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CAT5 protein (Saccharomyces cerevisiae) - STRING interaction network
"CAT5" - Protein required for ubiquinone (Coenzyme Q) biosynthesis in Saccharomyces cerevisiae
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Predicted Interactions
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textmining
co-expression
protein homology
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CAT5Protein required for ubiquinone (Coenzyme Q) biosynthesis; localizes to the matrix face of the mitochondrial inner membrane in a large complex with ubiquinone biosynthetic enzymes; required for gluconeogenic gene activation; Catalyzes the hydroxylation of 2-hexaprenyl-3-methyl-6- methoxy-1,4-benzoquinol (DMQH2) during ubiquinone biosynthesis (PubMed-8621692, PubMed-9452453, PubMed-16624818). Has also a structural role in the COQ enzyme complex, stabilizing COQ3 and COQ4 polypeptides (PubMed-16624818) (233 aa)    
Predicted Functional Partners:
COQ3
O-methyltransferase, catalyzes two different O-methylation steps in ubiquinone (Coenzyme Q) biosynthesis; component of a mitochondrial ubiquinone-synthesizing complex; phosphoprotein; O-methyltransferase that catalyzes the 2 O-methylation steps in the ubiquinone biosynthetic pathway. Catalyzes the methylation of 3,4-dihydroxy-5-hexaprenylbenzoate (DHHB) to 3- methoxy-4-hydroxy-5-hexaprenylbenzoate (HMHB) and the methylation of 2-hexaprenyl-3-methyl-5-hydroxy-6-methoxy-1,4-benzoquinol (3- demethylubiquinol-6) to ubiquinol-6 (312 aa)
     
  0.998
COQ5
2-hexaprenyl-6-methoxy-1,4-benzoquinone methyltransferase, involved in ubiquinone (Coenzyme Q) biosynthesis; localizes to the matrix face of the mitochondrial inner membrane in a large complex with other ubiquinone biosynthetic enzymes; Methyltransferase required for the conversion of 2- polyprenyl-6-methoxy-1,4-benzoquinol (DDMQH2) to 2-polyprenyl-3- methyl-6-methoxy-1,4-benzoquinol (DMQH2) (307 aa)
     
  0.996
COQ8
Protein required for ubiquinone (coenzyme Q) biosynthesis and for respiratory growth; exhibits genetic interaction with COQ9, suggesting a common function; similar to prokaryotic proteins involved in early steps of ubiquinone biosynthesis; Atypical kinase involved in the biosynthesis of coenzyme Q, also named ubiquinone, an essential lipid-soluble electron transporter for aerobic cellular respiration. Affects the molecular organization and function of COQ3, possibly through kinase activity towards COQ3, COQ5 and/or COQ7 (PubMed-11279158, PubMed-15063807, PubMed-1648478, PubMed-18801050 [...] (501 aa)
       
 
  0.989
COQ9
Protein required for ubiquinone (coenzyme Q) biosynthesis and respiratory growth; localizes to the matrix face of the mitochondrial inner membrane in a large complex with ubiquinone biosynthetic enzymes; Lipid-binding protein involved in the biosynthesis of coenzyme Q, also named ubiquinone, an essential lipid-soluble electron transporter for aerobic cellular respiration (260 aa)
       
 
  0.989
COQ4
Protein with a role in ubiquinone (Coenzyme Q) biosynthesis, possibly functioning in stabilization of Coq7p; located on the matrix face of the mitochondrial inner membrane; component of a mitochondrial ubiquinone-synthesizing complex; Component of the coenzyme Q biosynthetic pathway. May play a role in organizing a multi-subunit COQ enzyme complex required for coenzyme Q biosynthesis. Required for steady-state levels of COQ3, COQ4, COQ6, COQ7 and COQ9 polypeptides (335 aa)
       
 
  0.984
COQ6
Putative flavin-dependent monooxygenase; involved in ubiquinone (Coenzyme Q) biosynthesis; localizes to the matrix face of the mitochondrial inner membrane in a large complex with other ubiquinone biosynthetic enzymes; human COX6 can rescue a yeast /.../utant and is implicated in steroid-resistant nephrotic syndrome (SRNS); FAD-dependent monooxygenase required for the C5-ring hydroxylation during ubiquinone biosynthesis. Catalyzes the hydroxylation of 3-hexaprenyl-4-hydroxybenzoic acid (HHB) to 3- hexaprenyl-4,5-dihydroxybenzoic acid (DHHB). The electrons required for the hydroxylatio [...] (479 aa)
     
 
  0.942
COQ2
Para hydroxybenzoate- polyprenyl transferase, catalyzes the second step in ubiquinone (coenzyme Q) biosynthesis; Catalyzes the prenylation of para-hydroxybenzoate (PHB) with an all-trans polyprenyl group. Mediates the second step in the final reaction sequence of coenzyme Q (CoQ) biosynthesis, which is the condensation of the polyisoprenoid side chain with PHB, generating the first membrane-bound Q intermediate (372 aa)
     
   
  0.931
COQ10
Coenzyme Q (ubiquinone) binding protein, functions in the delivery of Q<sub>6</sub> to its proper location for electron transport during respiration; START domain protein with homologs in bacteria and eukaryotes; Required for the function of coenzyme Q in the respiratory chain. May serve as a chaperone or may be involved in the transport of Q6 from its site of synthesis to the catalytic sites of the respiratory complexes (207 aa)
     
 
  0.924
COQ1
Hexaprenyl pyrophosphate synthetase, catalyzes the first step in ubiquinone (coenzyme Q) biosynthesis; Assembly of polyisoprenoid side chains. The polyprenyl synthase of coenzyme Q biosynthesis catalyzes the formation from isopentenyl diphosphate of all trans-polyprenyl pyrophosphates generally ranging in length of between 6 and 10 isoprene units depending on the species (473 aa)
           
  0.869
MAS2
Alpha subunit of the mitochondrial processing protease (MPP); essential processing enzyme that cleaves the N-terminal targeting sequences from mitochondrially imported proteins; Cleaves presequences (transit peptides) from mitochondrial protein precursors. The cleavage sites typically contain an arginine at position -2 (in the N-terminal portion) from the scissible peptide bond in addition to other distal basic residues, and an aromatic residue at position +1 (482 aa)
       
 
  0.547
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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