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YRB2 protein (Saccharomyces cerevisiae) - STRING interaction network
"YRB2" - Protein of unknown function involved in nuclear processes of the Ran-GTPase cycle in Saccharomyces cerevisiae
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Predicted Interactions
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YRB2Protein of unknown function involved in nuclear processes of the Ran-GTPase cycle; involved in nuclear protein export; contains Ran Binding Domain and FxFG repeats; interacts with Srm1p, GTP-Gsp1p, Rna1p and Crm1p; is not essential; Important for the export of protein containing nuclear export signal (NES) out of the nucleus. Stimulates the GTPase activity of GSP1 (327 aa)    
Predicted Functional Partners:
CRM1
Major karyopherin, involved in export of proteins, RNAs, and ribosomal subunits from the nucleus; exportin; Receptor for the leucine-rich nuclear export signal (NES) (1084 aa)
       
 
  0.992
SRM1
Nucleotide exchange factor for Gsp1p, localizes to the nucleus, required for nucleocytoplasmic trafficking of macromolecules; suppressor of the pheromone response pathway; potentially phosphorylated by Cdc28p; Guanine nucleotide exchange factor that promotes the exchange of GSP1/GSP2-bound GDP by GTP and controls RNA metabolism and transport. Involved in yeast pheromone response pathway and in mRNA metabolism. Involved in nuclear pore complex (NPC) assembly and required for mRNA and ribosome nuclear export. Binds chromatin and is involved NPC-mediated transcriptional control (482 aa)
     
 
  0.986
GSP1
Ran GTPase, GTP binding protein (mammalian Ranp homolog) involved in the maintenance of nuclear organization, RNA processing and transport; regulated by Srm1p, Rna1p, Yrb1p, Yrb2p, Yrp4p, Yrb30p, Cse1p and Kap95p; yeast Gsp2p homolog; GTP-binding protein involved in nucleocytoplasmic transport. Required for the import of protein into the nucleus and also for RNA export. Essential for cell viability. By analogy with Ras, Ran may be activated when GTP is exchanged for bound GDP by RCC1 and inactivated when GTP is hydrolyzed by Ran upon activation by RanGAP1 (219 aa)
       
 
  0.940
GSP2
GTP binding protein (mammalian Ranp homolog) involved in the maintenance of nuclear organization, RNA processing and transport; interacts with Kap121p, Kap123p and Pdr6p (karyophilin betas); Gsp1p homolog that is not required for viability; GTP-binding protein involved in nucleocytoplasmic transport. Required for the import of protein into the nucleus and also for RNA export. Not essential for cell viability (220 aa)
       
 
  0.924
RNA1
GTPase activating protein (GAP) for Gsp1p, involved in nuclear transport; GTPase activator for the nuclear Ras-related regulatory protein GSP1 (Ran), converting it to the putatively inactive GDP- bound state (407 aa)
     
 
  0.869
NTF2
Nuclear envelope protein, interacts with GDP-bound Gsp1p and with proteins of the nuclear pore to transport Gsp1p into the nucleus where it is an essential player in nucleocytoplasmic transport; Facilitates protein transport into the nucleus. Interacts with various nucleoporins and with Ran-GDP. Could be part of a multicomponent system of cytosolic factors that assemble at the pore complex during nuclear import. In vitro, the NTF2-Ran- GDP association, in the presence of GTP, triggers dissociation of the karyopherin alpha-beta complex, allowing nuclear translocation of karyopherin alph [...] (125 aa)
       
 
  0.782
LTV1
Component of the GSE complex; GSE is required for proper sorting of amino acid permease Gap1p; required for ribosomal small subunit export from nucleus; required for growth at low temperature; Involved in protein transport. Non-ribosomal factor required for efficient nuclear export of the ribosomal 40S subunit. Component of the GSE complex, a GTPase complex required for intracellular sorting of GAP1 out of the endosome (463 aa)
       
 
  0.761
NUP120
Subunit of the Nup84p subcomplex of the nuclear pore complex (NPC); required for even distribution of NPCs around the nuclear envelope, involved in establishment of a normal nucleocytoplasmic concentration gradient of the GTPase Gsp1p; the Nup84 sub /.../x has a role in transcription elongation; Functions as a component of the nuclear pore complex (NPC). NPC components, collectively referred to as nucleoporins (NUPs), can play the role of both NPC structural components and of docking or interaction partners for transiently associated nuclear transport factors. NUP120 is involved in nuc [...] (1037 aa)
       
 
  0.682
NUP116
Subunit of the Nup82 subcomplex of the nuclear pore complex; localized to both sides of the pore; contains a repetitive GLFG motif that interacts with mRNA export factor Mex67p and with karyopherin Kap95p; homologous to Nup100p; Functions as a component of the nuclear pore complex (NPC). NPC components, collectively referred to as nucleoporins (NUPs), can play the role of both NPC structural components and of docking or interaction partners for transiently associated nuclear transport factors. Active directional transport is assured by both, a Phe-Gly (FG) repeat affinity gradient for [...] (1113 aa)
       
 
  0.666
GTR1
Cytoplasmic GTP binding protein and negative regulator of the Ran/Tc4 GTPase cycle; component of GSE complex, which is required for sorting of Gap1p; involved in phosphate transport and telomeric silencing; similar to human RagA and RagB; GTPase component of the GSE complex, a GTPase complex required for intracellular sorting of GAP1 out of the endosome. Functionally associated with the inorganic phosphate transporter PHO84. It is probably required for modulation of PHO84 or involved in its intracellular localization (310 aa)
     
 
  0.654
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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