ID K9Z9L9_CYAAP Unreviewed; 165 AA.
AC K9Z9L9;
DT 06-MAR-2013, integrated into UniProtKB/TrEMBL.
DT 06-MAR-2013, sequence version 1.
DT 27-MAR-2024, entry version 48.
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 OrderedLocusNames=Cyan10605_3019 {ECO:0000313|EMBL:AFZ55078.1};
OS Cyanobacterium aponinum (strain PCC 10605).
OC Bacteria; Cyanobacteriota; Cyanophyceae; Oscillatoriophycideae;
OC Chroococcales; Geminocystaceae; Cyanobacterium.
OX NCBI_TaxID=755178 {ECO:0000313|EMBL:AFZ55078.1, ECO:0000313|Proteomes:UP000010480};
RN [1] {ECO:0000313|Proteomes:UP000010480}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=PCC 10605 {ECO:0000313|Proteomes:UP000010480};
RX PubMed=23277585; DOI=10.1073/pnas.1217107110;
RA Shih P.M., Wu D., Latifi A., Axen S.D., Fewer D.P., Talla E., Calteau A.,
RA Cai F., Tandeau de Marsac N., Rippka R., Herdman M., Sivonen K.,
RA Coursin T., Laurent T., Goodwin L., Nolan M., Davenport K.W., Han C.S.,
RA Rubin E.M., Eisen J.A., Woyke T., Gugger M., Kerfeld C.A.;
RT "Improving the coverage of the cyanobacterial phylum using diversity-driven
RT genome sequencing.";
RL Proc. Natl. Acad. Sci. U.S.A. 110:1053-1058(2013).
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; CP003947; AFZ55078.1; -; Genomic_DNA.
DR RefSeq; WP_015220797.1; NC_019776.1.
DR AlphaFoldDB; K9Z9L9; -.
DR STRING; 755178.Cyan10605_3019; -.
DR KEGG; can:Cyan10605_3019; -.
DR PATRIC; fig|755178.3.peg.3217; -.
DR eggNOG; COG1290; Bacteria.
DR HOGENOM; CLU_112652_0_0_3; -.
DR OrthoDB; 529454at2; -.
DR Proteomes; UP000010480; 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:UP000010480};
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 41..62
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01344"
FT TRANSMEM 100..119
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01344"
FT TRANSMEM 131..150
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01344"
FT DOMAIN 70..165
FT /note="Cytochrome b/b6 C-terminal region profile"
FT /evidence="ECO:0000259|PROSITE:PS51003"
SQ SEQUENCE 165 AA; 18290 MW; 5681B099238324D8 CRC64;
MSNPNSQLIK KPDLNDPKLR AKLAQNMGHH YYGEIAWPND ILYMFPVCIL GALGLIVGLA
ILDPAMIGEP ADPFATPLEI LPEWYLYPVF QILRILPNKL LGIACQAAIP LGLMLVPFIE
SVNKFQNPFR RPIAMTVFLF GTLVTLWLGA GSVFPIDKSL TLGLF
//
