CYC_SAISC
ID CYC_SAISC Reviewed; 105 AA.
AC Q52V10;
DT 06-DEC-2005, integrated into UniProtKB/Swiss-Prot.
DT 23-JAN-2007, sequence version 3.
DT 03-AUG-2022, entry version 76.
DE RecName: Full=Cytochrome c;
GN Name=CYCS;
OS Saimiri sciureus (Common squirrel monkey).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC Eutheria; Euarchontoglires; Primates; Haplorrhini; Platyrrhini; Cebidae;
OC Saimiriinae; Saimiri.
OX NCBI_TaxID=9521;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=15851671; DOI=10.1073/pnas.0409714102;
RA Schmidt T.R., Wildman D.E., Uddin M., Opazo J.C., Goodman M.,
RA Grossman L.I.;
RT "Rapid electrostatic evolution at the binding site for cytochrome c on
RT cytochrome c oxidase in anthropoid primates.";
RL Proc. Natl. Acad. Sci. U.S.A. 102:6379-6384(2005).
CC -!- FUNCTION: Electron carrier protein. The oxidized form of the cytochrome
CC c heme group can accept an electron from the heme group of the
CC cytochrome c1 subunit of cytochrome reductase. Cytochrome c then
CC transfers this electron to the cytochrome oxidase complex, the final
CC protein carrier in the mitochondrial electron-transport chain (By
CC similarity). {ECO:0000250}.
CC -!- FUNCTION: Plays a role in apoptosis. Suppression of the anti-apoptotic
CC members or activation of the pro-apoptotic members of the Bcl-2 family
CC leads to altered mitochondrial membrane permeability resulting in
CC release of cytochrome c into the cytosol. Binding of cytochrome c to
CC Apaf-1 triggers the activation of caspase-9, which then accelerates
CC apoptosis by activating other caspases (By similarity). {ECO:0000250}.
CC -!- SUBCELLULAR LOCATION: Mitochondrion intermembrane space {ECO:0000250}.
CC Note=Loosely associated with the inner membrane. {ECO:0000250}.
CC -!- PTM: Binds 1 heme c group covalently per subunit. {ECO:0000250}.
CC -!- PTM: Phosphorylation at Tyr-49 and Tyr-98 both reduce by half the
CC turnover in the reaction with cytochrome c oxidase, down-regulating
CC mitochondrial respiration. {ECO:0000250}.
CC -!- SIMILARITY: Belongs to the cytochrome c family. {ECO:0000305}.
CC -!- WEB RESOURCE: Name=Protein Spotlight; Note=Life shuttle - Issue 76 of
CC November 2006;
CC URL="https://web.expasy.org/spotlight/back_issues/076";
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DR EMBL; AY918493; AAY17032.1; -; Genomic_DNA.
DR AlphaFoldDB; Q52V10; -.
DR SMR; Q52V10; -.
DR GO; GO:0005758; C:mitochondrial intermembrane space; IEA:UniProtKB-SubCell.
DR GO; GO:0070469; C:respirasome; IEA:UniProtKB-KW.
DR GO; GO:0009055; F:electron transfer activity; IEA:InterPro.
DR GO; GO:0020037; F:heme binding; IEA:InterPro.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0006915; P:apoptotic process; IEA:UniProtKB-KW.
DR Gene3D; 1.10.760.10; -; 1.
DR InterPro; IPR009056; Cyt_c-like_dom.
DR InterPro; IPR036909; Cyt_c-like_dom_sf.
DR InterPro; IPR002327; Cyt_c_1A/1B.
DR PANTHER; PTHR11961; PTHR11961; 1.
DR Pfam; PF00034; Cytochrom_C; 1.
DR PRINTS; PR00604; CYTCHRMECIAB.
DR SUPFAM; SSF46626; SSF46626; 1.
DR PROSITE; PS51007; CYTC; 1.
PE 3: Inferred from homology;
KW Acetylation; Apoptosis; Electron transport; Heme; Iron; Metal-binding;
KW Mitochondrion; Phosphoprotein; Respiratory chain; Transport.
FT INIT_MET 1
FT /note="Removed"
FT /evidence="ECO:0000250|UniProtKB:P62894"
FT CHAIN 2..105
FT /note="Cytochrome c"
FT /id="PRO_0000108233"
FT BINDING 15
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /note="covalent"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00433"
FT BINDING 18
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /note="covalent"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00433"
FT BINDING 19
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /ligand_part="Fe"
FT /ligand_part_id="ChEBI:CHEBI:18248"
FT /note="axial binding residue"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00433"
FT BINDING 81
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /ligand_part="Fe"
FT /ligand_part_id="ChEBI:CHEBI:18248"
FT /note="axial binding residue"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00433"
FT MOD_RES 2
FT /note="N-acetylglycine"
FT /evidence="ECO:0000250|UniProtKB:P62894"
FT MOD_RES 49
FT /note="Phosphotyrosine"
FT /evidence="ECO:0000250|UniProtKB:P62894"
FT MOD_RES 56
FT /note="N6-succinyllysine"
FT /evidence="ECO:0000250|UniProtKB:P62897"
FT MOD_RES 73
FT /note="N6-acetyllysine; alternate"
FT /evidence="ECO:0000250|UniProtKB:P62897"
FT MOD_RES 73
FT /note="N6-succinyllysine; alternate"
FT /evidence="ECO:0000250|UniProtKB:P62897"
FT MOD_RES 98
FT /note="Phosphotyrosine"
FT /evidence="ECO:0000250|UniProtKB:P62894"
FT MOD_RES 100
FT /note="N6-acetyllysine"
FT /evidence="ECO:0000250|UniProtKB:P62897"
SQ SEQUENCE 105 AA; 11790 MW; A0BF06836BE50192 CRC64;
MGDVEKGKRI FIQKCSQCHT VEKGGKHKTG PNLHGLFGRK TGQAAGFTYT EANKNKGIIW
GEDTLMEYLE NPKKYIPGTK MIFVGIKKKG EREDLIAYLK KATNE
