CYC_HIPAM
ID CYC_HIPAM Reviewed; 105 AA.
AC P00007;
DT 21-JUL-1986, integrated into UniProtKB/Swiss-Prot.
DT 23-JAN-2007, sequence version 2.
DT 03-AUG-2022, entry version 112.
DE RecName: Full=Cytochrome c;
GN Name=CYCS; Synonyms=CYC;
OS Hippopotamus amphibius (Hippopotamus).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC Eutheria; Laurasiatheria; Artiodactyla; Whippomorpha; Ancodonta;
OC Hippopotamidae; Hippopotamus.
OX NCBI_TaxID=9833;
RN [1]
RP PROTEIN SEQUENCE OF 2-105, AND ACETYLATION AT GLY-2.
RX PubMed=214435; DOI=10.1016/s0021-9258(17)34270-9;
RA Thompson R.B., Borden D., Tarr G.E., Margoliash E.;
RT "Heterogeneity of amino acid sequence in hippopotamus cytochrome c.";
RL J. Biol. Chem. 253:8957-8961(1978).
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.
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. Note=Loosely
CC associated with the inner membrane.
CC -!- PTM: Binds 1 heme c group covalently per subunit.
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 PIR; A00008; CCHP.
DR AlphaFoldDB; P00007; -.
DR SMR; P00007; -.
DR iPTMnet; P00007; -.
DR GO; GO:0005829; C:cytosol; ISS:UniProtKB.
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 1: Evidence at protein level;
KW Acetylation; Apoptosis; Direct protein sequencing; Electron transport;
KW Heme; Iron; Metal-binding; Mitochondrion; Phosphoprotein;
KW Respiratory chain; Transport.
FT INIT_MET 1
FT /note="Removed"
FT /evidence="ECO:0000269|PubMed:214435"
FT CHAIN 2..105
FT /note="Cytochrome c"
FT /id="PRO_0000108216"
FT BINDING 15
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /note="covalent"
FT BINDING 18
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /note="covalent"
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 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 MOD_RES 2
FT /note="N-acetylglycine"
FT /evidence="ECO:0000269|PubMed:214435"
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"
FT VARIANT 4
FT /note="V -> I"
SQ SEQUENCE 105 AA; 11661 MW; B774C628FD121683 CRC64;
MGDVEKGKKI FVQKCAQCHT VEKGGKHKTG PNLHGLFGRK TGQSPGFSYT DANKNKGITW
GEETLMEYLE NPKKYIPGTK MIFAGIKKKG ERADLIAYLK QATNE
