ID   PETM_RIPO1              Reviewed;          37 AA.
AC   B7K1J7;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   10-FEB-2009, sequence version 1.
DT   25-MAY-2022, entry version 50.
DE   RecName: Full=Cytochrome b6-f complex subunit 7 {ECO:0000255|HAMAP-Rule:MF_00396};
DE   AltName: Full=Cytochrome b6-f complex subunit PetM {ECO:0000255|HAMAP-Rule:MF_00396};
DE   AltName: Full=Cytochrome b6-f complex subunit VII {ECO:0000255|HAMAP-Rule:MF_00396};
GN   Name=petM {ECO:0000255|HAMAP-Rule:MF_00396};
GN   OrderedLocusNames=PCC8801_3576;
OS   Rippkaea orientalis (strain PCC 8801) (Cyanothece sp. (strain PCC 8801)).
OC   Bacteria; Cyanobacteria; Oscillatoriophycideae; Chroococcales;
OC   Aphanothecaceae; Rippkaea; Rippkaea orientalis.
OX   NCBI_TaxID=41431;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PCC 8801;
RX   PubMed=21972240; DOI=10.1128/mbio.00214-11;
RA   Bandyopadhyay A., Elvitigala T., Welsh E., Stockel J., Liberton M., Min H.,
RA   Sherman L.A., Pakrasi H.B.;
RT   "Novel metabolic attributes of the genus Cyanothece, comprising a group of
RT   unicellular nitrogen-fixing Cyanobacteria.";
RL   MBio 2:E214-E214(2011).
CC   -!- FUNCTION: Component of the cytochrome b6-f complex, which mediates
CC       electron transfer between photosystem II (PSII) and photosystem I
CC       (PSI), cyclic electron flow around PSI, and state transitions.
CC       {ECO:0000255|HAMAP-Rule:MF_00396}.
CC   -!- SUBUNIT: The 4 large subunits of the cytochrome b6-f complex are
CC       cytochrome b6, subunit IV (17 kDa polypeptide, PetD), cytochrome f and
CC       the Rieske protein, while the 4 small subunits are PetG, PetL, PetM and
CC       PetN. The complex functions as a dimer. {ECO:0000255|HAMAP-
CC       Rule:MF_00396}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000255|HAMAP-
CC       Rule:MF_00396}; Single-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_00396}.
CC   -!- SIMILARITY: Belongs to the PetM family. {ECO:0000255|HAMAP-
CC       Rule:MF_00396}.
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DR   EMBL; CP001287; ACK67539.1; -; Genomic_DNA.
DR   RefSeq; WP_012596797.1; NC_011726.1.
DR   AlphaFoldDB; B7K1J7; -.
DR   SMR; B7K1J7; -.
DR   STRING; 41431.PCC8801_3576; -.
DR   EnsemblBacteria; ACK67539; ACK67539; PCC8801_3576.
DR   KEGG; cyp:PCC8801_3576; -.
DR   eggNOG; ENOG5033D32; Bacteria.
DR   HOGENOM; CLU_216743_0_0_3; -.
DR   Proteomes; UP000008204; Chromosome.
DR   GO; GO:0009512; C:cytochrome b6f complex; IEA:InterPro.
DR   GO; GO:0016021; C:integral component of membrane; 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:UniProtKB-UniRule.
DR   GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-KW.
DR   HAMAP; MF_00396; Cytb6_f_PetM; 1.
DR   InterPro; IPR012595; PetM_cyt_b6/f_cplx_su7.
DR   Pfam; PF08041; PetM; 1.
PE   3: Inferred from homology;
KW   Electron transport; Membrane; Photosynthesis; Reference proteome;
KW   Thylakoid; Transmembrane; Transmembrane helix; Transport.
FT   CHAIN           1..37
FT                   /note="Cytochrome b6-f complex subunit 7"
FT                   /id="PRO_1000192349"
FT   TRANSMEM        11..29
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00396"
SQ   SEQUENCE   37 AA;  3954 MW;  58C9B8616C4E8FAD CRC64;
     MTAESMMFNG AVLLMVLVLV GLAWGFLLLK IQGGEAE