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Database: UniProt
Entry: CY550_CYAM1
LinkDB: CY550_CYAM1
Original site: CY550_CYAM1 
ID   CY550_CYAM1             Reviewed;         150 AA.
AC   Q85FS3;
DT   24-JUL-2007, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-2003, sequence version 1.
DT   02-DEC-2020, entry version 86.
DE   RecName: Full=Cytochrome c-550 {ECO:0000255|HAMAP-Rule:MF_01378};
DE   AltName: Full=Cytochrome c550 {ECO:0000255|HAMAP-Rule:MF_01378};
DE   Flags: Precursor;
GN   Name=psbV {ECO:0000255|HAMAP-Rule:MF_01378};
OS   Cyanidioschyzon merolae (strain 10D) (Red alga).
OG   Plastid; Chloroplast.
OC   Eukaryota; Rhodophyta; Bangiophyceae; Cyanidiales; Cyanidiaceae;
OC   Cyanidioschyzon.
OX   NCBI_TaxID=280699;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=10D;
RX   PubMed=12755171; DOI=10.1093/dnares/10.2.67;
RA   Ohta N., Matsuzaki M., Misumi O., Miyagishima S.-Y., Nozaki H., Tanaka K.,
RA   Shin-i T., Kohara Y., Kuroiwa T.;
RT   "Complete sequence and analysis of the plastid genome of the unicellular
RT   red alga Cyanidioschyzon merolae.";
RL   DNA Res. 10:67-77(2003).
CC   -!- FUNCTION: Low-potential cytochrome c that plays a role in the oxygen-
CC       evolving complex of photosystem II. {ECO:0000255|HAMAP-Rule:MF_01378}.
CC   -!- COFACTOR:
CC       Name=heme; Xref=ChEBI:CHEBI:30413;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01378};
CC       Note=Binds 1 heme group covalently per subunit. {ECO:0000255|HAMAP-
CC       Rule:MF_01378};
CC   -!- SUBUNIT: The oxygen-evolving complex in red algae is composed of psbO
CC       (OEC33), psbQ', cytochrome c-550 and psbU. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000255|HAMAP-Rule:MF_01378}; Peripheral membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_01378}; Lumenal side {ECO:0000255|HAMAP-
CC       Rule:MF_01378}. Note=Associated with photosystem II at the lumenal side
CC       of the thylakoid membrane. {ECO:0000255|HAMAP-Rule:MF_01378}.
CC   -!- SIMILARITY: Belongs to the cytochrome c family. PsbV subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_01378}.
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DR   EMBL; AB002583; BAC76272.1; -; Genomic_DNA.
DR   RefSeq; NP_849110.1; NC_004799.1.
DR   SMR; Q85FS3; -.
DR   STRING; 45157.CMV208CT; -.
DR   EnsemblPlants; CMV208CT; CMV208CT; CMV208C.
DR   GeneID; 844959; -.
DR   Gramene; CMV208CT; CMV208CT; CMV208C.
DR   KEGG; cme:CymeCp178; -.
DR   eggNOG; ENOG502RYSJ; Eukaryota.
DR   HOGENOM; CLU_104149_1_0_1; -.
DR   Proteomes; UP000007014; Chloroplast.
DR   GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0009523; C:photosystem II; 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:0005506; F:iron ion binding; IEA:InterPro.
DR   GO; GO:0018063; P:cytochrome c-heme linkage; IEA:UniProtKB-UniRule.
DR   GO; GO:0019684; P:photosynthesis, light reaction; IEA:UniProtKB-UniRule.
DR   GO; GO:0022904; P:respiratory electron transport chain; IEA:InterPro.
DR   Gene3D; 1.10.760.10; -; 1.
DR   HAMAP; MF_01378; PSII_Cyt550; 1.
DR   InterPro; IPR009056; Cyt_c-like_dom.
DR   InterPro; IPR036909; Cyt_c-like_dom_sf.
DR   InterPro; IPR029490; Cytochrom_C550.
DR   InterPro; IPR016003; PSII_cyt_c550.
DR   InterPro; IPR017851; PSII_PsbV_cyt_c550.
DR   Pfam; PF14495; Cytochrom_C550; 1.
DR   PIRSF; PIRSF005890; Phot_II_cyt_c550; 1.
DR   SUPFAM; SSF46626; SSF46626; 1.
DR   TIGRFAMs; TIGR03045; PS_II_C550; 1.
DR   PROSITE; PS51007; CYTC; 1.
PE   3: Inferred from homology;
KW   Chloroplast; Electron transport; Heme; Iron; Membrane; Metal-binding;
KW   Photosynthesis; Photosystem II; Plastid; Reference proteome; Signal;
KW   Thylakoid; Transport.
FT   SIGNAL          1..20
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01378"
FT   CHAIN           21..150
FT                   /note="Cytochrome c-550"
FT                   /id="PRO_0000295611"
FT   METAL           54
FT                   /note="Iron (heme axial ligand)"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01378"
FT   METAL           105
FT                   /note="Iron (heme axial ligand)"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01378"
FT   BINDING         50
FT                   /note="Heme (covalent)"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01378"
FT   BINDING         53
FT                   /note="Heme (covalent)"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01378"
SQ   SEQUENCE   150 AA;  16607 MW;  3E069A86F61C8F2E CRC64;
     MIRVIMLLVL VWMTPMISWA TEVVKDVSGQ KVEVNADQLK RGKRLFNTHC SACHVGGITK
     TNPNIGLDLE SLSLATPARN NLDALVDYMK NPTTYDGSES IAQIHPSIAS SDIFPKMRDL
     SEDDLYAIAS HILTQAQIQA EKWGGGKIYY
//
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