ID   CYC2_RHOTE              Reviewed;          92 AA.
AC   P00098;
DT   21-JUL-1986, integrated into UniProtKB/Swiss-Prot.
DT   21-JUL-1986, sequence version 1.
DT   03-AUG-2022, entry version 82.
DE   RecName: Full=Cytochrome c2;
OS   Rhodocyclus tenuis (Rhodospirillum tenue).
OC   Bacteria; Proteobacteria; Betaproteobacteria; Rhodocyclales;
OC   Rhodocyclaceae; Rhodocyclus.
OX   NCBI_TaxID=1066;
RN   [1]
RP   PROTEIN SEQUENCE.
RC   STRAIN=DSM 3761;
RX   PubMed=221823; DOI=10.1038/278661a0;
RA   Ambler R.P., Meyer T.E., Kamen M.D.;
RT   "Anomalies in amino acid sequences of small cytochromes c and cytochromes
RT   c' from two species of purple photosynthetic bacteria.";
RL   Nature 278:661-662(1979).
CC   -!- FUNCTION: Cytochrome c2 is found mainly in purple, non-sulfur,
CC       photosynthetic bacteria where it functions as the electron donor to the
CC       oxidized bacteriochlorophyll in the photophosphorylation pathway.
CC       However, it may also have a role in the respiratory chain and is found
CC       in some non-photosynthetic bacteria.
CC   -!- PTM: Binds 1 heme c group covalently per subunit.
CC   -!- SIMILARITY: Belongs to the cytochrome c family. {ECO:0000305}.
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DR   PIR; A00090; CCQF2T.
DR   AlphaFoldDB; P00098; -.
DR   SMR; P00098; -.
DR   GO; GO:0009055; F:electron transfer activity; IEA:InterPro.
DR   GO; GO:0020037; F:heme binding; IEA:InterPro.
DR   GO; GO:0005506; F:iron ion binding; IEA:InterPro.
DR   GO; GO:0015979; P:photosynthesis; 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; IPR002324; Cyt_c_ID.
DR   Pfam; PF00034; Cytochrom_C; 1.
DR   PRINTS; PR00606; CYTCHROMECID.
DR   SUPFAM; SSF46626; SSF46626; 1.
DR   PROSITE; PS51007; CYTC; 1.
PE   1: Evidence at protein level;
KW   Direct protein sequencing; Electron transport; Heme; Iron; Metal-binding;
KW   Photosynthesis; Transport.
FT   CHAIN           1..92
FT                   /note="Cytochrome c2"
FT                   /id="PRO_0000108347"
FT   BINDING         12
FT                   /ligand="heme c"
FT                   /ligand_id="ChEBI:CHEBI:61717"
FT                   /note="covalent"
FT   BINDING         15
FT                   /ligand="heme c"
FT                   /ligand_id="ChEBI:CHEBI:61717"
FT                   /note="covalent"
FT   BINDING         16
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         66
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"
SQ   SEQUENCE   92 AA;  9781 MW;  5A51C1E372162F9F CRC64;
     ADESALAQTK GCLACHNPEK KVVGPAYGWV AKKYAGQAGA EAKLVAKVMA GGQGVWAKQL
     GAEIPMPANN VTKEEATRLV KWVLSLKQID YK