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PUS1 protein (Saccharomyces cerevisiae) - STRING interaction network
"PUS1" - tRNA:pseudouridine synthase, introduces pseudouridines at positions 26-28, 34-36, 65, and 67 of tRNA in Saccharomyces cerevisiae
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Predicted Interactions
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protein homology
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PUS1tRNA-pseudouridine synthase, introduces pseudouridines at positions 26-28, 34-36, 65, and 67 of tRNA; nuclear protein that appears to be involved in tRNA export; also acts on U2 snRNA; Formation of pseudouridine at positions 27 and 28 in the anticodon stem and loop of transfer RNAs; at positions 34 and 36 of intron-containing precursor tRNA(Ile) and at position 35 in the intron-containing tRNA(Tyr) (544 aa)    
Predicted Functional Partners:
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)
     
  0.995
TRM82
Catalytic subunit of a tRNA methyltransferase complex; Trm8p and Trm82p comprise an enzyme that catalyzes a methyl-transfer from S-adenosyl-l-methionine to the N(7) atom of guanine at position 46 in tRNA; Trm8 lacks catalytic activity if not bound t /.../2p; Required for the formation of N(7)-methylguanine at position 46 (m7G46) in tRNA, a modification required to maintain stability of tRNAs; its absence resulting in tRNA decay. In the complex, it is required to stabilize and induce conformational changes of the catalytic subunit (444 aa)
     
 
  0.940
PUS9
Mitochondrial tRNA-pseudouridine synthase, catalyzes the formation of pseudouridine at position 32 in mitochondrial tRNAs; contains an N-terminal mitochondrial targeting sequence; Responsible for synthesis of pseudouridine from uracil- 32 in mitochondrial transfer RNAs (462 aa)
   
   
  0.937
PUS6
tRNA-pseudouridine synthase, catalyzes the conversion of uridine to pseudouridine at position 31 in cytoplasmic and mitochondrial tRNAs; mutation of Asp168 to Ala abolishes enzyme activity; not essential for viability; Catalyzes the formation of pseudouridine at position 31 in the psi GC loop of tRNAS (404 aa)
   
   
  0.930
PUS7
Pseudouridine synthase, catalyzes pseudouridylation at positions 35 and 56 in U2 snRNA, position 50 in 5S rRNA, position 13 in cytoplasmic tRNAs, and position 35 in pre-tRNA(Tyr); conserved in archaea, vertebrates, and some bacteria; Catalyzes pseudouridylation at position 35 in U2 snRNA stem-loop II region which induces particular conformation of the mRNA-U2 snRNA duplex and places the nucleophile in an accessible position for the first step of splicing. Catalyzes also pseudouridylation at position 50 in 5S rRNA, position 13 in cytoplasmic tRNAs, and position 35 in pre-tRNA(Tyr). Pseu [...] (676 aa)
     
   
  0.929
CBF5
Pseudouridine synthase catalytic subunit of box H/ACA small nucleolar ribonucleoprotein particles (snoRNPs), acts on both large and small rRNAs and on snRNA U2; mutations in human ortholog dyskerin cause the disorder dyskeratosis congenita; Plays a central role in ribosomal RNA processing. Probable catalytic subunit of H/ACA small nucleolar ribonucleoprotein (H/ACA snoRNP) complex, which catalyzes pseudouridylation of rRNA. This involves the isomerization of uridine such that the ribose is subsequently attached to C5, instead of the normal N1. Pseudouridine (’psi’) residues may serve t [...] (483 aa)
     
 
  0.926
TRM1
tRNA methyltransferase; two forms of the protein are made by alternative translation starts; localizes to both the nucleus and mitochondrion to produce the modified base N2,N2-dimethylguanosine in tRNAs in both compartments; Dimethylates a single guanine residue at position 26 of most tRNAs using S-adenosyl-L-methionine as donor of the methyl groups. Required for the modification of both mitochondrial and cytoplasmic tRNAs (570 aa)
     
 
  0.917
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)
     
 
  0.882
RPN1
Non-ATPase base subunit of the 19S regulatory particle of the 26S proteasome; may participate in the recognition of several ligands of the proteasome; contains a leucine-rich repeat (LRR) domain, a site for protein-protein interactions; Acts as a regulatory subunit of the 26S proteasome which is involved in the ATP-dependent degradation of ubiquitinated proteins (993 aa)
       
      0.880
PUS2
Mitochondrial tRNA-pseudouridine synthase; acts at positions 27 and 28, but not at position 72; efficiently and rapidly targeted to mitochondria, specifically dedicated to mitochondrial tRNA modification; Mitochondrial-specific pseudouridine synthase catalyzing the formation of pseudouridine at positions 27 and 28 in the anticodon stem and loop of mitochondrial transfer RNAs (370 aa)
       
 
0.878
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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