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Protein

Cytochrome c

Gene

CYCS

Organism
Oryctolagus cuniculus (Rabbit)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at protein leveli

Functioni

Electron carrier protein. The oxidized form of the cytochrome c heme group can accept an electron from the heme group of the cytochrome c1 subunit of cytochrome reductase. Cytochrome c then transfers this electron to the cytochrome oxidase complex, the final protein carrier in the mitochondrial electron-transport chain.
Plays a role in apoptosis. Suppression of the anti-apoptotic members or activation of the pro-apoptotic members of the Bcl-2 family leads to altered mitochondrial membrane permeability resulting in release of cytochrome c into the cytosol. Binding of cytochrome c to Apaf-1 triggers the activation of caspase-9, which then accelerates apoptosis by activating other caspases (By similarity).By similarity

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Binding sitei15 – 151Heme (covalent)PROSITE-ProRule annotation1 Publication
Binding sitei18 – 181Heme (covalent)PROSITE-ProRule annotation1 Publication
Metal bindingi19 – 191Iron (heme axial ligand)
Metal bindingi81 – 811Iron (heme axial ligand)

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Biological processi

Apoptosis, Electron transport, Respiratory chain, Transport

Keywords - Ligandi

Heme, Iron, Metal-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Cytochrome c
Gene namesi
Name:CYCS
Synonyms:CYC
OrganismiOryctolagus cuniculus (Rabbit)
Taxonomic identifieri9986 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresLagomorphaLeporidaeOryctolagus
Proteomesi
  • UP000001811 Componenti: Unplaced

Subcellular locationi

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Mitochondrion

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Initiator methionineiRemoved1 Publication
Chaini2 – 105104Cytochrome cPRO_0000108230Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Modified residuei2 – 21N-acetylglycine1 Publication
Modified residuei49 – 491PhosphotyrosineBy similarity
Modified residuei56 – 561N6-succinyllysineBy similarity
Modified residuei73 – 731N6-acetyllysine; alternateBy similarity
Modified residuei73 – 731N6-succinyllysine; alternateBy similarity
Modified residuei98 – 981PhosphotyrosineBy similarity
Modified residuei100 – 1001N6-acetyllysineBy similarity

Post-translational modificationi

Binds 1 heme group per subunit.
Phosphorylation at Tyr-49 and Tyr-98 both reduce by half the turnover in the reaction with cytochrome c oxidase, down-regulating mitochondrial respiration.By similarity

Keywords - PTMi

Acetylation, Phosphoprotein

Interactioni

Protein-protein interaction databases

STRINGi9986.ENSOCUP00000022793.

Structurei

3D structure databases

ProteinModelPortaliP00008.
SMRiP00008. Positions 2-105.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the cytochrome c family.Curated

Phylogenomic databases

eggNOGiKOG3453. Eukaryota.
COG3474. LUCA.
HOGENOMiHOG000009762.
HOVERGENiHBG003023.
InParanoidiP00008.

Family and domain databases

Gene3Di1.10.760.10. 1 hit.
InterProiIPR009056. Cyt_c-like_dom.
IPR002327. Cyt_c_1A/1B.
[Graphical view]
PANTHERiPTHR11961. PTHR11961. 1 hit.
PfamiPF00034. Cytochrom_C. 1 hit.
[Graphical view]
PRINTSiPR00604. CYTCHRMECIAB.
SUPFAMiSSF46626. SSF46626. 1 hit.
PROSITEiPS51007. CYTC. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

P00008-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MGDVEKGKKI FVQKCAQCHT VEKGGKHKTG PNLHGLFGRK TGQAVGFSYT
60 70 80 90 100
DANKNKGITW GEDTLMEYLE NPKKYIPGTK MIFAGIKKKD ERADLIAYLK

KATNE
Length:105
Mass (Da):11,692
Last modified:January 23, 2007 - v2
Checksum:i173CA779ABF30486
GO

Sequence databases

PIRiA00009. CCRB.

Cross-referencesi

Web resourcesi

Protein Spotlight

Life shuttle - Issue 76 of November 2006

Sequence databases

PIRiA00009. CCRB.

3D structure databases

ProteinModelPortaliP00008.
SMRiP00008. Positions 2-105.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi9986.ENSOCUP00000022793.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Phylogenomic databases

eggNOGiKOG3453. Eukaryota.
COG3474. LUCA.
HOGENOMiHOG000009762.
HOVERGENiHBG003023.
InParanoidiP00008.

Family and domain databases

Gene3Di1.10.760.10. 1 hit.
InterProiIPR009056. Cyt_c-like_dom.
IPR002327. Cyt_c_1A/1B.
[Graphical view]
PANTHERiPTHR11961. PTHR11961. 1 hit.
PfamiPF00034. Cytochrom_C. 1 hit.
[Graphical view]
PRINTSiPR00604. CYTCHRMECIAB.
SUPFAMiSSF46626. SSF46626. 1 hit.
PROSITEiPS51007. CYTC. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. "Rabbit heart cytochrome c."
    Needleman S.B., Margoliash E.
    J. Biol. Chem. 241:853-863(1966) [PubMed] [Europe PMC] [Abstract]
    Cited for: PROTEIN SEQUENCE OF 2-105, ACETYLATION AT GLY-2.

Entry informationi

Entry nameiCYC_RABIT
AccessioniPrimary (citable) accession number: P00008
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 21, 1986
Last sequence update: January 23, 2007
Last modified: February 17, 2016
This is version 113 of the entry and version 2 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Direct protein sequencing, Reference proteome

Documents

  1. Protein Spotlight
    Protein Spotlight articles and cited UniProtKB/Swiss-Prot entries
  2. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.