PETD_AMPOP
ID PETD_AMPOP Reviewed; 157 AA.
AC Q9MTQ3;
DT 10-JAN-2006, integrated into UniProtKB/Swiss-Prot.
DT 01-OCT-2000, sequence version 1.
DT 03-AUG-2022, entry version 79.
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};
OS Amphidinium operculatum (Dinoflagellate).
OG Plastid; Chloroplast.
OC Eukaryota; Sar; Alveolata; Dinophyceae; Amphidiniales; Amphidiniaceae;
OC Amphidinium.
OX NCBI_TaxID=107036;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=10732684; DOI=10.1007/s004380050042;
RA Barbrook A.C., Howe C.J.;
RT "Minicircular plastid DNA in the dinoflagellate Amphidinium operculatum.";
RL Mol. Gen. Genet. 263:152-158(2000).
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; AJ250265; CAB75845.1; -; Genomic_DNA.
DR AlphaFoldDB; Q9MTQ3; -.
DR SMR; Q9MTQ3; -.
DR GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
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: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 Thylakoid; Transmembrane; Transmembrane helix; Transport.
FT CHAIN 1..157
FT /note="Cytochrome b6-f complex subunit 4"
FT /id="PRO_0000061844"
FT TRANSMEM 35..55
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01344"
FT TRANSMEM 94..114
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01344"
FT TRANSMEM 130..150
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01344"
SQ SEQUENCE 157 AA; 17280 MW; 5FFE21BE54516F93 CRC64;
MVVRLPYVKG SILCSALAKG CGHNYYGEPA WPNDILYIFP VVILGTISFS LGLGVIENQA
IGEPANPFAT PLEILPEWYF FPTFNLLRIL PDKLVGVLSL ASVPVILVLT AFIENINRYQ
NPFRRPVASL VYLTSTCYAL WLGYGSVLGI SEALPFV