VRG4 protein (Saccharomyces cerevisiae) - STRING interaction network
"VRG4" - Golgi GDP-mannose transporter in Saccharomyces cerevisiae
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Known Interactions
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Predicted Interactions
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Gene Fusion
VRG4Golgi GDP-mannose transporter; regulates Golgi function and glycosylation in Golgi; Involved in the import of GDP-mannose from the cytoplasm into the Golgi lumen. Defective copy causes severe glycosylation defect and abnormal retention of soluble endoplasmic reticulum proteins. Involved in vanadate sensitivity (337 aa)    
Predicted Functional Partners:
Elongase, involved in fatty acid and sphingolipid biosynthesis; synthesizes very long chain 20-26-carbon fatty acids from C18-CoA primers; involved in regulation of sphingolipid biosynthesis; Component of a microsomal membrane bound long-chain fatty acid elongation system, which produces the 20-26-carbon very long-chain fatty acids (VLCFA) from long-chain fatty acid precursors and is involved ceramide and inositol sphingolipid biosynthesis. Component of elongase III, which synthesizes 20-26- carbon fatty acids from 18-carbon-fatty acyl-CoA primers such as stearoyl-CoA by incorporation [...] (345 aa)
Fatty acid elongase, involved in sphingolipid biosynthesis; acts on fatty acids of up to 24 carbons in length; mutations have regulatory effects on 1,3-beta-glucan synthase, vacuolar ATPase, and the secretory pathway; Component of a microsomal membrane-bound long-chain fatty acid elongation system, which produces the 20-26-carbon very long-chain fatty acids (VLCFA) from long-chain fatty acid precursors and is involved ceramide and inositol sphingolipid biosynthesis. Component of elongase II, which elongates 16-18 carbon fatty acyl-CoAs such as palmitoyl-CoA and stearoyl-CoA to 20-22-ca [...] (347 aa)
Protein with a role in UDP-galactose transport to the Golgi lumen, has similarity to human UDP-galactose transporter UGTrel1, exhibits a genetic interaction with S. cerevisiae ERO1; May be involved in specific transport of UDP-Gal from the cytosol to the Golgi lumen. Involved in the maintenance of optimal conditions for the folding of secretory pathway proteins in the endoplasmic reticulum. Overexpression confers resistance to the immunosuppressive drug, leflunomide (339 aa)
Guanosine diphosphatase located in the Golgi, involved in the transport of GDP-mannose into the Golgi lumen by converting GDP to GMP after mannose is transferred its substrate; After transfer of sugars to endogenous macromolecular acceptors, the enzyme converts nucleoside diphosphates to nucleoside monophosphates which in turn exit the Golgi lumen in a coupled antiporter reaction, allowing entry of additional nucleotide sugar from the cytosol (518 aa)
Component of the mannan polymerase I, which contains Van1p and Mnn9p and is involved in the first steps of mannan synthesis; mutants are vanadate-resistant; Involved in regulation of the phosphorylation of a number of proteins, some of which appear to be important in cell growth control (535 aa)
Cis-golgi GTPase-activating protein (GAP) for the Rab family members Ypt1p (in vivo) and for Ypt1p, Sec4p, Ypt7p, and Ypt51p (in vitro); involved in vesicle docking and fusion; Stimulates specifically the GTPase activity of YPT1. Functions on the Golgi as a negative regulator of YPT1 (637 aa)
Uridine diphosphate-N-acetylglucosamine (UDP-GlcNAc) transporter required for cell wall chitin synthesis; localized to the ER; Sugar transporter that specifically mediates the transport of UDP-N-acetylglucosamine (UDP-GlcNAc) and is required for cell wall chitin synthesis (342 aa)
Phosphomannomutase, involved in synthesis of GDP-mannose and dolichol-phosphate-mannose; required for folding and glycosylation of secretory proteins in the ER lumen; Involved in the synthesis of the GDP-mannose and dolichol-phosphate-mannose required for a number of critical mannosyl transfer reactions (254 aa)
Subunit of Golgi mannosyltransferase complex also containing Anp1p, Mnn10p, Mnn11p, and Hoc1p that mediates elongation of the polysaccharide mannan backbone; forms a separate complex with Van1p that is also involved in backbone elongation; The M-Pol I and M-Pol II complexes possess alpha-1,6- mannosyltransferase activity and are probably involved in the elongation of the mannan backbone of N-linked glycans on cell wall and periplasmic proteins. May also provide alpha-1,2- mannosyltransferase activity to the M-Pol I complex (395 aa)
Phosphatidylinositol-ceramide phosphoinositol transferase (IPC synthase), required for sphingolipid synthesis; can mutate to confer aureobasidin A resistance; Catalytic component of the inositol phosphorylceramide synthase which catalyzes the addition of a phosphorylinositol group onto ceramide to form inositol phosphorylceramide, an essential step in sphingolipid biosynthesis (401 aa)
Your Current Organism:
Saccharomyces cerevisiae
NCBI taxonomy Id: 4932
Other names: Candida robusta, Pachytichospora, S. cerevisiae, Saccharomyces, Saccharomyces capensis, Saccharomyces cerevisiae, Saccharomyces italicus, Saccharomyces oviformis, Saccharomyces uvarum var. melibiosus, lager beer yeast, yeast
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