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Protein

Cytochrome c

Gene

CYCS

Organism
Saimiri sciureus (Common squirrel monkey)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

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 (By similarity).By similarity
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)DescriptionActionsGraphical viewLength
Binding sitei15Heme (covalent)PROSITE-ProRule annotation1
Binding sitei18Heme (covalent)PROSITE-ProRule annotation1
Metal bindingi19Iron (heme axial ligand)PROSITE-ProRule annotation1
Metal bindingi81Iron (heme axial ligand)PROSITE-ProRule annotation1

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
OrganismiSaimiri sciureus (Common squirrel monkey)
Taxonomic identifieri9521 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniPlatyrrhiniCebidaeSaimiriinaeSaimiri

Subcellular locationi

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Mitochondrion

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Initiator methionineiRemovedBy similarity
ChainiPRO_00001082332 – 105Cytochrome cAdd BLAST104

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei2N-acetylglycineBy similarity1
Modified residuei49PhosphotyrosineBy similarity1
Modified residuei56N6-succinyllysineBy similarity1
Modified residuei73N6-acetyllysine; alternateBy similarity1
Modified residuei73N6-succinyllysine; alternateBy similarity1
Modified residuei98PhosphotyrosineBy similarity1
Modified residuei100N6-acetyllysineBy similarity1

Post-translational modificationi

Binds 1 heme group per subunit.By similarity
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

Structurei

3D structure databases

ProteinModelPortaliQ52V10.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the cytochrome c family.Curated

Phylogenomic databases

HOVERGENiHBG003023.

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.

Q52V10-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MGDVEKGKRI FIQKCSQCHT VEKGGKHKTG PNLHGLFGRK TGQAAGFTYT
60 70 80 90 100
EANKNKGIIW GEDTLMEYLE NPKKYIPGTK MIFVGIKKKG EREDLIAYLK

KATNE
Length:105
Mass (Da):11,790
Last modified:January 23, 2007 - v3
Checksum:iA0BF06836BE50192
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AY918493 Genomic DNA. Translation: AAY17032.1.

Cross-referencesi

Web resourcesi

Protein Spotlight

Life shuttle - Issue 76 of November 2006

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AY918493 Genomic DNA. Translation: AAY17032.1.

3D structure databases

ProteinModelPortaliQ52V10.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Phylogenomic databases

HOVERGENiHBG003023.

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...

Entry informationi

Entry nameiCYC_SAISC
AccessioniPrimary (citable) accession number: Q52V10
Entry historyi
Integrated into UniProtKB/Swiss-Prot: December 6, 2005
Last sequence update: January 23, 2007
Last modified: October 5, 2016
This is version 65 of the entry and version 3 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

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.