PETD_HORVU
ID PETD_HORVU Reviewed; 160 AA.
AC P12361; A1E9M1;
DT 01-OCT-1989, integrated into UniProtKB/Swiss-Prot.
DT 20-FEB-2007, sequence version 4.
DT 25-MAY-2022, entry version 120.
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 Hordeum vulgare (Barley).
OG Plastid; Chloroplast.
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Magnoliopsida; Liliopsida; Poales; Poaceae; BOP clade;
OC Pooideae; Triticodae; Triticeae; Hordeinae; Hordeum.
OX NCBI_TaxID=4513;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=cv. Morex;
RX PubMed=17534593; DOI=10.1007/s00122-007-0567-4;
RA Saski C., Lee S.-B., Fjellheim S., Guda C., Jansen R.K., Luo H.,
RA Tomkins J., Rognli O.A., Daniell H., Clarke J.L.;
RT "Complete chloroplast genome sequences of Hordeum vulgare, Sorghum bicolor
RT and Agrostis stolonifera, and comparative analyses with other grass
RT genomes.";
RL Theor. Appl. Genet. 115:571-590(2007).
RN [2]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 1-92 (ISOFORMS LONG AND SHORT).
RC STRAIN=cv. Sabarlis;
RX PubMed=2654887; DOI=10.1093/nar/17.7.2859;
RA Andreeva A.V., Buryakova A.A., Reverdatto S.V., Chakhmakhcheva O.G.,
RA Efimov V.A.;
RT "Nucleotide sequence of the 5.2 kbp barley chloroplast DNA fragment,
RT containing psbB-psbH-petB-petD gene cluster.";
RL Nucleic Acids Res. 17:2859-2860(1989).
RN [3]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 1-92.
RX PubMed=1804121;
RA Efimov V.A., Andreeva A.V., Reverdatto S.V., Chakhmakhcheva O.G.;
RT "Photosystem II of rye. Nucleotide sequence of the psbB, psbC, psbE, psbF,
RT psbH genes of rye and chloroplast DNA regions adjacent to them.";
RL Bioorg. Khim. 17:1369-1385(1991).
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 -!- ALTERNATIVE PRODUCTS:
CC Event=Alternative splicing; Named isoforms=2;
CC Name=Short;
CC IsoId=P12361-2; Sequence=Displayed;
CC Name=Long;
CC IsoId=P12361-1; Sequence=VSP_019381;
CC -!- MISCELLANEOUS: A longer mRNA that is not produced by splicing has been
CC shown to be transcribed in barley and maize. It is not known if this
CC mRNA is translated.
CC -!- SIMILARITY: Belongs to the cytochrome b family. PetD subfamily.
CC {ECO:0000255|HAMAP-Rule:MF_01344}.
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DR EMBL; EF115541; ABK79442.1; -; Genomic_DNA.
DR EMBL; X14107; CAA32268.1; ALT_SEQ; Genomic_DNA.
DR EMBL; X14107; CAA32269.1; -; Genomic_DNA.
DR PIR; JN0349; JN0349.
DR PIR; S04150; S04150.
DR RefSeq; YP_874683.1; NC_008590.1.
DR AlphaFoldDB; P12361; -.
DR SMR; P12361; -.
DR PRIDE; P12361; -.
DR GeneID; 4525080; -.
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 Alternative splicing; Chloroplast; Electron transport; Membrane;
KW Photosynthesis; Plastid; Thylakoid; Transmembrane; Transmembrane helix;
KW Transport.
FT CHAIN 1..160
FT /note="Cytochrome b6-f complex subunit 4"
FT /id="PRO_0000061863"
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"
FT VAR_SEQ 1..3
FT /note="MGV -> MSGSFGGWILKSSPIPI (in isoform Long)"
FT /evidence="ECO:0000305"
FT /id="VSP_019381"
SQ SEQUENCE 160 AA; 17517 MW; 8FB6325B4D5B26B7 CRC64;
MGVTKKPDLN DPVLRAKLAK GMGHNYYGEP AWPNDLLYIF PVVILGTIAC NVGLAVLEPS
MIGEPADPFA TPLEILPEWY FFPVFQILRT VPNKLLGVLL MVSVPTGLLT VPFLENVNKF
QNPFRRPVAT TVFLIGTVVA LWLGIGATLP IDKSLTLGLF
