CY550_NOSS1
ID CY550_NOSS1 Reviewed; 163 AA.
AC Q8Z044;
DT 24-JUL-2007, integrated into UniProtKB/Swiss-Prot.
DT 01-MAR-2002, sequence version 1.
DT 03-AUG-2022, entry version 111.
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=all0259;
OS Nostoc sp. (strain PCC 7120 / SAG 25.82 / UTEX 2576).
OC Bacteria; Cyanobacteria; Nostocales; Nostocaceae; Nostoc.
OX NCBI_TaxID=103690;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=PCC 7120 / SAG 25.82 / UTEX 2576;
RX PubMed=11759840; DOI=10.1093/dnares/8.5.205;
RA Kaneko T., Nakamura Y., Wolk C.P., Kuritz T., Sasamoto S., Watanabe A.,
RA Iriguchi M., Ishikawa A., Kawashima K., Kimura T., Kishida Y., Kohara M.,
RA Matsumoto M., Matsuno A., Muraki A., Nakazaki N., Shimpo S., Sugimoto M.,
RA Takazawa M., Yamada M., Yasuda M., Tabata S.;
RT "Complete genomic sequence of the filamentous nitrogen-fixing
RT cyanobacterium Anabaena sp. strain PCC 7120.";
RL DNA Res. 8:205-213(2001).
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 c; Xref=ChEBI:CHEBI:61717;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01378};
CC Note=Binds 1 heme c 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; BA000019; BAB77783.1; -; Genomic_DNA.
DR PIR; AC1839; AC1839.
DR RefSeq; WP_010994436.1; NZ_RSCN01000032.1.
DR AlphaFoldDB; Q8Z044; -.
DR SMR; Q8Z044; -.
DR STRING; 103690.17135237; -.
DR EnsemblBacteria; BAB77783; BAB77783; BAB77783.
DR KEGG; ana:all0259; -.
DR eggNOG; COG2010; Bacteria.
DR OMA; GTCHAGG; -.
DR OrthoDB; 1553768at2; -.
DR Proteomes; UP000002483; Chromosome.
DR GO; GO:0009523; C:photosystem II; IEA:UniProtKB-KW.
DR GO; GO:0031676; C:plasma membrane-derived 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..26
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01378"
FT CHAIN 27..163
FT /note="Cytochrome c-550"
FT /id="PRO_0000295595"
FT BINDING 63
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /note="covalent"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01378"
FT BINDING 66
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /note="covalent"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01378"
FT BINDING 67
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 /evidence="ECO:0000255|HAMAP-Rule:MF_01378"
FT BINDING 118
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 /evidence="ECO:0000255|HAMAP-Rule:MF_01378"
SQ SEQUENCE 163 AA; 17759 MW; 3727FCD935F28360 CRC64;
MFRRLIGVVV ATALLTFQLI VGSATALELD EATRTVPLNA QGDTVTLSLK QVKEGKRLFQ
YACAQCHVGG VTKTNQNVGL EPEALALATP NRNNIEGLVD YMKNPTTYDG VEEISEIHPS
LKSADIFTAM RNLTDKDLES IAGHILLQPK ILGDKWGGGK IYY
