The yeast endocytic early/sorting compartment exists as an independent sub-compartment within the trans-Golgi network
Toshima JY, Tsukahara A, Nagano M, Tojima T, Siekhaus DE, Nakano A, Toshima J. 2023. The yeast endocytic early/sorting compartment exists as an independent sub-compartment within the trans-Golgi network. eLife. 12, e84850.
Download
Journal Article
| Published
| English
Scopus indexed
Author
Toshima, Junko Y.;
Tsukahara, Ayana;
Nagano, Makoto;
Tojima, Takuro;
Siekhaus, Daria EISTA ;
Nakano, Akihiko;
Toshima, Jiro
Department
Abstract
Although budding yeast has been extensively used as a model organism for studying organelle functions and intracellular vesicle trafficking, whether it possesses an independent endocytic early/sorting compartment that sorts endocytic cargos to the endo-lysosomal pathway or the recycling pathway has long been unclear. The structure and properties of the endocytic early/sorting compartment differ significantly between organisms; in plant cells, the trans-Golgi network (TGN) serves this role, whereas in mammalian cells a separate intracellular structure performs this function. The yeast syntaxin homolog Tlg2p, widely localizing to the TGN and endosomal compartments, is presumed to act as a Q-SNARE for endocytic vesicles, but which compartment is the direct target for endocytic vesicles remained unanswered. Here we demonstrate by high-speed and high-resolution 4D imaging of fluorescently labeled endocytic cargos that the Tlg2p-residing compartment within the TGN functions as the early/sorting compartment. After arriving here, endocytic cargos are recycled to the plasma membrane or transported to the yeast Rab5-residing endosomal compartment through the pathway requiring the clathrin adaptors GGAs. Interestingly, Gga2p predominantly localizes at the Tlg2p-residing compartment, and the deletion of GGAs has little effect on another TGN region where Sec7p is present but suppresses dynamics of the Tlg2-residing early/sorting compartment, indicating that the Tlg2p- and Sec7p-residing regions are discrete entities in the mutant. Thus, the Tlg2p-residing region seems to serve as an early/sorting compartment and function independently of the Sec7p-residing region within the TGN.
Publishing Year
Date Published
2023-07-21
Journal Title
eLife
Acknowledgement
This work was supported by JSPS KAKENHI grant #18K062291, and the Takeda Science Foundation to JYT., as well as JSPS KAKENHI grant #19K065710, the Takeda Science Foundation, and Life Science Foundation of Japan to JT.
Volume
12
Article Number
e84850
eISSN
IST-REx-ID
Cite this
Toshima JY, Tsukahara A, Nagano M, et al. The yeast endocytic early/sorting compartment exists as an independent sub-compartment within the trans-Golgi network. eLife. 2023;12. doi:10.7554/eLife.84850
Toshima, J. Y., Tsukahara, A., Nagano, M., Tojima, T., Siekhaus, D. E., Nakano, A., & Toshima, J. (2023). The yeast endocytic early/sorting compartment exists as an independent sub-compartment within the trans-Golgi network. ELife. eLife Sciences Publications. https://doi.org/10.7554/eLife.84850
Toshima, Junko Y., Ayana Tsukahara, Makoto Nagano, Takuro Tojima, Daria E Siekhaus, Akihiko Nakano, and Jiro Toshima. “The Yeast Endocytic Early/Sorting Compartment Exists as an Independent Sub-Compartment within the Trans-Golgi Network.” ELife. eLife Sciences Publications, 2023. https://doi.org/10.7554/eLife.84850.
J. Y. Toshima et al., “The yeast endocytic early/sorting compartment exists as an independent sub-compartment within the trans-Golgi network,” eLife, vol. 12. eLife Sciences Publications, 2023.
Toshima JY, Tsukahara A, Nagano M, Tojima T, Siekhaus DE, Nakano A, Toshima J. 2023. The yeast endocytic early/sorting compartment exists as an independent sub-compartment within the trans-Golgi network. eLife. 12, e84850.
Toshima, Junko Y., et al. “The Yeast Endocytic Early/Sorting Compartment Exists as an Independent Sub-Compartment within the Trans-Golgi Network.” ELife, vol. 12, e84850, eLife Sciences Publications, 2023, doi:10.7554/eLife.84850.
All files available under the following license(s):
Creative Commons Attribution 4.0 International Public License (CC-BY 4.0):
Main File(s)
File Name
2023_eLife_Toshima.pdf
11.98 MB
Access Level
Open Access
Date Uploaded
2023-07-31
MD5 Checksum
2af111a00cf5e3a956f7f0fd13199b15
Export
Marked PublicationsOpen Data ISTA Research Explorer
Web of Science
View record in Web of Science®Sources
PMID: 37477116
PubMed | Europe PMC