ID   PETO_CHLRE              Reviewed;         198 AA.
AC   Q9LLC6;
DT   15-NOV-2002, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2000, sequence version 1.
DT   25-MAY-2022, entry version 70.
DE   RecName: Full=Cytochrome b6-f complex subunit petO, chloroplastic;
DE   AltName: Full=Cytochrome b6-f complex subunit V;
DE            Short=suV;
DE   AltName: Full=Cytochrome b6-f-associated phosphoprotein;
DE   Flags: Precursor;
GN   Name=PETO;
OS   Chlamydomonas reinhardtii (Chlamydomonas smithii).
OC   Eukaryota; Viridiplantae; Chlorophyta; core chlorophytes; Chlorophyceae;
OC   CS clade; Chlamydomonadales; Chlamydomonadaceae; Chlamydomonas.
OX   NCBI_TaxID=3055 {ECO:0000312|EMBL:AAF74115.1};
RN   [1] {ECO:0000305}
RP   NUCLEOTIDE SEQUENCE [MRNA], PROTEIN SEQUENCE OF 52-86, SUBCELLULAR
RP   LOCATION, AND PHOSPHORYLATION.
RX   PubMed=10748028; DOI=10.1074/jbc.m001468200;
RA   Hamel P., Olive J., Pierre Y., Wollman F.-A., de Vitry C.;
RT   "A new subunit of cytochrome b6f complex undergoes reversible
RT   phosphorylation upon state transition.";
RL   J. Biol. Chem. 275:17072-17079(2000).
RN   [2] {ECO:0000305}
RP   SUBCELLULAR LOCATION.
RA   Lemaire C., Girard-Bascou J., Wollman F.-A., Bennoun P.;
RT   "Studies on the cytochrome b6/f complex. I. Characterisation of the complex
RT   subunits in Chamydomonas reinhardtii.";
RL   Biochim. Biophys. Acta 851:229-238(1986).
CC   -!- FUNCTION: The cytochrome b6-f complex functions in the linear cross-
CC       membrane transport of electrons between photosystem II and I, as well
CC       as in cyclic electron flow around photosystem I. {ECO:0000305}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000269|PubMed:10748028, ECO:0000269|Ref.2}.
CC   -!- PTM: Phosphorylated. {ECO:0000269|PubMed:10748028}.
CC   -!- SIMILARITY: Belongs to the petO family. {ECO:0000305}.
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DR   EMBL; AF222893; AAF74115.1; -; mRNA.
DR   RefSeq; XP_001702816.1; XM_001702764.1.
DR   AlphaFoldDB; Q9LLC6; -.
DR   STRING; 3055.EDO96861; -.
DR   ProMEX; Q9LLC6; -.
DR   EnsemblPlants; PNW75831; PNW75831; CHLRE_12g558900v5.
DR   GeneID; 5728353; -.
DR   Gramene; PNW75831; PNW75831; CHLRE_12g558900v5.
DR   KEGG; cre:CHLRE_12g558900v5; -.
DR   HOGENOM; CLU_1379887_0_0_1; -.
DR   OMA; SAHKGAF; -.
DR   OrthoDB; 1606108at2759; -.
DR   GO; GO:0009535; C:chloroplast thylakoid membrane; IDA:UniProtKB.
DR   GO; GO:0009512; C:cytochrome b6f complex; IDA:UniProtKB.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0070469; C:respirasome; IEA:UniProtKB-KW.
DR   GO; GO:0009767; P:photosynthetic electron transport chain; NAS:UniProtKB.
PE   1: Evidence at protein level;
KW   Chloroplast; Direct protein sequencing; Electron transport; Membrane;
KW   Phosphoprotein; Plastid; Respiratory chain; Thylakoid; Transit peptide;
KW   Transmembrane; Transmembrane helix; Transport.
FT   TRANSIT         1..51
FT                   /note="Chloroplast"
FT                   /evidence="ECO:0000269|PubMed:10748028"
FT   CHAIN           52..198
FT                   /note="Cytochrome b6-f complex subunit petO, chloroplastic"
FT                   /id="PRO_0000023865"
FT   TOPO_DOM        52..115
FT                   /note="Lumenal"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        116..136
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TOPO_DOM        137..198
FT                   /note="Stromal"
FT                   /evidence="ECO:0000255"
FT   REGION          65..111
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   198 AA;  20247 MW;  E3369D9175C176F8 CRC64;
     MALRCKTPAA TCAARSRRSV RVSAHKGAFE QAQVAAAAFV AAAVIAAPAN AGVVLQQPVL
     KKAFQDDTPA APPPKREFRG LAPPALPQSD APNVAAEKPK KAEVVESTSG GLDPRSVALP
     GALALTIGGF VAASKIDGSF NDWFMEAVVR DSNNYAGYEA TLKSENGVTF PKVAAGGTKK
     VKAATGSKKG GFPFGGKK