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Database: UniProt
Entry: CY550_SYNP2
LinkDB: CY550_SYNP2
Original site: CY550_SYNP2 
ID   CY550_SYNP2             Reviewed;         170 AA.
AC   Q55210; B1XLG7;
DT   01-NOV-1997, integrated into UniProtKB/Swiss-Prot.
DT   10-JUN-2008, sequence version 2.
DT   10-FEB-2021, entry version 141.
DE   RecName: Full=Cytochrome c-550 {ECO:0000255|HAMAP-Rule:MF_01378};
DE   AltName: Full=Cytochrome c550 {ECO:0000255|HAMAP-Rule:MF_01378};
DE   AltName: Full=Low-potential cytochrome c {ECO:0000255|HAMAP-Rule:MF_01378};
DE   Flags: Precursor;
GN   Name=psbV {ECO:0000255|HAMAP-Rule:MF_01378}; Synonyms=cytCLP;
GN   OrderedLocusNames=SYNPCC7002_A0112;
OS   Synechococcus sp. (strain ATCC 27264 / PCC 7002 / PR-6) (Agmenellum
OS   quadruplicatum).
OC   Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus;
OC   unclassified Synechococcus.
OX   NCBI_TaxID=32049;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA], PROTEIN SEQUENCE OF 35-58, SUBCELLULAR
RP   LOCATION, AND ASSOCIATION OF THE PROTEIN WITH THYLAKOID MEMBRANES.
RX   PubMed=7972498; DOI=10.1104/pp.105.4.1313;
RA   Nishiyama Y., Hayashi H., Watanabe T., Murata N.;
RT   "Photosynthetic oxygen evolution is stabilized by cytochrome c550 against
RT   heat inactivation in Synechococcus sp. PCC 7002.";
RL   Plant Physiol. 105:1313-1319(1994).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 27264 / PCC 7002 / PR-6;
RA   Li T., Zhao J., Zhao C., Liu Z., Zhao F., Marquardt J., Nomura C.T.,
RA   Persson S., Detter J.C., Richardson P.M., Lanz C., Schuster S.C., Wang J.,
RA   Li S., Huang X., Cai T., Yu Z., Luo J., Zhao J., Bryant D.A.;
RT   "Complete sequence of Synechococcus sp. PCC 7002.";
RL   Submitted (FEB-2008) to the EMBL/GenBank/DDBJ databases.
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 cyanobacterial oxygen-evolving complex is composed of
CC       PsbO, PsbP, PsbQ, PsbV and PsbU. {ECO:0000255|HAMAP-Rule:MF_01378}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000255|HAMAP-
CC       Rule:MF_01378, ECO:0000269|PubMed:7972498}; Peripheral membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_01378, ECO:0000269|PubMed:7972498}; Lumenal
CC       side {ECO:0000255|HAMAP-Rule:MF_01378, ECO:0000269|PubMed:7972498}.
CC       Note=Associated with photosystem II at the lumenal side of the
CC       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; D29788; BAA06173.1; -; Genomic_DNA.
DR   EMBL; CP000951; ACA98127.1; -; Genomic_DNA.
DR   RefSeq; WP_012305751.1; NC_010475.1.
DR   SMR; Q55210; -.
DR   STRING; 32049.SYNPCC7002_A0112; -.
DR   EnsemblBacteria; ACA98127; ACA98127; SYNPCC7002_A0112.
DR   KEGG; syp:SYNPCC7002_A0112; -.
DR   eggNOG; COG2010; Bacteria.
DR   HOGENOM; CLU_104149_1_0_3; -.
DR   OMA; DYMKDPT; -.
DR   Proteomes; UP000001688; Chromosome.
DR   GO; GO:0009523; C:photosystem II; IEA:UniProtKB-KW.
DR   GO; GO:0042651; C:thylakoid membrane; IEA:UniProtKB-SubCell.
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   1: Evidence at protein level;
KW   Direct protein sequencing; Electron transport; Heme; Iron; Membrane;
KW   Metal-binding; Photosynthesis; Photosystem II; Reference proteome; Signal;
KW   Thylakoid; Transport.
FT   SIGNAL          1..34
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01378,
FT                   ECO:0000269|PubMed:7972498"
FT   CHAIN           35..170
FT                   /note="Cytochrome c-550"
FT                   /id="PRO_0000006520"
FT   METAL           74
FT                   /note="Iron (heme axial ligand)"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01378"
FT   METAL           125
FT                   /note="Iron (heme axial ligand)"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01378"
FT   BINDING         70
FT                   /note="Heme (covalent)"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01378"
FT   BINDING         73
FT                   /note="Heme (covalent)"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01378"
FT   CONFLICT        117
FT                   /note="G -> V (in Ref. 1; BAA06173)"
FT                   /evidence="ECO:0000305"
SQ   SEQUENCE   170 AA;  18777 MW;  B60E4C9A892EA87D CRC64;
     MNKILGIDPL KKFIFGISAF VLLFWQLNVG AANATALREV DRTVNLNETE TVVLSDQQVA
     KGERIFINTC STCHNSGRTK SNPNVTLSLV DLEGAEPRRD NILAMVDYLK NPTSYDGELD
     LSQLHPNTVR ADIWSSMRNL NEEDLQNVSG YVLVQAQVRG VAWGGGKTVN
//
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