ID   PETM_SPIOL              Reviewed;          36 AA.
AC   P80883;
DT   16-AUG-2004, integrated into UniProtKB/Swiss-Prot.
DT   16-AUG-2004, sequence version 1.
DT   25-MAY-2022, entry version 48.
DE   RecName: Full=Cytochrome b6-f complex subunit 7;
DE   AltName: Full=Cytochrome b6-f complex subunit PetM;
DE   AltName: Full=Cytochrome b6-f complex subunit VII;
DE   Flags: Fragment;
GN   Name=petM {ECO:0000303|Ref.1};
OS   Spinacia oleracea (Spinach).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   Caryophyllales; Chenopodiaceae; Chenopodioideae; Anserineae; Spinacia.
OX   NCBI_TaxID=3562;
RN   [1] {ECO:0000305}
RP   PROTEIN SEQUENCE.
RA   Kuegler M., Kruft V., Schmitz U.K., Braun H.-P.;
RT   "Molecular characterization of the PetM subunit of the chloroplast b6f
RT   complex from higher plants.";
RL   Submitted (JAN-1997) to UniProtKB.
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:0000250}.
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 (By similarity). {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000250}; Single-pass membrane protein {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the PetM family. {ECO:0000305}.
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DR   PDB; 6RQF; EM; 3.58 A; F/N=1-36.
DR   PDBsum; 6RQF; -.
DR   AlphaFoldDB; P80883; -.
DR   SMR; P80883; -.
DR   IntAct; P80883; 1.
DR   GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
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: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   1: Evidence at protein level;
KW   3D-structure; Chloroplast; Direct protein sequencing; Electron transport;
KW   Membrane; Photosynthesis; Plastid; Thylakoid; Transmembrane;
KW   Transmembrane helix; Transport.
FT   CHAIN           1..>36
FT                   /note="Cytochrome b6-f complex subunit 7"
FT                   /id="PRO_0000218019"
FT   TOPO_DOM        1..5
FT                   /note="Lumenal"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        6..28
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TOPO_DOM        29..>36
FT                   /note="Stromal"
FT                   /evidence="ECO:0000255"
FT   NON_TER         36
FT                   /evidence="ECO:0000303|Ref.1"
SQ   SEQUENCE   36 AA;  3772 MW;  3CFD042EEDEBF602 CRC64;
     NAAAEIFRIA AVMNGLTLVG VAIGFVLLRI EATVEE