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Yeast Dynamin And Ypt6 Converge On The Garp For Endosome-To-Golgi Trafficking, Pelin Makaraci
Yeast Dynamin And Ypt6 Converge On The Garp For Endosome-To-Golgi Trafficking, Pelin Makaraci
MSU Graduate Theses
Protein recycling is an important cellular process required for cell homeostasis. Results from prior studies demonstrated that Vps1, a dynamin homologue in yeast, is implicated in protein recycling from the endosome to the trans-Golgi Network (TGN). However, the function of Vps1 in relation to Ypt6, a master GTPase in the recycling pathway, remains unknown. The present study reveals that Vps1 physically interacts with Ypt6 if at least one of them is full-length. It was found that overexpression of full-length Vps1, but not GTP hydrolysis-defective Vps1 mutants, is sufficient to rescue abnormal phenotypes in membrane trafficking pathways provoked by loss …
Yeast Dynamin Associates With The Garp Tethering Complex For Endosome-To-Golgi Traffic, Uma Saimani
Yeast Dynamin Associates With The Garp Tethering Complex For Endosome-To-Golgi Traffic, Uma Saimani
MSU Graduate Theses
Yeast dynamin, Vacuolar Protein Sorting 1 (Vps1), has been implicated in recycling proteins and lipids from the endosome to the trans-Golgi network (TGN). Previous research showed a genetic interaction of Vps1 with all components of the GARP tethering complex, which anchors vesicles at the late Golgi membrane. I used the yeast two-hybrid system and pinpointed a 33 amino acid segment of Vps51, a GARP subunit, that interacts with Vps1. Based on sequence homology between Vps51 and its mammalian homolog ANG2 in the 33 amino acid stretch, I identified two key residues of Vps51, E127, and Y129, that bind Vps1. The …