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RIT1 protein (Saccharomyces cerevisiae) - STRING interaction network
"RIT1" - 2'-O-ribosyl phosphate transferase, modifies the initiator methionine tRNA at position 64 to distinguish it from elongator methionine tRNA in Saccharomyces cerevisiae
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Known Interactions
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experimentally determined
Predicted Interactions
gene neighborhood
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textmining
co-expression
protein homology
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RIT12’-O-ribosyl phosphate transferase, modifies the initiator methionine tRNA at position 64 to distinguish it from elongator methionine tRNA; tRNA backbone modifying enzyme that mediates initiator/ elongator tRNA discrimination. This enzyme modifies exclusively the initiator tRNA in position 64 using 5’-phosphoribosyl-1’- pyrophosphate as the modification donor. Recognize the stem-loop IV region that is unique in eukaryotic cytoplasmic initiator tRNAs (513 aa)    
Predicted Functional Partners:
LOS1
Nuclear pore protein involved in nuclear export of pre-tRNA and in re-export of mature tRNAs after their retrograde import from the cytoplasm; tRNA nucleus export receptor which facilitates tRNA translocation across the nuclear pore complex. Preferentially interacts with tRNAs with mature 5’- and 3’-termini and does not distinguish between intron-containing and spliced tRNAs. In the nucleus binds to tRNA and to the Ran-GTPases GSP1 or GSP2 in their active GTP-bound form. Docking of this trimeric complex to the nuclear pore complex (NPC) is mediated through binding to nucleoporins. Upon [...] (1100 aa)
     
 
  0.793
TRM3
2’-O-ribose methyltransferase, catalyzes the ribose methylation of the guanosine nucleotide at position 18 of tRNAs; S-adenosyl-L-methionine-dependent 2’-O-ribose methyltransferase that catalyzes the formation of 2’-O- methylguanosine at position 18 (Gm18) in various tRNAs (1436 aa)
           
  0.738
IWR1
RNA polymerase II transport factor, conserved from yeast to humans; involved in both basal and regulated transcription from RNA polymerase II (RNAP II) promoters, but not itself a transcription factor; interacts with most of the RNAP II subunits; nu /.../ytoplasmic shuttling protein; deletion causes hypersensitivity to K1 killer toxin; Directs RNA polymerase II nuclear import. Binds RNA polymerase II in the active center cleft between the two largest subunits in the cytoplasm. Then uses an N-terminal bipartite nuclear localization signal that may be recognized by karyopherin alpha to d [...] (353 aa)
       
 
  0.732
PUS4
Pseudouridine synthase, catalyzes only the formation of pseudouridine-55 (Psi55), a highly conserved tRNA modification, in mitochondrial and cytoplasmic tRNAs; PUS4 overexpression leads to translational derepression of GCN4 (Gcd- phenotype); Responsible for synthesis of pseudouridine from uracil- 55 in the psi GC loop of transfer RNAs (403 aa)
           
  0.678
TEF1
Translational elongation factor EF-1 alpha; also encoded by TEF2; functions in the binding reaction of aminoacyl-tRNA (AA-tRNA) to ribosomes; may also have a role in tRNA re-export from the nucleus; GTP-binding component of the eukaryotic elongation factor 1 complex (eEF1). In its active GTP-bound form, binds to and delivers aminoacyl-tRNA to the A-site of ribosomes during protein biosynthesis. In the presence of a correct codon-anticodon match between the aminoacyl-tRNA and the A-site codon of the ribosome-bound mRNA, the ribosome acts as a GTPase activator and the GTP is hydrolyzed. [...] (458 aa)
       
 
  0.636
GCD10
Subunit of tRNA (1-methyladenosine) methyltransferase with Gcd14p, required for the modification of the adenine at position 58 in tRNAs, especially tRNAi-Met; first identified as a negative regulator of GCN4 expression; Substrate-binding subunit of tRNA (adenine-N(1)-)- methyltransferase, which catalyzes the formation of N(1)- methyladenine at position 58 (m1A58) in initiator methionyl-tRNA. Binds RNA. Also required for repression of GCN4 mRNA translation by the upstream open reading frames (uORFs) under conditions of amino acid sufficiency (478 aa)
       
 
  0.634
SUI3
Beta subunit of the translation initiation factor eIF2, involved in the identification of the start codon; proposed to be involved in mRNA binding; eIF-2 functions in the early steps of protein synthesis by forming a ternary complex with GTP and initiator tRNA. This complex binds to a 40S ribosomal subunit, followed by mRNA binding to form a 43S preinitiation complex. Junction of the 60S ribosomal subunit to form the 80S initiation complex is preceded by hydrolysis of the GTP bound to eIF-2 and release of an eIF-2-GDP binary complex. In order for eIF-2 to recycle and catalyze another r [...] (285 aa)
       
      0.621
SUI2
Alpha subunit of the translation initiation factor eIF2, involved in the identification of the start codon; phosphorylation of Ser51 is required for regulation of translation by inhibiting the exchange of GDP for GTP; eIF-2 functions in the early steps of protein synthesis by forming a ternary complex with GTP and initiator tRNA. This complex binds to a 40S ribosomal subunit, followed by mRNA binding to form a 43S preinitiation complex. Junction of the 60S ribosomal subunit to form the 80S initiation complex is preceded by hydrolysis of the GTP bound to eIF-2 and release of an eIF-2-GD [...] (304 aa)
       
      0.621
GCD11
Gamma subunit of the translation initiation factor eIF2, involved in the identification of the start codon; binds GTP when forming the ternary complex with GTP and tRNAi-Met; eIF-2 functions in the early steps of protein synthesis by forming a ternary complex with GTP and initiator tRNA. This complex binds to a 40S ribosomal subunit, followed by mRNA binding to form a 43S preinitiation complex. Junction of the 60S ribosomal subunit to form the 80S initiation complex is preceded by hydrolysis of the GTP bound to eIF-2 and release of an eIF-2-GDP binary complex. In order for eIF-2 to rec [...] (527 aa)
       
      0.621
TRM2
tRNA methyltransferase, 5-methylates the uridine residue at position 54 of tRNAs and may also have a role in tRNA stabilization or maturation; endo-exonuclease with a role in DNA repair; Catalyzes the formation of 5-methyl-uridine at position 54 (m5U54) in all tRNA. May also have a role in tRNA stabilization or maturation (639 aa)
     
   
  0.589
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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