ID   PETL_CYCTA              Reviewed;          31 AA.
AC   A6H5J7;
DT   11-SEP-2007, integrated into UniProtKB/Swiss-Prot.
DT   24-JUL-2007, sequence version 1.
DT   25-MAY-2022, entry version 44.
DE   RecName: Full=Cytochrome b6-f complex subunit 6;
DE   AltName: Full=Cytochrome b6-f complex subunit PetL;
DE   AltName: Full=Cytochrome b6-f complex subunit VI;
GN   Name=petL;
OS   Cycas taitungensis (Prince sago) (Cycas taiwaniana).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Cycadidae; Cycadales; Cycadaceae; Cycas.
OX   NCBI_TaxID=54799;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA], AND SUGGESTION OF RNA
RP   EDITING.
RX   PubMed=17383970; DOI=10.1093/molbev/msm059;
RA   Wu C.-S., Wang Y.-N., Liu S.-M., Chaw S.-M.;
RT   "Chloroplast genome (cpDNA) of Cycas taitungensis and 56 cp protein-coding
RT   genes of Gnetum parvifolium: insights into cpDNA evolution and phylogeny of
RT   extant seed plants.";
RL   Mol. Biol. Evol. 24:1366-1379(2007).
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. PetL is
CC       important for photoautotrophic growth as well as for electron transfer
CC       efficiency and stability of the cytochrome b6-f complex (By
CC       similarity). {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   -!- RNA EDITING: Modified_positions=1 {ECO:0000305|PubMed:17383970};
CC       Note=The initiator methionine is created by RNA editing.
CC       {ECO:0000305|PubMed:17383970};
CC   -!- SIMILARITY: Belongs to the PetL family. {ECO:0000305}.
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DR   EMBL; AP009339; BAF64963.1; -; Genomic_DNA.
DR   RefSeq; YP_001312222.1; NC_009618.1.
DR   AlphaFoldDB; A6H5J7; -.
DR   SMR; A6H5J7; -.
DR   GeneID; 5309610; -.
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:0045158; F:electron transporter, transferring electrons within cytochrome b6/f complex of photosystem II activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-KW.
DR   HAMAP; MF_00433; Cytb6_f_PetL; 1.
DR   InterPro; IPR007802; Cyt_b6/f_cplx_su6.
DR   PANTHER; PTHR37266; PTHR37266; 1.
DR   Pfam; PF05115; PetL; 1.
PE   2: Evidence at transcript level;
KW   Chloroplast; Electron transport; Membrane; Photosynthesis; Plastid;
KW   RNA editing; Thylakoid; Transmembrane; Transmembrane helix; Transport.
FT   CHAIN           1..31
FT                   /note="Cytochrome b6-f complex subunit 6"
FT                   /id="PRO_0000300141"
FT   TRANSMEM        4..24
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   31 AA;  3435 MW;  83BA28AFBC889B36 CRC64;
     MPTITSYFGF LLASLIFTLA LFIGSSKIRL L