Reference: Pertuiset B, et al. (1995) Molecular cloning of Rab-related genes in the yeast Yarrowia lipolytica. Analysis of RYL1, an essential gene encoding a SEC4 homologue. Curr Genet 27(2):123-30

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Abstract


Small GTP-binding proteins of the Rab family are involved in the vesicular traffic inside eukaryotic cells. A gene library from the yeast Yarrowia lipolytica was screened with an oligonucleotide deduced from a highly conserved sequence in the Rab family. Four different genes were isolated. One of them, RYL1, was shown to be essential for cell viability. RYL1p displayed a high similarity with and tight phylogenetic relationships to SEC4p. When placed under the control of the GAL10 promoter, RYL1 was able to specifically relieve the thermosensitivity of a sec4-8 mutant of Saccharomyces cerevisiae. Therefore, it is proposed that RYL1 is a functional homologue of the S. cerevisiae SEC4 gene and is involved in the fusion of secretory vesicles with the plasma membrane in the general protein secretion pathway.

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Journal Article | Research Support, Non-U.S. Gov't
Authors
Pertuiset B, Beckerich JM, Gaillardin C
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