PETD_NOSS1
ID PETD_NOSS1 Reviewed; 160 AA.
AC Q93SX1;
DT 10-JAN-2006, integrated into UniProtKB/Swiss-Prot.
DT 01-DEC-2001, sequence version 1.
DT 25-MAY-2022, entry version 113.
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=alr3422;
OS Nostoc sp. (strain PCC 7120 / SAG 25.82 / UTEX 2576).
OC Bacteria; Cyanobacteria; Nostocales; Nostocaceae; Nostoc.
OX NCBI_TaxID=103690;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA Arnold M.;
RT "b6f complex of Anabaena sp.";
RL Submitted (MAY-2001) to the EMBL/GenBank/DDBJ databases.
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=PCC 7120 / SAG 25.82 / UTEX 2576;
RX PubMed=11759840; DOI=10.1093/dnares/8.5.205;
RA Kaneko T., Nakamura Y., Wolk C.P., Kuritz T., Sasamoto S., Watanabe A.,
RA Iriguchi M., Ishikawa A., Kawashima K., Kimura T., Kishida Y., Kohara M.,
RA Matsumoto M., Matsuno A., Muraki A., Nakazaki N., Shimpo S., Sugimoto M.,
RA Takazawa M., Yamada M., Yasuda M., Tabata S.;
RT "Complete genomic sequence of the filamentous nitrogen-fixing
RT cyanobacterium Anabaena sp. strain PCC 7120.";
RL DNA Res. 8:205-213(2001).
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. {ECO:0000255|HAMAP-
CC Rule:MF_01344}.
CC -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000255|HAMAP-
CC Rule:MF_01344}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC 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; AJ319645; CAC39603.1; -; Genomic_DNA.
DR EMBL; BA000019; BAB75121.1; -; Genomic_DNA.
DR PIR; AG2233; AG2233.
DR RefSeq; WP_010997572.1; NZ_RSCN01000015.1.
DR PDB; 2ZT9; X-ray; 3.00 A; B=1-160.
DR PDB; 4H44; X-ray; 2.70 A; B=1-160.
DR PDB; 4OGQ; X-ray; 2.50 A; B=1-160.
DR PDBsum; 2ZT9; -.
DR PDBsum; 4H44; -.
DR PDBsum; 4OGQ; -.
DR AlphaFoldDB; Q93SX1; -.
DR SMR; Q93SX1; -.
DR DIP; DIP-61001N; -.
DR IntAct; Q93SX1; 1.
DR STRING; 103690.17132555; -.
DR TCDB; 3.D.3.5.6; the proton-translocating quinol:cytochrome c reductase (qcr) superfamily.
DR EnsemblBacteria; BAB75121; BAB75121; BAB75121.
DR KEGG; ana:alr3422; -.
DR eggNOG; COG1290; Bacteria.
DR OMA; KKGMGHN; -.
DR OrthoDB; 1414927at2; -.
DR EvolutionaryTrace; Q93SX1; -.
DR Proteomes; UP000002483; Chromosome.
DR GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR GO; GO:0031676; C:plasma membrane-derived thylakoid membrane; IEA:UniProtKB-SubCell.
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 1: Evidence at protein level;
KW 3D-structure; Electron transport; Membrane; Photosynthesis;
KW Reference proteome; Thylakoid; Transmembrane; Transmembrane helix;
KW Transport.
FT CHAIN 1..160
FT /note="Cytochrome b6-f complex subunit 4"
FT /id="PRO_0000061898"
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 HELIX 12..19
FT /evidence="ECO:0007829|PDB:4OGQ"
FT STRAND 26..30
FT /evidence="ECO:0007829|PDB:4OGQ"
FT HELIX 31..35
FT /evidence="ECO:0007829|PDB:4OGQ"
FT TURN 36..39
FT /evidence="ECO:0007829|PDB:4OGQ"
FT HELIX 40..57
FT /evidence="ECO:0007829|PDB:4OGQ"
FT HELIX 79..81
FT /evidence="ECO:0007829|PDB:4OGQ"
FT HELIX 82..90
FT /evidence="ECO:0007829|PDB:4OGQ"
FT HELIX 94..115
FT /evidence="ECO:0007829|PDB:4OGQ"
FT HELIX 123..125
FT /evidence="ECO:0007829|PDB:4OGQ"
FT HELIX 127..147
FT /evidence="ECO:0007829|PDB:4OGQ"
FT HELIX 151..153
FT /evidence="ECO:0007829|PDB:4OGQ"
FT TURN 154..156
FT /evidence="ECO:0007829|PDB:4OGQ"
SQ SEQUENCE 160 AA; 17536 MW; B76DEE67186C56A2 CRC64;
MATHKKPDLS DPTLRAKLAK GMGHNYYGEP AWPNDLLYVF PIVIMGSFAC IVALAVLDPA
MTGEPANPFA TPLEILPEWY LYPVFQILRS LPNKLLGVLA MASVPLGLIL VPFIENVNKF
QNPFRRPVAT TVFLFGTLVT LWLGIGAALP LDKSLTLGLF
