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TRL1 protein (Saccharomyces cerevisiae) - STRING interaction network
"TRL1" - tRNA ligase, required for tRNA splicing and for both splicing and translation of HAC1 mRNA in the UPR in Saccharomyces cerevisiae
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Predicted Interactions
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TRL1tRNA ligase, required for tRNA splicing and for both splicing and translation of HAC1 mRNA in the UPR; has phosphodiesterase, polynucleotide kinase, and ligase activities; localized at the inner nuclear envelope and partially to polysomes; One of the two proteins required for the splicing of precursor tRNA molecules containing introns. The ligation activity requires three enzymatic activities- phosphorylation of the 5’ terminus of the 3’ half-tRNA in the presence of ATP, opening of the 2’3’-cyclic phosphodiester bond of the 5’ half-tRNA leaving a 2’-phosphomonoester and ligation of the [...] (827 aa)    
Predicted Functional Partners:
HAC1
Basic leucine zipper (bZIP) transcription factor (ATF/CREB1 homolog) that regulates the unfolded protein response, via UPRE binding, and membrane biogenesis; ER stress-induced splicing pathway facilitates efficient Hac1p synthesis; Transcriptional activator involved in the unfolded protein response (UPR) pathway. Recognizes and binds to the UPR element (UPRE) in the promoter of UPR-regulated genes such as KAR2, PDI1, EUG1 and FKB2. Increases the synthesis of endoplasmic reticulum-resident proteins required for protein folding as well as components of the secretory pathway (238 aa)
           
  0.934
IRE1
Serine-threonine kinase and endoribonuclease; transmembrane protein that mediates the unfolded protein response (UPR) by regulating Hac1p synthesis through HAC1 mRNA splicing; Kar2p binds inactive Ire1p and releases from it upon ER stress; Senses unfolded proteins in the lumen of the endoplasmic reticulum via its N-terminal domain which leads to enzyme auto- activation. The active endoribonuclease domain splices HAC1 precursor mRNA to produce the mature form which then induces transcription of UPR target genes (1115 aa)
     
   
  0.896
SEN34
Subunit of the tRNA splicing endonuclease, which is composed of Sen2p, Sen15p, Sen34p, and Sen54p; Sen34p contains the active site for tRNA 3’ splice site cleavage and has similarity to Sen2p and to Archaeal tRNA splicing endonuclease; Constitutes one of the two catalytic subunit of the tRNA-splicing endonuclease complex, a complex responsible for identification and cleavage of the splice sites in pre-tRNA. It cleaves pre-tRNA at the 5’- and 3’-splice sites to release the intron. The products are an intron and two tRNA half-molecules bearing 2’,3’-cyclic phosphate and 5’-OH termini. Th [...] (275 aa)
     
   
  0.835
SEN2
Subunit of the tRNA splicing endonuclease, which is composed of Sen2p, Sen15p, Sen34p, and Sen54p; Sen2p contains the active site for tRNA 5’ splice site cleavage and has similarity to Sen34p and to Archaeal tRNA splicing endonuclease; Constitutes one of the two catalytic subunit of the tRNA-splicing endonuclease complex, a complex responsible for identification and cleavage of the splice sites in pre-tRNA. It cleaves pre-tRNA at the 5’- and 3’-splice sites to release the intron. The products are an intron and two tRNA half-molecules bearing 2’,3’-cyclic phosphate and 5’-OH termini. Th [...] (377 aa)
           
  0.830
SEN54
Subunit of the tRNA splicing endonuclease, which is composed of Sen2p, Sen15p, Sen34p, and Sen54p; Non-catalytic subunit of the tRNA-splicing endonuclease complex, a complex responsible for identification and cleavage of the splice sites in pre-tRNA. It cleaves pre-tRNA at the 5’ and 3’ splice sites to release the intron. The products are an intron and two tRNA half-molecules bearing 2’,3’ cyclic phosphate and 5’-OH termini. There are no conserved sequences at the splice sites, but the intron is invariably located at the same site in the gene, placing the splice sites an invariant dist [...] (467 aa)
           
  0.829
SEN15
Subunit of the tRNA splicing endonuclease, which is composed of Sen2p, Sen15p, Sen34p, and Sen54p; Non-catalytic subunit of the tRNA-splicing endonuclease complex, a complex responsible for identification and cleavage of the splice sites in pre-tRNA. It cleaves pre-tRNA at the 5’ and 3’ splice sites to release the intron. The products are an intron and two tRNA half-molecules bearing 2’,3’ cyclic phosphate and 5’-OH termini. There are no conserved sequences at the splice sites, but the intron is invariably located at the same site in the gene, placing the splice sites an invariant dist [...] (128 aa)
           
  0.829
SLX1
Subunit of a complex, with Slx4p, that hydrolyzes 5’ branches from duplex DNA in response to stalled or converging replication forks; function overlaps with that of Sgs1p-Top3p; Catalytic subunit of the SLX1-SLX4 structure-specific endonuclease that resolves DNA secondary structures generated during DNA repair and recombination. Has endonuclease activity towards branched DNA substrates, introducing single-strand cuts in duplex DNA close to junctions with ss-DNA. Has a preference for simple Y, 5’-flap and replication fork-like structures. It cleaves the strand bearing the 5’-non-homolog [...] (304 aa)
           
  0.829
TPT1
tRNA 2’-phosphotransferase that catalyzes final step in tRNA splicing- the transfer of the 2’-PO(4) from the splice junction to NAD(+) to form ADP-ribose 1’’-2’’cyclic phosphate and nicotinamide; Catalyzes the last step of tRNA splicing, the transfer of the splice junction 2’-phosphate from ligated tRNA to NAD to produce ADP-ribose 1’’-2’’ cyclic phosphate (230 aa)
           
  0.826
KAR2
ATPase involved in protein import into the ER, also acts as a chaperone to mediate protein folding in the ER and may play a role in ER export of soluble proteins; regulates the unfolded protein response via interaction with Ire1p; Probably plays a role in facilitating the assembly of multimeric protein complexes inside the ER. Is required for secretory polypeptide translocation. May physically associate with SEC63 protein in the endoplasmic reticulum and this interaction may be regulated by ATP hydrolysis (682 aa)
           
  0.726
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)
     
   
  0.581
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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