SGD Paper 
Stimpson HE, et al. (2009) Early-arriving Syp1p and Ede1p function in endocytic site placement and formation in budding yeast. Mol Biol Cell 20(22):4640-51
Abstract: Monitoring Editor: Sandra L. Schmid Recent studies have revealed the detailed timing of protein recruitment to endocytic sites in budding yeast. However, little is understood about the early stages of their formation. Here we identify the septin-associated protein Syp1p as a component of the machinery that drives clathrin-mediated endocytosis in budding yeast. Syp1p arrives at endocytic sites early in their formation, and shares unique dynamics with the EH-domain protein, Ede1p. We find that Syp1p is related in amino acid sequence to several mammalian proteins one of which, SGIP1-alpha, is an endocytic component that binds the Ede1p homolog Eps15. Like Syp1p, SGIP1-alpha arrives early at sites of clathrin-mediated endocytosis, suggesting that Syp1p/Ede1p and SGIP1-alpha/Eps15 may have a conserved function. In yeast, both Syp1p and Ede1p play important roles in the rate of endocytic site turnover. Additionally, Ede1p is important for endocytic site formation, while Syp1p acts as a polarized factor that recruits both Ede1p and endocytic sites to the necks of emerging buds. Thus Ede1p and Syp1p are conserved, early-arriving endocytic proteins with roles in the formation and placement of endocytic sites, respectively.
| Status: Published | Type: Journal Article | PubMed ID: 19776351 |
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