ID CY550_PROMM Reviewed; 170 AA.
AC Q7V5W0;
DT 24-JUL-2007, integrated into UniProtKB/Swiss-Prot.
DT 01-OCT-2003, sequence version 1.
DT 02-DEC-2020, entry version 99.
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}; OrderedLocusNames=PMT_1427;
OS Prochlorococcus marinus (strain MIT 9313).
OC Bacteria; Cyanobacteria; Synechococcales; Prochloraceae; Prochlorococcus.
OX NCBI_TaxID=74547;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=MIT 9313;
RX PubMed=12917642; DOI=10.1038/nature01947;
RA Rocap G., Larimer F.W., Lamerdin J.E., Malfatti S., Chain P., Ahlgren N.A.,
RA Arellano A., Coleman M., Hauser L., Hess W.R., Johnson Z.I., Land M.L.,
RA Lindell D., Post A.F., Regala W., Shah M., Shaw S.L., Steglich C.,
RA Sullivan M.B., Ting C.S., Tolonen A., Webb E.A., Zinser E.R.,
RA Chisholm S.W.;
RT "Genome divergence in two Prochlorococcus ecotypes reflects oceanic niche
RT differentiation.";
RL Nature 424:1042-1047(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 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}; Peripheral membrane protein {ECO:0000255|HAMAP-
CC Rule:MF_01378}; Lumenal side {ECO:0000255|HAMAP-Rule:MF_01378}.
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; BX548175; CAE21602.1; -; Genomic_DNA.
DR RefSeq; WP_011130795.1; NC_005071.1.
DR SMR; Q7V5W0; -.
DR STRING; 74547.PMT_1427; -.
DR EnsemblBacteria; CAE21602; CAE21602; PMT_1427.
DR KEGG; pmt:PMT_1427; -.
DR eggNOG; COG2010; Bacteria.
DR HOGENOM; CLU_104149_1_0_3; -.
DR OMA; DYMKDPT; -.
DR OrthoDB; 1553768at2; -.
DR Proteomes; UP000001423; 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 3: Inferred from homology;
KW Electron transport; Heme; Iron; Membrane; Metal-binding; Photosynthesis;
KW Photosystem II; Reference proteome; Signal; Thylakoid; Transport.
FT SIGNAL 1..33
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01378"
FT CHAIN 34..170
FT /note="Cytochrome c-550"
FT /id="PRO_5000096803"
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"
SQ SEQUENCE 170 AA; 18174 MW; 0F1C1260905C6E0C CRC64;
MASLFASLGR SLIKLLIVLP VIIGLSISSP AMAAQWDAET LTVPAGSGGQ QVTFTESEIK
SASKLFKSNC ATCHNQGVTK TNQNVGLDLE ALSLASPARD NVDGLVEFLK NPMSYDGEYS
IADTHPGISS SDVYVQMRTL NDEDLRLIAG YILTAEKVQG DQWGGGKIYF
//
