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COQ8 protein (Saccharomyces cerevisiae) - STRING interaction network
"COQ8" - Protein required for ubiquinone (coenzyme Q) biosynthesis and for respiratory growth in Saccharomyces cerevisiae
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Predicted Interactions
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textmining
co-expression
protein homology
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COQ8Protein 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)    
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)
     
  0.996
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)
   
 
  0.991
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)
     
 
  0.990
CAT5
Protein 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)
       
 
  0.989
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)
     
 
  0.986
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)
       
 
  0.982
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)
     
 
  0.972
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)
     
   
  0.953
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)
         
  0.950
FDC1
Putative phenylacrylic acid decarboxylase; essential for the decarboxylation of aromatic carboxylic acids to the corresponding vinyl derivatives; homolog of E. coli UbiD; GFP-fusion protein localizes to the cytoplasm; Catalyzes the reversible decarboxylation of aromatic carboxylic acids like ferulic acid, p-coumaric acid or cinnamic acid, producing the corresponding vinyl derivatives 4-vinylphenol, 4-vinylguaiacol, and styrene, respectively, which play the role of aroma metabolites (PubMed-20471595, PubMed-25647642). Not essential for ubiquinone synthesis (PubMed-20471595) (503 aa)
       
  0.688
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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