An interaction is inferred when a bait-enzyme fusion protein selectively modifies a vicinal protein with a diffusible reactive product, followed by affinity capture of the modified protein and identification by mass spectrometric methods.

Publication

Comparative proximity biotinylation implicates the small GTPase RAB18 in sterol mobilization and biosynthesis.

Kiss RS, Chicoine J, Khalil Y, Sladek R, Chen H, Pisaturo A, Martin C, Dale JD, Brudenell TA, Kamath A, Kyei-Boahen J, Hafiane A, Daliah G, Alecki C, Hopes TS, Heier M, Aligianis IA, Lebrun JJ, Aspden J, Paci E, Kerksiek A, Luetjohann D, Clayton P, Wills JC, von Kriegsheim A, Nilsson T, Sheridan E, Handley MT

Loss of functional RAB18 causes the autosomal recessive condition Warburg Micro syndrome. To better understand this disease, we used proximity biotinylation to generate an inventory of potential RAB18 effectors. A restricted set of 28 RAB18-interactions were dependent on the binary RAB3GAP1-RAB3GAP2 RAB18-guanine nucleotide exchange factor (GEF) complex. 12 of these 28 interactions are supported by prior reports and we have ... [more]

J Biol Chem Sep. 27, 2023; ();105295 [Pubmed: 37774976]

Throughput

High Throughput

Additional Notes

BioID
HEK293 cells

Curated By

BioGRID

Interaction Summary

RAB18

Gene Ontology Biological Process

Gene Ontology Molecular Function

GDP binding [IBA, ISO]GTP binding [IBA]GTPase activity [IBA]

Gene Ontology Cellular Component

HSP90AA1