ID   CY550_THAWE             Reviewed;          80 AA.
AC   O98448;
DT   01-JUN-2001, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-1999, sequence version 1.
DT   03-AUG-2022, entry version 80.
DE   RecName: Full=Cytochrome c-550;
DE   AltName: Full=Cytochrome c550;
DE   Flags: Fragment;
GN   Name=psbV;
OS   Thalassiosira weissflogii (Marine diatom).
OG   Plastid; Chloroplast.
OC   Eukaryota; Sar; Stramenopiles; Ochrophyta; Bacillariophyta;
OC   Coscinodiscophyceae; Thalassiosirophycidae; Thalassiosirales;
OC   Thalassiosiraceae; Conticribra.
OX   NCBI_TaxID=1577725;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   Gueneau P., Morel F., Laroche J., Erdner D.;
RT   "The petF region of the chloroplast genome from the diatom Thalassiosira
RT   weissflogii: sequence, organization and phylogeny.";
RL   Eur. J. Phycol. 33:203-211(1998).
CC   -!- FUNCTION: Low-potential cytochrome c that plays a role in the oxygen-
CC       evolving complex of photosystem II. {ECO:0000250}.
CC   -!- COFACTOR:
CC       Name=heme; Xref=ChEBI:CHEBI:30413; Evidence={ECO:0000250};
CC       Note=Binds 1 heme group covalently per subunit. {ECO:0000250};
CC   -!- SUBUNIT: The oxygen-evolving complex may be composed of psbO, psbQ',
CC       psbV and psbU. {ECO:0000305}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000250}; Peripheral membrane protein {ECO:0000250}; Lumenal side
CC       {ECO:0000250}. Note=Associated with photosystem II at the lumenal side
CC       of the thylakoid membrane. {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the cytochrome c family. PsbV subfamily.
CC       {ECO:0000305}.
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DR   EMBL; AF049491; AAD12750.1; -; Genomic_DNA.
DR   AlphaFoldDB; O98448; -.
DR   SMR; O98448; -.
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:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-KW.
DR   Gene3D; 1.10.760.10; -; 1.
DR   InterPro; IPR036909; Cyt_c-like_dom_sf.
DR   InterPro; IPR029490; Cytochrom_C550.
DR   Pfam; PF14495; Cytochrom_C550; 1.
DR   SUPFAM; SSF46626; SSF46626; 1.
PE   3: Inferred from homology;
KW   Chloroplast; Electron transport; Heme; Iron; Membrane; Metal-binding;
KW   Photosynthesis; Photosystem II; Plastid; Thylakoid; Transport.
FT   CHAIN           <1..80
FT                   /note="Cytochrome c-550"
FT                   /id="PRO_0000108379"
FT   BINDING         47
FT                   /ligand="heme"
FT                   /ligand_id="ChEBI:CHEBI:30413"
FT                   /ligand_part="Fe"
FT                   /ligand_part_id="ChEBI:CHEBI:18248"
FT                   /note="axial binding residue"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00433"
FT   NON_TER         1
SQ   SEQUENCE   80 AA;  8908 MW;  20364357DE890055 CRC64;
     ALSLATPRRD NINALVDYLK NPTSYDGLDS IAEIHPSIKS ADIYPRMRSL TDDDLYAIAG
     HIMLQPKVVS EKWGGGKIYF