ID   PETM_SKECO              Reviewed;          25 AA.
AC   O96810;
DT   01-JUN-2001, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-1999, sequence version 1.
DT   03-AUG-2022, entry version 62.
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; Synonyms=ycf31;
OS   Skeletonema costatum (Marine centric diatom) (Melosira costata).
OG   Plastid; Chloroplast.
OC   Eukaryota; Sar; Stramenopiles; Ochrophyta; Bacillariophyta;
OC   Coscinodiscophyceae; Thalassiosirophycidae; Thalassiosirales;
OC   Skeletonemataceae; Skeletonema.
OX   NCBI_TaxID=2843;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=NIES-323 / Sk-85w;
RA   Tada N., Otsuka S., Oyaizu H., Matsumoto S.;
RT   "Plastid DNA sequences of Skeletonema costatum NIES 323.";
RL   Submitted (JAN-1999) to the EMBL/GenBank/DDBJ databases.
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   EMBL; AJ132266; CAA10631.1; -; Genomic_DNA.
DR   AlphaFoldDB; O96810; -.
DR   SMR; O96810; -.
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   InterPro; IPR012595; PetM_cyt_b6/f_cplx_su7.
DR   Pfam; PF08041; PetM; 1.
PE   3: Inferred from homology;
KW   Chloroplast; Electron transport; Membrane; Photosynthesis; Plastid;
KW   Thylakoid; Transmembrane; Transmembrane helix; Transport.
FT   CHAIN           <1..25
FT                   /note="Cytochrome b6-f complex subunit 7"
FT                   /id="PRO_0000218013"
FT   TRANSMEM        2..22
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   NON_TER         1
SQ   SEQUENCE   25 AA;  2630 MW;  99ECF1B6CA3113AA CRC64;
     AAVTCIFMTL FGLSLGFALL KVQGE