ID   PETD_ARATH              Reviewed;         160 AA.
AC   P56774;
DT   30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT   30-MAY-2000, sequence version 1.
DT   03-AUG-2022, entry version 126.
DE   RecName: Full=Cytochrome b6-f complex subunit 4 {ECO:0000255|HAMAP-Rule:MF_01344};
DE   AltName: Full=17 kDa polypeptide {ECO:0000255|HAMAP-Rule:MF_01344};
GN   Name=petD {ECO:0000255|HAMAP-Rule:MF_01344}; OrderedLocusNames=AtCg00730;
OS   Arabidopsis thaliana (Mouse-ear cress).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   rosids; malvids; Brassicales; Brassicaceae; Camelineae; Arabidopsis.
OX   NCBI_TaxID=3702;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Columbia;
RX   PubMed=10574454; DOI=10.1093/dnares/6.5.283;
RA   Sato S., Nakamura Y., Kaneko T., Asamizu E., Tabata S.;
RT   "Complete structure of the chloroplast genome of Arabidopsis thaliana.";
RL   DNA Res. 6:283-290(1999).
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_01344}.
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:0000255|HAMAP-Rule:MF_01344}; Multi-pass membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_01344}.
CC   -!- SIMILARITY: Belongs to the cytochrome b family. PetD subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_01344}.
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DR   EMBL; AP000423; BAA84416.1; -; Genomic_DNA.
DR   RefSeq; NP_051089.1; NC_000932.1.
DR   AlphaFoldDB; P56774; -.
DR   SMR; P56774; -.
DR   BioGRID; 29934; 2.
DR   STRING; 3702.ATCG00730.1; -.
DR   TCDB; 3.D.3.5.2; the proton-translocating quinol:cytochrome c reductase (qcr) superfamily.
DR   PaxDb; P56774; -.
DR   PRIDE; P56774; -.
DR   ProteomicsDB; 236699; -.
DR   EnsemblPlants; ATCG00730.1; ATCG00730.1; ATCG00730.
DR   GeneID; 844728; -.
DR   Gramene; ATCG00730.1; ATCG00730.1; ATCG00730.
DR   KEGG; ath:ArthCp054; -.
DR   Araport; ATCG00730; -.
DR   TAIR; locus:504954696; ATCG00730.
DR   eggNOG; KOG4663; Eukaryota.
DR   HOGENOM; CLU_112652_0_0_1; -.
DR   InParanoid; P56774; -.
DR   OMA; KKGMGHN; -.
DR   OrthoDB; 1125966at2759; -.
DR   PRO; PR:P56774; -.
DR   Proteomes; UP000006548; Chloroplast.
DR   ExpressionAtlas; P56774; baseline and differential.
DR   Genevisible; P56774; AT.
DR   GO; GO:0009507; C:chloroplast; HDA:TAIR.
DR   GO; GO:0009534; C:chloroplast thylakoid; HDA:TAIR.
DR   GO; GO:0009535; C:chloroplast thylakoid membrane; HDA:TAIR.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0009536; C:plastid; HDA:TAIR.
DR   GO; GO:0009579; C:thylakoid; HDA:TAIR.
DR   GO; GO:0045158; F:electron transporter, transferring electrons within cytochrome b6/f complex of photosystem II activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0045156; F:electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity; IEA:InterPro.
DR   GO; GO:0009767; P:photosynthetic electron transport chain; IEA:InterPro.
DR   CDD; cd00290; cytochrome_b_C; 1.
DR   HAMAP; MF_01344; Cytb6_f_subIV; 1.
DR   InterPro; IPR005798; Cyt_b/b6_C.
DR   InterPro; IPR036150; Cyt_b/b6_C_sf.
DR   InterPro; IPR005870; Cyt_b6/f_cplx_suIV.
DR   Pfam; PF00032; Cytochrom_B_C; 1.
DR   PIRSF; PIRSF000033; B6f_17K; 1.
DR   SUPFAM; SSF81648; SSF81648; 1.
DR   TIGRFAMs; TIGR01156; cytb6/f_IV; 1.
DR   PROSITE; PS51003; CYTB_CTER; 1.
PE   3: Inferred from homology;
KW   Chloroplast; Electron transport; Membrane; Photosynthesis; Plastid;
KW   Reference proteome; Thylakoid; Transmembrane; Transmembrane helix;
KW   Transport.
FT   CHAIN           1..160
FT                   /note="Cytochrome b6-f complex subunit 4"
FT                   /id="PRO_0000061846"
FT   TRANSMEM        36..56
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01344"
FT   TRANSMEM        95..115
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01344"
FT   TRANSMEM        131..151
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01344"
SQ   SEQUENCE   160 AA;  17431 MW;  F8A3275B4D4393E0 CRC64;
     MGVTKKPDLN DPVLRAKLAK GMGHNYYGEP AWPNDLLYIF PVVILGTIAC NVGLAVLEPS
     MIGEPADPFA TPLEILPEWY FFPVFQILRT VPNKLLGVLL MVSVPAGLLT VPFLENVNKF
     QNPFRRPVAT TVFLIGTAAA LWLGIGATLP IDKSLTLGLF