang: eng
text: In this investigation, we report identification and characterization of a
95 kDa postsynaptic density protein (PSD-95)/discs-large/ ZO-1 (PDZ) domain-containing
protein termed tamalin, also recently named GRP1-associated scaffold protein (GRASP),
that interacts with group 1 metabotropic glutamate receptors (mGluRs). The yeast
two-hybrid system and in vitro pull-down assays indicated that the PDZ domain-containing,
amino-terminal half of tamalin directly binds to the class I PDZ-binding motif
of group 1 mGluRs. The C-terminal half of tamalin also bound to cytohesins, the
members of guanine nucleotide exchange factors (GEFs) specific for the ADP-ribosylation
factor (ARF) family of small GTP-binding proteins. Tamalin mRNA is expressed predominantly
in the telencephalic region and highly overlaps with the expression of group 1
mGluR mRNAs. Both tamalin and cytohesin-2 were enriched and codistributed with
mGluR1a in postsynaptic membrane fractions. Importantly, recombinant and native
mGluR1a/tamalin/cytohesin-2 complexes were coimmunoprecipitated from transfected
COS-7 cells and rat brain tissue, respectively. Transfection of tamalin and mutant
tamalin lacking a cytohesin-binding domain caused an increase and decrease in
cell-surface expression of mGluR1a in COS-7 cells, respectively. Furthermore,
adenovirus-mediated expression of tamalin and dominant-negative tamalin facilitated
and reduced the neuritic distribution of endogenous mGluR5 in cultured hippocampal
neurons, respectively. The results indicate that tamalin plays a key role in the
association of group 1 mGluRs with the ARF-specific GEF proteins and contributes
to intracellular trafficking and the macromolecular organization of group 1 mGluRs
at synapses.
acknowledgement: This work was supported in part by research grants from the Ministry
of Education, Science and Culture of Japan. We thank Bert Vogelstein for providing
adenoviral recombination vectors and Haruhiko Bito for a gift of the enolase promoter
and technical advice. We are grateful to Atsushi Nishimune and Satoshi Kaneko for
technical advice and Kumlesh K. Dev for careful reading of this manuscript.
article_processing_charge: No
article_type: original
author:
- first_name: Jun
full_name: Kitano, Jun
last_name: Kitano
- first_name: Kouji
full_name: Kimura, Kouji
last_name: Kimura
- first_name: Yoshimitsu
full_name: Yamazaki, Yoshimitsu
last_name: Yamazaki
- first_name: Takeshi
full_name: Soda, Takeshi
last_name: Soda
- first_name: Ryuichi
full_name: Shigemoto, Ryuichi
id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
last_name: Shigemoto
orcid: 0000-0001-8761-9444
- first_name: Yoshiaki
full_name: Nakajima, Yoshiaki
last_name: Nakajima
- first_name: Shigetada
full_name: Nakanishi, Shigetada
last_name: Nakanishi
citation:
ama: Kitano J, Kimura K, Yamazaki Y, et al. Tamalin, a PDZ domain-containing protein,
links a protein complex formation of group 1 metabotropic glutamate receptors
and the guanine nucleotide exchange factor cytohesins. Journal of Neuroscience.
2002;22(4):1280-1289. doi:10.1523/JNEUROSCI.22-04-01280.2002
apa: Kitano, J., Kimura, K., Yamazaki, Y., Soda, T., Shigemoto, R., Nakajima, Y.,
& Nakanishi, S. (2002). Tamalin, a PDZ domain-containing protein, links a
protein complex formation of group 1 metabotropic glutamate receptors and the
guanine nucleotide exchange factor cytohesins. Journal of Neuroscience.
Society for Neuroscience. https://doi.org/10.1523/JNEUROSCI.22-04-01280.2002
chicago: Kitano, Jun, Kouji Kimura, Yoshimitsu Yamazaki, Takeshi Soda, Ryuichi Shigemoto,
Yoshiaki Nakajima, and Shigetada Nakanishi. “Tamalin, a PDZ Domain-Containing
Protein, Links a Protein Complex Formation of Group 1 Metabotropic Glutamate Receptors
and the Guanine Nucleotide Exchange Factor Cytohesins.” Journal of Neuroscience.
Society for Neuroscience, 2002. https://doi.org/10.1523/JNEUROSCI.22-04-01280.2002.
ieee: J. Kitano et al., “Tamalin, a PDZ domain-containing protein, links
a protein complex formation of group 1 metabotropic glutamate receptors and the
guanine nucleotide exchange factor cytohesins,” Journal of Neuroscience,
vol. 22, no. 4. Society for Neuroscience, pp. 1280–1289, 2002.
ista: Kitano J, Kimura K, Yamazaki Y, Soda T, Shigemoto R, Nakajima Y, Nakanishi
S. 2002. Tamalin, a PDZ domain-containing protein, links a protein complex formation
of group 1 metabotropic glutamate receptors and the guanine nucleotide exchange
factor cytohesins. Journal of Neuroscience. 22(4), 1280–1289.
mla: Kitano, Jun, et al. “Tamalin, a PDZ Domain-Containing Protein, Links a Protein
Complex Formation of Group 1 Metabotropic Glutamate Receptors and the Guanine
Nucleotide Exchange Factor Cytohesins.” Journal of Neuroscience, vol. 22,
no. 4, Society for Neuroscience, 2002, pp. 1280–89, doi:10.1523/JNEUROSCI.22-04-01280.2002.
short: J. Kitano, K. Kimura, Y. Yamazaki, T. Soda, R. Shigemoto, Y. Nakajima, S.
Nakanishi, Journal of Neuroscience 22 (2002) 1280–1289.
date_created: 2018-12-11T11:58:40Z
date_published: 2002-02-15T00:00:00Z
date_updated: 2023-07-25T11:34:46Z
day: '15'
doi: 10.1523/JNEUROSCI.22-04-01280.2002
extern: '1'
external_id:
pmid:
- '11850456'
intvolume: ' 22'
issue: '4'
language:
- iso: eng
month: '02'
oa_version: None
page: 1280 - 1289
pmid: 1
publication: Journal of Neuroscience
publication_identifier:
issn:
- 0270-6474
publication_status: published
publisher: Society for Neuroscience
publist_id: '4285'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Tamalin, a PDZ domain-containing protein, links a protein complex formation
of group 1 metabotropic glutamate receptors and the guanine nucleotide exchange
factor cytohesins
type: journal_article
user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17
volume: 22
year: '2002'
...