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DSS4 protein (Saccharomyces cerevisiae) - STRING interaction network
"DSS4" - Guanine nucleotide dissociation stimulator for Sec4p, functions in the post-Golgi secretory pathway in Saccharomyces cerevisiae
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Known Interactions
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experimentally determined
Predicted Interactions
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textmining
co-expression
protein homology
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DSS4Guanine nucleotide dissociation stimulator for Sec4p, functions in the post-Golgi secretory pathway; binds zinc, found both on membranes and in the cytosol; Guanine-nucleotide-releasing protein that acts on SEC4. Might play a general role in vesicular transport (143 aa)    
Predicted Functional Partners:
SEC4
Rab family GTPase essential for vesicle-mediated exocytic secretion and autophagy; associates with the exocyst component Sec15p and may regulate polarized delivery of transport vesicles to the exocyst at the plasma membrane; Involved in exocytosis. Maybe by regulating the binding and fusion of secretory vesicles with the cell surface. The GTP- bound form of SEC4 may interact with an effector, thereby stimulating its activity and leading to exocytotic fusion. SEC4 may be an upstream activator of the 19.5S SEC8/SEC15 particle. SEC4 probably interacts directly with SEC8; it could serve as [...] (215 aa)
     
 
  0.999
YPT1
Rab family GTPase, involved in the ER-to-Golgi step of the secretory pathway; complex formation with the Rab escort protein Mrs6p is required for prenylation of Ypt1p by protein geranylgeranyltransferase type II (Bet2p-Bet4p); The small GTPases Rab are key regulators of intracellular membrane trafficking, from the formation of transport vesicles to their fusion with membranes. Rabs cycle between an inactive GDP-bound form and an active GTP-bound form that is able to recruit to membranes different set of downstream effectors directly responsible for vesicle formation, movement, tetherin [...] (206 aa)
       
 
  0.964
YPT31
Rab family GTPase, very similar to Ypt32p; involved in the exocytic pathway; mediates intra-Golgi traffic or the budding of post-Golgi vesicles from the trans-Golgi; Required for protein transport in the secretory pathway. Probably involved in regulation of secretory vesicle formation at the trans-Golgi compartment. Plays a role in autophagy (223 aa)
       
 
  0.830
SEC15
Essential 113kDa subunit of the exocyst complex (Sec3p, Sec5p, Sec6p, Sec8p, Sec10p, Sec15p, Exo70p, and Exo84p), which mediates polarized targeting of vesicles to active sites of exocytosis; Sec15p associates with Sec4p and vesicles; Component of the exocyst complex involved in the docking of exocytic vesicles with fusion sites on the plasma membrane (910 aa)
       
 
  0.781
SEC2
Guanyl-nucleotide exchange factor for the small G-protein Sec4p; essential for post-Golgi vesicle transport and for autophagy; associates with the exocyst, via exocyst subunit Sec15p, on secretory vesicles; Guanine nucleotide exchange factor for SEC4, catalyzing the dissociation of GDP from SEC4 and also potently promoting binding of GTP. Activation of SEC4 by SEC2 is needed for the directed transport of vesicles to sites of exocytosis. Binds the Rab GTPase YPT32, but does not have exhange activity on YPT32 (759 aa)
       
 
  0.772
YHR022C
Putative protein of unknown function; YHR022C is not an essential gene (256 aa)
       
 
  0.760
YPT52
Rab family GTPase, similar to Ypt51p and Ypt53p and to mammalian rab5; required for vacuolar protein sorting and endocytosis; Required for transport in the endocytic pathway and for correct sorting of the vacuolar hydrolases suggesting a possible intersection of the endocytic with the vacuolar sorting pathway (234 aa)
       
 
  0.707
SEC8
Essential 121kDa subunit of the exocyst complex (Sec3p, Sec5p, Sec6p, Sec8p, Sec10p, Sec15p, Exo70p, and Exo84p), which has the essential function of mediating polarized targeting of secretory vesicles to active sites of exocytosis; Component of the exocyst complex involved in the docking of exocytic vesicles with fusion sites on the plasma membrane (1065 aa)
       
 
  0.687
MEU1
Methylthioadenosine phosphorylase (MTAP), catalyzes the initial step in the methionine salvage pathway; affects polyamine biosynthesis through regulation of ornithine decarboxylase (Spe1p) activity; regulates ADH2 gene expression; Catalyzes the reversible phosphorylation of S-methyl-5’- thioadenosine (MTA) to adenine and 5-methylthioribose-1-phosphate. Involved in the breakdown of MTA, a major by-product of polyamine biosynthesis. Responsible for the first step in the methionine salvage pathway after MTA has been generated from S- adenosylmethionine. Has broad substrate specificity wit [...] (337 aa)
       
      0.676
RHO5
Non-essential small GTPase of the Rho/Rac subfamily of Ras-like proteins, likely involved in protein kinase C (Pkc1p)-dependent signal transduction pathway that controls cell integrity; Negatively regulates a MAP kinase branch, downstream of SLT2, of the PKC1-mediated signal transduction pathway (331 aa)
       
 
  0.671
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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