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COA1 protein (Saccharomyces cerevisiae) - STRING interaction network
"COA1" - Mitochondrial inner membrane protein required for assembly of the cytochrome c oxidase complex (complex IV) in Saccharomyces cerevisiae
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COA1Mitochondrial inner membrane protein required for assembly of the cytochrome c oxidase complex (complex IV); interacts with complex IV assembly factor Shy1p during the early stages of assembly; Required for efficient assembly of cytochrome c oxidase in the mitochondrial inner membrane. Involved in a step coupling MSS51-dependent cotranslational insertion of COX1 to the addition of its heme A and copper B cofactors (197 aa)    
Predicted Functional Partners:
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)
     
 
  0.899
SHY1
Mitochondrial 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)
       
 
  0.830
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)
       
 
  0.771
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)
     
 
  0.738
COX14
Mitochondrial membrane protein, involved in translational regulation of Cox1p and assembly of cytochrome c oxidase (complex IV); associates with complex IV assembly intermediates and complex III/complex IV supercomplexes; Required for the synthesis of yeast cytochrome oxidase (70 aa)
     
 
  0.677
COA3
Mitochondrial inner membrane protein that participates in regulation of COX1 translation, Cox1p stabilization, and cytochrome oxidase assembly; Required for assembly of cytochrome c oxidase (complex IV). With COX14, regulates negatively COX1 translation and is involved in MSS51 association with newly synthesized COX1 (85 aa)
     
      0.649
POR1
Mitochondrial porin (voltage-dependent anion channel), outer membrane protein required for the maintenance of mitochondrial osmotic stability and mitochondrial membrane permeability; phosphorylated; Forms a channel through the cell membrane that allows diffusion of small hydrophilic molecules. The channel adopts an open conformation at low or zero membrane potential and a closed conformation at potentials above 30-40 mV. The open state has a weak anion selectivity whereas the closed state is cation- selective. Is the major permeability factor of the mitochondrial outer membrane (283 aa)
       
 
  0.588
CYB2
Cytochrome b2 (L-lactate cytochrome-c oxidoreductase), component of the mitochondrial intermembrane space, required for lactate utilization; expression is repressed by glucose and anaerobic conditions (591 aa)
       
 
  0.568
MDJ1
Co-chaperone that stimulates HSP70 protein Ssc1p ATPase activity; involved in protein folding/refolding in the mitochodrial matrix; required for proteolysis of misfolded proteins; member of the HSP40 (DnaJ) family of chaperones; Plays a role in mitochondrial biogenesis and protein folding (511 aa)
       
 
  0.523
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)
       
 
  0.500
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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