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PSR2 protein (Saccharomyces cerevisiae) - STRING interaction network
"PSR2" - Functionally redundant Psr1p homolog, a plasma membrane phosphatase involved in the general stress response in Saccharomyces cerevisiae
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Predicted Interactions
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protein homology
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PSR2Functionally redundant Psr1p homolog, a plasma membrane phosphatase involved in the general stress response; required with Psr1p and Whi2p for full activation of STRE-mediated gene expression, possibly through dephosphorylation of Msn2p; Probable phosphatase. Involved in the response to sodium and lithium ion stress (but not to potassium or sorbitol stress) by inducing transcription of the sodium pump ENA1/PMR2. Acts through a calcineurin-independent pathway and is functionally redundant with PSR1. Also involved in the general stress response; acts together with WHI2 to activate stress [...] (397 aa)    
Predicted Functional Partners:
RPA190
RNA polymerase I largest subunit A190; DNA-dependent RNA polymerases catalyze the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Component of RNA polymerase I (Pol I) which synthesizes ribosomal RNA precursors. Besides, RNA polymerase I has intrinsic RNA cleavage activity. RPA190 and RPA135 both contribute to the polymerase catalytic activity and together form the Pol I active center. In addition, subunit RPA12 contributes a catalytic zinc ribbon that is required for RNA cleavage by Pol I. A single stranded DNA template strand of the promoter i [...] (1664 aa)
       
 
  0.842
TFG1
TFIIF (Transcription Factor II) largest subunit; involved in both transcription initiation and elongation of RNA polymerase II; homologous to human RAP74; TFIIF is a general transcription initiation factor that binds to RNA polymerase II. Its functions include the recruitment of RNA polymerase II to the promoter bound DNA-TBP-TFIIB complex, decreasing the affinity of RNA polymerase II for non-specific DNA, allowing for the subsequent recruitment of TFIIE and TFIIH, and facilitating RNA polymerase II elongation (735 aa)
     
 
  0.821
RPO31
RNA polymerase III largest subunit C160, part of core enzyme; similar to bacterial beta-prime subunit and to RPA190 and RPO21; DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Largest and catalytic core component of RNA polymerase III which synthesizes small RNAs, such as 5S rRNA and tRNAs. Forms the polymerase active center together with the second largest subunit. A single-stranded DNA template strand of the promoter is positioned within the central active site cleft of Pol III. A bridging helix emanat [...] (1460 aa)
       
 
  0.755
RPO21
RNA polymerase II largest subunit B220, part of central core; phosphorylation of C-terminal heptapeptide repeat domain regulates association with transcription and splicing factors; similar to bacterial beta-prime; DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Largest and catalytic component of RNA polymerase II which synthesizes mRNA precursors and many functional non-coding RNAs. Forms the polymerase active center together with the second largest subunit. Pol II is the central component of the basal [...] (1733 aa)
       
 
  0.755
RPA135
RNA polymerase I second largest subunit A135; DNA-dependent RNA polymerases catalyze the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Component of RNA polymerase I (Pol I) which synthesizes ribosomal RNA precursors. Besides, RNA polymerase I has intrinsic RNA cleavage activity. RPA190 and RPA135 both contribute to the polymerase catalytic activity and together form the Pol I active center. In addition, subunit RPA12 contributes a catalytic zinc ribbon that is required for RNA cleavage by Pol I. A single stranded DNA template strand of the pro [...] (1203 aa)
       
 
  0.682
ENA1
P-type ATPase sodium pump, involved in Na+ and Li+ efflux to allow salt tolerance; This magnesium-dependent enzyme catalyzes the hydrolysis of ATP coupled with the transport of the sodium or lithium ions to allow salt tolerance. Is negatively modulated by SIS2/HAL3 (1091 aa)
       
 
  0.662
PSR1
Plasma membrane associated protein phosphatase involved in the general stress response; required along with binding partner Whi2p for full activation of STRE-mediated gene expression, possibly through dephosphorylation of Msn2p; Has phosphatase activity in vitro. Involved in the response to sodium and lithium ion stress (but not to potassium or sorbitol stress) by inducing transcription of the sodium pump ENA1/PMR2. Acts through a calcineurin-independent pathway and is functionally redundant with PSR2. Also involved in the general stress response; acts together with WHI2 to activate st [...] (427 aa)
       
 
0.639
RPA12
RNA polymerase I subunit A12.2; contains two zinc binding domains, and the N terminal domain is responsible for anchoring to the RNA pol I complex; DNA-dependent RNA polymerases catalyze the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Component of RNA polymerase I (Pol I) which synthesizes ribosomal RNA precursors. Besides, RNA polymerase I has intrinsic RNA cleavage activity. Proposed to contribute to the polymerase catalytic activity and form the polymerase active center together with the two largest subunits. Subunit RPA12 contributes a c [...] (125 aa)
     
 
  0.622
RPC25
RNA polymerase III subunit C25, required for transcription initiation; forms a heterodimer with Rpc17p; paralog of Rpb7p; DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Specific peripheric component of RNA polymerase III which synthesizes small RNAs, such as 5S rRNA and tRNA. The RPC25/RPC8-RPC17/RPC9 subcomplex may bind Pol III transcripts emerging from the adjacent exit pore during elongation (212 aa)
       
      0.616
RPB7
RNA polymerase II subunit B16; forms two subunit dissociable complex with Rpb4p; involved in recruitment of 3’-end processing factors to transcribing RNA polymerase II complex and in export of mRNA to cytoplasm under stress conditions; also involved /.../anslation initiation; DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Component of RNA polymerase II which synthesizes mRNA precursors and many functional non-coding RNAs. Pol II is the central component of the basal RNA polymerase II transcription mach [...] (171 aa)
       
      0.616
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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