ID   PETL_BETVU              Reviewed;          31 AA.
AC   P46612; Q2Z1Q6; Q5K3T1;
DT   01-NOV-1995, integrated into UniProtKB/Swiss-Prot.
DT   02-MAY-2006, sequence version 2.
DT   25-MAY-2022, entry version 83.
DE   RecName: Full=Cytochrome b6-f complex subunit 6 {ECO:0000255|HAMAP-Rule:MF_00433};
DE   AltName: Full=Cytochrome b6-f complex subunit PetL {ECO:0000255|HAMAP-Rule:MF_00433};
DE   AltName: Full=Cytochrome b6-f complex subunit VI {ECO:0000255|HAMAP-Rule:MF_00433};
GN   Name=petL {ECO:0000255|HAMAP-Rule:MF_00433};
OS   Beta vulgaris (Sugar beet).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   Caryophyllales; Chenopodiaceae; Betoideae; Beta.
OX   NCBI_TaxID=161934;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=cv. Altissima; TISSUE=Leaf;
RA   Ran Z., Michaelis G.;
RT   "Mapping of a chloroplast RFLP marker associated with the CMS cytoplasm of
RT   sugar beet (Beta vulgaris).";
RL   Theor. Appl. Genet. 91:836-840(1995).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=cv. TK81-O; TISSUE=Leaf;
RX   PubMed=7736615; DOI=10.1007/bf00326162;
RA   Kubo T., Yanai Y., Kinoshita T., Mikami T.;
RT   "The chloroplast trnP-trnW-petG gene cluster in the mitochondrial genomes
RT   of Beta vulgaris, B. trigyna and B. webbiana: evolutionary aspects.";
RL   Curr. Genet. 27:285-289(1995).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA], AND RNA EDITING.
RC   TISSUE=Leaf;
RX   PubMed=15240834; DOI=10.1093/nar/gkh695;
RA   Fiebig A., Stegemann S., Bock R.;
RT   "Rapid evolution of RNA editing sites in a small non-essential plastid
RT   gene.";
RL   Nucleic Acids Res. 32:3615-3622(2004).
RN   [4]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=cv. TK81-MS;
RA   Yanai Y., Kubo T., Mikami T.;
RT   "Nucleotide sequence of trnP-CCA-psbL intergenic region showing
RT   organizational alteration between male-fertile and Owen cytoplasmic male
RT   sterile sugar beets.";
RL   Submitted (NOV-2005) 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. PetL is
CC       important for photoautotrophic growth as well as for electron transfer
CC       efficiency and stability of the cytochrome b6-f complex.
CC       {ECO:0000255|HAMAP-Rule:MF_00433}.
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_00433}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000255|HAMAP-Rule:MF_00433}; Single-pass membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_00433}.
CC   -!- RNA EDITING: Modified_positions=2 {ECO:0000269|PubMed:15240834};
CC   -!- SIMILARITY: Belongs to the PetL family. {ECO:0000255|HAMAP-
CC       Rule:MF_00433}.
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DR   EMBL; X87636; CAA60965.1; ALT_SEQ; Genomic_DNA.
DR   EMBL; X87637; CAA60970.1; ALT_SEQ; Genomic_DNA.
DR   EMBL; D38019; BAA07217.1; ALT_SEQ; Genomic_DNA.
DR   EMBL; AJ704433; CAG28645.1; -; Genomic_DNA.
DR   EMBL; AB242560; BAE48704.1; ALT_SEQ; Genomic_DNA.
DR   PIR; T14568; T14568.
DR   AlphaFoldDB; P46612; -.
DR   SMR; P46612; -.
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:0070469; C:respirasome; 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   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; Plastid; Respiratory chain;
KW   RNA editing; Thylakoid; Transmembrane; Transmembrane helix; Transport.
FT   CHAIN           1..31
FT                   /note="Cytochrome b6-f complex subunit 6"
FT                   /id="PRO_0000220439"
FT   TRANSMEM        4..26
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00433"
SQ   SEQUENCE   31 AA;  3416 MW;  BEE4294AF472B493 CRC64;
     MLTLTSYFGF LLAALTITSA LFIGLNKIRL I