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 03-AUG-2022, entry version 90.
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 NIES-3377 / 10D) (Unicellular 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=NIES-3377 / 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 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 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 AlphaFoldDB; Q85FS3; -.
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 BINDING 50
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /note="covalent"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01378"
FT BINDING 53
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /note="covalent"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01378"
FT BINDING 54
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 105
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 150 AA; 16607 MW; 3E069A86F61C8F2E CRC64;
MIRVIMLLVL VWMTPMISWA TEVVKDVSGQ KVEVNADQLK RGKRLFNTHC SACHVGGITK
TNPNIGLDLE SLSLATPARN NLDALVDYMK NPTTYDGSES IAQIHPSIAS SDIFPKMRDL
SEDDLYAIAS HILTQAQIQA EKWGGGKIYY
