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Deconvolution of Multiple Rab Binding Domains Using the Batch Yeast 2-Hybrid Method DEEPN
Journal article

Deconvolution of Multiple Rab Binding Domains Using the Batch Yeast 2-Hybrid Method DEEPN

Tabitha A Peterson and Robert C Piper
Methods in molecular biology (Clifton, N.J.), Vol.2293, pp.117-141
2021
DOI: 10.1007/978-1-0716-1346-7_9
PMCID: PMC8524840
PMID: 34453714
url
https://www.ncbi.nlm.nih.gov/pmc/articles/8524840View
Open Access

Abstract

A hallmark of functionally significant interactions between Rab proteins and their targets is whether that binding depends on the type of nucleotide bound to the Rab GTPase. A system that can directly compare those sets of interactions mediated by a Rab in its GTP-bound conformation versus its GDP bound conformation would provide a direct route to finding biologically relevant partners. Comprehensive large-scale yeast 2-hybrid assays allow a potential method to compare one interactome against another provided that the same set of potentially interacting partners is interrogated between samples. Here we describe the use of such a yeast 2-hybrid system that lends itself toward comparing pairs of Rab mutants, locked in either their GTP or GDP conformation. Importantly, using a complex library of protein fragments as potential binding ("prey") partners, identification of interacting proteins as well as the domain(s) mediating those interactions can be determined using a series of sequence analyses and binary validation experiments.
Gene Library Guanosine Triphosphate - metabolism Protein Binding rab GTP-Binding Proteins - genetics rab GTP-Binding Proteins - metabolism Saccharomyces cerevisiae - genetics Saccharomyces cerevisiae - metabolism Two-Hybrid System Techniques

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