Identification of the novel proteins Yip4p and Yip5p as Rab GTPase interacting factors.

Department of Molecular Medicine, Cornell University, Ithaca, NY 14853-6401, USA.
The Rab GTPases are key regulators of membrane traffic. Yip1p is a membrane protein of unknown function that has been reported to interact with the Rabs Ypt1p and Ypt31p. In this study we identify Yif1p, and two unknown open reading frames, Ygl198p and Ygl161p, which we term Yip4p and Yip5p, as Yip1p-related sequences. We demonstrate that the Yip1p-related proteins possess several features: (i) they have a common overall domain topology, (ii) they are capable of biochemical interaction with a variety of Rab proteins in a manner dependent on C-terminal prenylation, and (iii) they share an ability to physically associate with other members of the YIP1 family.
Mesh Terms:
Adaptor Proteins, Signal Transducing, Carrier Proteins, Cell Division, Computational Biology, Databases, Nucleic Acid, Fungal Proteins, Membrane Proteins, Molecular Sequence Data, Open Reading Frames, Plasmids, Protein Binding, Saccharomyces cerevisiae, Saccharomyces cerevisiae Proteins, Schizosaccharomyces, Schizosaccharomyces pombe Proteins, Sequence Homology, Amino Acid, Two-Hybrid System Techniques, Vesicular Transport Proteins, rab GTP-Binding Proteins
FEBS Lett. Mar. 27, 2002; 515(1);89-98 [PUBMED:11943201]
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