Cytochrome c

CYCS
Available structures
PDB	Ortholog search: PDBe RCSB
List of PDB id codes
	1J3S, 3NWV, 3ZCF, 3ZOO, 2N9J, 2N9I
Identifiers
Aliases	CYCS, CYC, HCS, THC4, cytochrome c, somatic, Cytochrome c, cyt c
External IDs	OMIM: 123970 MGI: 88578 HomoloGene: 133055 GeneCards: CYCS
Gene location (Human)
Chr.	Chromosome 7 (human)
End	25,125,260 bp
Gene location (Mouse)
Chr.	Chromosome 6 (mouse)
End	50,543,518 bp
RNA expression pattern
	Top expressed in
	rectum; ; gastrocnemius muscle; ; prefrontal cortex; ; left ventricle; ; Brodmann area 9; ; cingulate gyrus; ; smooth muscle tissue; ; appendix; ; islet of Langerhans; ; ganglionic eminence;
	Top expressed in
	esophagus; ; yolk sac; ; morula; ; superior frontal gyrus; ; lip; ; inner renal medulla; ; proximal tubule; ; neural tube; ; stomach; ; cerebellar cortex;
	More reference expression data
	More reference expression data
Gene ontology
Molecular function	protein serine/threonine phosphatase activity; metal ion binding; protein binding; heme binding; electron transfer activity;
Cellular component	cytosol; protein phosphatase type 2A complex; mitochondrion; mitochondrial inner membrane; respirasome; nucleus; mitochondrial intermembrane space;
Biological process	mitochondrion organization; intrinsic apoptotic signaling pathway; activation of cysteine-type endopeptidase activity involved in apoptotic process by cytochrome c; cellular respiration; protein dephosphorylation; mitochondrial electron transport, cytochrome c to oxygen; apoptotic process; mitochondrial electron transport, ubiquinol to cytochrome c; cellular response to oxidative stress;
	Sources:Amigo / QuickGO
Orthologs
	54205
	13063
	ENSG00000172115
	ENSMUSG00000063694
	P99999
	P62897
	NM_018947
	NM_007808
	NP_061820
	NP_031834
	Wikidata
View/Edit Human	View/Edit Mouse

The cytochrome complex, or cyt c, is a small hemeprotein found loosely associated with the inner membrane of the mitochondrion where it plays a critical role in cellular respiration. It transfers electrons between Complexes III (Coenzyme Q – Cyt c reductase) and IV (Cyt c oxidase). Cytochrome c is highly water-soluble, unlike other cytochromes. It is capable of undergoing oxidation and reduction as its iron atom converts between the ferrous and ferric forms, but does not bind oxygen. It also plays a major role in cell apoptosis. In humans, cytochrome c is encoded by the CYCS gene.

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