ID K9TGV8_9CYAN Unreviewed; 160 AA.
AC K9TGV8;
DT 06-MAR-2013, integrated into UniProtKB/TrEMBL.
DT 06-MAR-2013, sequence version 1.
DT 27-MAR-2024, entry version 45.
DE RecName: Full=Cytochrome b6-f complex subunit 4 {ECO:0000256|HAMAP-Rule:MF_01344, ECO:0000256|RuleBase:RU003329};
DE AltName: Full=17 kDa polypeptide {ECO:0000256|HAMAP-Rule:MF_01344};
GN Name=petD {ECO:0000256|HAMAP-Rule:MF_01344};
GN ORFNames=Oscil6304_1974 {ECO:0000313|EMBL:AFY81643.1};
OS Oscillatoria acuminata PCC 6304.
OC Bacteria; Cyanobacteriota; Cyanophyceae; Oscillatoriophycideae;
OC Oscillatoriales; Oscillatoriaceae; Oscillatoria.
OX NCBI_TaxID=56110 {ECO:0000313|EMBL:AFY81643.1, ECO:0000313|Proteomes:UP000010367};
RN [1] {ECO:0000313|EMBL:AFY81643.1, ECO:0000313|Proteomes:UP000010367}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=PCC 6304 {ECO:0000313|EMBL:AFY81643.1,
RC ECO:0000313|Proteomes:UP000010367};
RG US DOE Joint Genome Institute;
RA Gugger M., Coursin T., Rippka R., Tandeau De Marsac N., Huntemann M.,
RA Wei C.-L., Han J., Detter J.C., Han C., Tapia R., Davenport K.,
RA Daligault H., Erkkila T., Gu W., Munk A.C.C., Teshima H., Xu Y., Chain P.,
RA Chen A., Krypides N., Mavromatis K., Markowitz V., Szeto E., Ivanova N.,
RA Mikhailova N., Ovchinnikova G., Pagani I., Pati A., Goodwin L., Peters L.,
RA Pitluck S., Woyke T., Kerfeld C.;
RT "Finished chromosome of genome of Oscillatoria acuminata PCC 6304.";
RL Submitted (JUN-2012) 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.
CC {ECO:0000256|HAMAP-Rule:MF_01344, ECO:0000256|RuleBase:RU003329}.
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:0000256|ARBA:ARBA00025834,
CC ECO:0000256|HAMAP-Rule:MF_01344, ECO:0000256|RuleBase:RU003329}.
CC -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000256|HAMAP-
CC Rule:MF_01344}; Multi-pass membrane protein {ECO:0000256|HAMAP-
CC Rule:MF_01344}. Membrane {ECO:0000256|ARBA:ARBA00004141}; Multi-pass
CC membrane protein {ECO:0000256|ARBA:ARBA00004141}.
CC -!- SIMILARITY: Belongs to the cytochrome b family. PetD subfamily.
CC {ECO:0000256|HAMAP-Rule:MF_01344, ECO:0000256|RuleBase:RU003329}.
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DR EMBL; CP003607; AFY81643.1; -; Genomic_DNA.
DR RefSeq; WP_015148287.1; NC_019693.1.
DR AlphaFoldDB; K9TGV8; -.
DR STRING; 56110.Oscil6304_1974; -.
DR KEGG; oac:Oscil6304_1974; -.
DR PATRIC; fig|56110.3.peg.2353; -.
DR eggNOG; COG1290; Bacteria.
DR HOGENOM; CLU_112652_0_0_3; -.
DR InParanoid; K9TGV8; -.
DR OrthoDB; 529454at2; -.
DR Proteomes; UP000010367; Chromosome.
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 Gene3D; 1.10.287.980; plastocyanin oxidoreductase; 1.
DR Gene3D; 1.20.5.510; Single helix bin; 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 InterPro; IPR048260; Cytochrome_b_C_euk/bac.
DR NCBIfam; TIGR01156; cytb6_f_IV; 1.
DR PANTHER; PTHR19271; CYTOCHROME B; 1.
DR PANTHER; PTHR19271:SF16; CYTOCHROME B; 1.
DR Pfam; PF00032; Cytochrom_B_C; 1.
DR PIRSF; PIRSF000033; B6f_17K; 1.
DR SUPFAM; SSF81648; a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase); 1.
DR PROSITE; PS51003; CYTB_CTER; 1.
PE 3: Inferred from homology;
KW Electron transport {ECO:0000256|ARBA:ARBA00022982, ECO:0000256|HAMAP-
KW Rule:MF_01344};
KW Membrane {ECO:0000256|ARBA:ARBA00023136, ECO:0000256|HAMAP-Rule:MF_01344};
KW Photosynthesis {ECO:0000256|ARBA:ARBA00022531, ECO:0000256|HAMAP-
KW Rule:MF_01344}; Reference proteome {ECO:0000313|Proteomes:UP000010367};
KW Thylakoid {ECO:0000256|ARBA:ARBA00023078, ECO:0000256|HAMAP-Rule:MF_01344};
KW Transmembrane {ECO:0000256|ARBA:ARBA00022692, ECO:0000256|HAMAP-
KW Rule:MF_01344};
KW Transmembrane helix {ECO:0000256|ARBA:ARBA00022989, ECO:0000256|HAMAP-
KW Rule:MF_01344};
KW Transport {ECO:0000256|ARBA:ARBA00022448, ECO:0000256|HAMAP-Rule:MF_01344}.
FT TRANSMEM 36..57
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01344"
FT TRANSMEM 95..115
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01344"
FT TRANSMEM 127..151
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01344"
FT DOMAIN 65..160
FT /note="Cytochrome b/b6 C-terminal region profile"
FT /evidence="ECO:0000259|PROSITE:PS51003"
SQ SEQUENCE 160 AA; 17596 MW; 4B9AC2E6E1C91ABD CRC64;
MSILKKPDLS DPKLRAKLAM GMGHNYYGEP AWPNDLLYVF PVVILGTIAL CVGLGVLDPA
MVGEPADPFA TPLEILPEWY LWPSFQMLRV VPNKLLGIAL MGAIPVGLMV IPFIENVNKF
QNPFRRPLAT AVFLFGTLFT IWLGVGAIMP IDKSLTLGLF
//
