ID   PSBV2_TRIEI             Reviewed;         165 AA.
AC   Q111E8;
DT   24-JUL-2007, integrated into UniProtKB/Swiss-Prot.
DT   22-AUG-2006, sequence version 1.
DT   03-AUG-2022, entry version 90.
DE   RecName: Full=Cytochrome c-550-like protein;
DE   Flags: Precursor;
GN   Name=psbV2; OrderedLocusNames=Tery_2687;
OS   Trichodesmium erythraeum (strain IMS101).
OC   Bacteria; Cyanobacteria; Oscillatoriophycideae; Oscillatoriales;
OC   Microcoleaceae; Trichodesmium.
OX   NCBI_TaxID=203124;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=IMS101;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA   Glavina del Rio T., Hammon N., Israni S., Dalin E., Tice H., Pitluck S.,
RA   Kiss H., Munk A.C., Brettin T., Bruce D., Han C., Tapia R., Gilna P.,
RA   Schmutz J., Larimer F., Land M., Hauser L., Kyrpides N., Kim E.,
RA   Richardson P.;
RT   "Complete sequence of Trichodesmium erythraeum IMS101.";
RL   Submitted (JUN-2006) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Possible low-potential cytochrome c. {ECO:0000305}.
CC   -!- COFACTOR:
CC       Name=heme c; Xref=ChEBI:CHEBI:61717; Evidence={ECO:0000305};
CC       Note=Binds 1 heme c group covalently per subunit. {ECO:0000305};
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000305};
CC       Peripheral membrane protein {ECO:0000305}; Lumenal side {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the cytochrome c family. PsbV subfamily.
CC       {ECO:0000305}.
CC   -!- CAUTION: In psbV2 it is not clear which residue serves as the second
CC       axial ligand for the heme group. {ECO:0000305}.
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DR   EMBL; CP000393; ABG51876.1; -; Genomic_DNA.
DR   RefSeq; WP_011612238.1; NC_008312.1.
DR   AlphaFoldDB; Q111E8; -.
DR   SMR; Q111E8; -.
DR   STRING; 203124.Tery_2687; -.
DR   EnsemblBacteria; ABG51876; ABG51876; Tery_2687.
DR   KEGG; ter:Tery_2687; -.
DR   eggNOG; COG2010; Bacteria.
DR   HOGENOM; CLU_104149_0_0_3; -.
DR   OMA; NCHAGGV; -.
DR   OrthoDB; 1691417at2; -.
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:0015979; P:photosynthesis; IEA:UniProtKB-KW.
DR   GO; GO:0022904; P:respiratory electron transport chain; IEA:InterPro.
DR   Gene3D; 1.10.760.10; -; 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; IPR017490; PSII_cyt_PsbV2.
DR   Pfam; PF14495; Cytochrom_C550; 1.
DR   PIRSF; PIRSF005890; Phot_II_cyt_c550; 1.
DR   SUPFAM; SSF46626; SSF46626; 1.
DR   TIGRFAMs; TIGR03046; PS_II_psbV2; 1.
DR   PROSITE; PS51007; CYTC; 1.
PE   3: Inferred from homology;
KW   Electron transport; Heme; Iron; Membrane; Metal-binding; Photosynthesis;
KW   Photosystem II; Signal; Thylakoid; Transport.
FT   SIGNAL          1..30
FT                   /evidence="ECO:0000255"
FT   CHAIN           31..165
FT                   /note="Cytochrome c-550-like protein"
FT                   /id="PRO_5000126971"
FT   BINDING         75
FT                   /ligand="heme c"
FT                   /ligand_id="ChEBI:CHEBI:61717"
FT                   /note="covalent"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00433"
FT   BINDING         78
FT                   /ligand="heme c"
FT                   /ligand_id="ChEBI:CHEBI:61717"
FT                   /note="covalent"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00433"
FT   BINDING         79
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|PROSITE-ProRule:PRU00433"
SQ   SEQUENCE   165 AA;  18490 MW;  3DDB96815092CADE CRC64;
     MLNKSLLIRF VLTILIIVQV IIFDTQPVQA AVDSYVKRYL DAEIPVGIKL NKQGELKNFS
     AEDLSEGKQT FAKNCLNCHV GGANLVNPSV SLSLEKLKGA TPPRDDLNNL VAFLRDPMIY
     DGSSYTLFCR QITENWMSQQ EVENIAAFIL RAAQKAPYWG VENVR