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SHY1 protein (Saccharomyces cerevisiae) - STRING interaction network
"SHY1" - Mitochondrial inner membrane protein required for assembly of cytochrome c oxidase (complex IV) in Saccharomyces cerevisiae
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SHY1Mitochondrial inner membrane protein required for assembly of cytochrome c oxidase (complex IV); associates with complex IV assembly intermediates and complex III/complex IV supercomplexes; similar to human SURF1 involved in Leigh Syndrome; Required for efficient assembly of cytochrome c oxidase in the mitochondrial inner membrane. Involved in a step that couples MSS51-COX14-dependent regulation of COX1 translation to early steps of cytochrome c oxidase assembly (389 aa)    
Predicted Functional Partners:
COX15
Protein required for the hydroxylation of heme O to form heme A, which is an essential prosthetic group for cytochrome c oxidase; Required for the assembly of yeast cytochrome oxidase. Involved in the biosynthesis of heme A and the initial step in this pathway, the hydroxylation of heme O, is thought to be catalyzed by a three-component mono-oxygenase consisting of COX15, ferredoxin and ferredoxin reductase (486 aa)
   
 
  0.990
COX10
Heme A-farnesyltransferase, catalyzes the first step in the conversion of protoheme to the heme A prosthetic group required for cytochrome c oxidase activity; human ortholog is associated with mitochondrial disorders; Converts protoheme IX and farnesyl diphosphate to heme O (462 aa)
   
 
  0.976
COX11
Protein required for delivery of copper to Cox1p; mitochondrial inner membrane protein; association with mitochondrial ribosomes suggests that copper delivery may occur during translation of Cox1p; Exerts its effect at some terminal stage of cytochrome c oxidase synthesis, probably by being involved in the insertion of the copper B into subunit I (300 aa)
   
 
  0.964
MSS51
Specific translational activator for the mitochondrial COX1 mRNA; loosely associated with the matrix face of the mitochondrial inner membrane; influences both COX1 mRNA translation and Cox1p assembly into cytochrome c oxidase; Has a dual role in the assembly of cytochrome oxidase subunit 1 (COX1). It has a regulative function on COX1 synthesis, acting as a translational activator specific for the COX1 mRNA, and it also binds to newly synthesized COX1 protein. Together with COX14, may act as a chaperone that binds efficiently unassembled COX1 and prevents it from unproductive aggregatio [...] (436 aa)
       
 
  0.939
COA2
Cytochrome oxidase assembly factor; null mutation results in respiratory deficiency with specific loss of cytochrome oxidase activity; functions downstream of assembly factors Mss51p and Coa1p and interacts with assembly factor Shy1p; Required for efficient assembly of cytochrome c oxidase in the mitochondrial inner membrane. Seems to be involved in the SHY1-mediated step of cytochrome c oxidase maturation. May aid in stabilizing an early COX1 intermediate containing the nuclear subunits COX5A and COX6 (68 aa)
       
 
  0.929
SCO1
Copper-binding protein of the mitochondrial inner membrane, required for cytochrome c oxidase activity and respiration; may function to deliver copper to cytochrome c oxidase; has similarity to thioredoxins; Required for the accumulation of subunits 1 and 2 of cytochrome c oxidase complex. Thought to play a role in either mitochondrial copper transport or insertion of copper into the active site of COX (295 aa)
   
   
  0.916
CYT1
Cytochrome c1, component of the mitochondrial respiratory chain; expression is regulated by the heme-activated, glucose-repressed Hap2p/3p/4p/5p CCAAT-binding complex; Heme-containing component of the ubiquinol-cytochrome c reductase complex (complex III or cytochrome b-c1 complex), which is part of the mitochondrial respiratory chain that generates an electrochemical potential coupled to ATP synthesis. The complex couples electron transfer from ubiquinol to cytochrome c (309 aa)
     
 
  0.912
COR1
Core subunit of the ubiquinol-cytochrome c reductase complex (bc1 complex), which is a component of the mitochondrial inner membrane electron transport chain; Component of the ubiquinol-cytochrome c reductase complex (complex III or cytochrome b-c1 complex), which is part of the mitochondrial respiratory chain that generates an electrochemical potential coupled to ATP synthesis. The complex couples electron transfer from ubiquinol to cytochrome c. COR1 may mediate formation of the complex between cytochromes c and c1 (457 aa)
     
 
  0.912
SCO2
Protein anchored to the mitochondrial inner membrane, similar to Sco1p and may have a redundant function with Sco1p in delivery of copper to cytochrome c oxidase; interacts with Cox2p; Acts as a copper chaperone, transporting copper to the Cu(A) site on the cytochrome c oxidase subunit II (COX2) (301 aa)
   
   
  0.893
COX1
Subunit I of cytochrome c oxidase, which is the terminal member of the mitochondrial inner membrane electron transport chain; one of three mitochondrially-encoded subunits; Cytochrome c oxidase is the component of the respiratory chain that catalyzes the reduction of oxygen to water. Subunits 1- 3 form the functional core of the enzyme complex. CO I is the catalytic subunit of the enzyme. Electrons originating in cytochrome c are transferred via the copper A center of subunit 2 and heme A of subunit 1 to the bimetallic center formed by heme A3 and copper B (534 aa)
   
 
  0.886
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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