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Database: UniProt
Entry: Q8KA20
LinkDB: Q8KA20
Original site: Q8KA20 
ID   RNFB_BUCAP              Reviewed;         168 AA.
AC   Q8KA20;
DT   15-NOV-2002, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2002, sequence version 1.
DT   10-APR-2019, entry version 111.
DE   RecName: Full=Ion-translocating oxidoreductase complex subunit B {ECO:0000255|HAMAP-Rule:MF_00463};
DE            EC=7.-.-.- {ECO:0000255|HAMAP-Rule:MF_00463};
DE   AltName: Full=Rnf electron transport complex subunit B {ECO:0000255|HAMAP-Rule:MF_00463};
GN   Name=rnfB {ECO:0000255|HAMAP-Rule:MF_00463};
GN   OrderedLocusNames=BUsg_106;
OS   Buchnera aphidicola subsp. Schizaphis graminum (strain Sg).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Erwiniaceae; Buchnera.
OX   NCBI_TaxID=198804;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Sg;
RX   PubMed=12089438; DOI=10.1126/science.1071278;
RA   Tamas I., Klasson L., Canbaeck B., Naeslund A.K., Eriksson A.-S.,
RA   Wernegreen J.J., Sandstroem J.P., Moran N.A., Andersson S.G.E.;
RT   "50 million years of genomic stasis in endosymbiotic bacteria.";
RL   Science 296:2376-2379(2002).
CC   -!- FUNCTION: Part of a membrane-bound complex that couples electron
CC       transfer with translocation of ions across the membrane.
CC       {ECO:0000255|HAMAP-Rule:MF_00463}.
CC   -!- COFACTOR:
CC       Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00463};
CC       Note=Binds 3 [4Fe-4S] clusters. {ECO:0000255|HAMAP-Rule:MF_00463};
CC   -!- SUBUNIT: The complex is composed of six subunits: RnfA, RnfB,
CC       RnfC, RnfD, RnfE and RnfG. {ECO:0000255|HAMAP-Rule:MF_00463}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC       Rule:MF_00463}.
CC   -!- SIMILARITY: Belongs to the 4Fe4S bacterial-type ferredoxin family.
CC       RnfB subfamily. {ECO:0000255|HAMAP-Rule:MF_00463}.
DR   EMBL; AE013218; AAM67676.1; -; Genomic_DNA.
DR   RefSeq; WP_011053642.1; NC_004061.1.
DR   ProteinModelPortal; Q8KA20; -.
DR   SMR; Q8KA20; -.
DR   STRING; 198804.BUsg_106; -.
DR   EnsemblBacteria; AAM67676; AAM67676; BUsg_106.
DR   KEGG; bas:BUsg_106; -.
DR   eggNOG; ENOG4108R3D; Bacteria.
DR   eggNOG; COG2878; LUCA.
DR   KO; K03616; -.
DR   OMA; CIDMLPV; -.
DR   OrthoDB; 1619561at2; -.
DR   BioCyc; BAPH198804:G1FZU-118-MONOMER; -.
DR   Proteomes; UP000000416; Chromosome.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0009055; F:electron transfer activity; IEA:InterPro.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   Gene3D; 3.20.20.20; -; 1.
DR   HAMAP; MF_00463; RsxB_RnfB; 1.
DR   InterPro; IPR007202; 4Fe-4S_dom.
DR   InterPro; IPR017896; 4Fe4S_Fe-S-bd.
DR   InterPro; IPR017900; 4Fe4S_Fe_S_CS.
DR   InterPro; IPR011005; Dihydropteroate_synth-like.
DR   InterPro; IPR010207; Elect_transpt_cplx_RnfB/RsxB.
DR   InterPro; IPR016463; RnfB/RsxB_Proteobac.
DR   PANTHER; PTHR42859:SF3; PTHR42859:SF3; 1.
DR   Pfam; PF04060; FeS; 1.
DR   PIRSF; PIRSF005784; Elect_transpt_RnfB; 1.
DR   TIGRFAMs; TIGR01944; rnfB; 1.
DR   PROSITE; PS51656; 4FE4S; 1.
DR   PROSITE; PS00198; 4FE4S_FER_1; 2.
DR   PROSITE; PS51379; 4FE4S_FER_2; 2.
PE   3: Inferred from homology;
KW   4Fe-4S; Cell inner membrane; Cell membrane; Complete proteome;
KW   Electron transport; Iron; Iron-sulfur; Membrane; Metal-binding;
KW   Repeat; Translocase; Transport.
FT   CHAIN         1    168       Ion-translocating oxidoreductase complex
FT                                subunit B.
FT                                /FTId=PRO_0000216269.
FT   DOMAIN       30     89       4Fe-4S. {ECO:0000255|HAMAP-
FT                                Rule:MF_00463}.
FT   DOMAIN      109    138       4Fe-4S ferredoxin-type 1.
FT                                {ECO:0000255|HAMAP-Rule:MF_00463}.
FT   DOMAIN      139    168       4Fe-4S ferredoxin-type 2.
FT                                {ECO:0000255|HAMAP-Rule:MF_00463}.
FT   REGION        1     24       Hydrophobic. {ECO:0000255|HAMAP-
FT                                Rule:MF_00463}.
FT   METAL        47     47       Iron-sulfur 1 (4Fe-4S).
FT                                {ECO:0000255|HAMAP-Rule:MF_00463}.
FT   METAL        50     50       Iron-sulfur 1 (4Fe-4S).
FT                                {ECO:0000255|HAMAP-Rule:MF_00463}.
FT   METAL        55     55       Iron-sulfur 1 (4Fe-4S).
FT                                {ECO:0000255|HAMAP-Rule:MF_00463}.
FT   METAL        72     72       Iron-sulfur 1 (4Fe-4S).
FT                                {ECO:0000255|HAMAP-Rule:MF_00463}.
FT   METAL       118    118       Iron-sulfur 2 (4Fe-4S).
FT                                {ECO:0000255|HAMAP-Rule:MF_00463}.
FT   METAL       121    121       Iron-sulfur 2 (4Fe-4S).
FT                                {ECO:0000255|HAMAP-Rule:MF_00463}.
FT   METAL       124    124       Iron-sulfur 2 (4Fe-4S).
FT                                {ECO:0000255|HAMAP-Rule:MF_00463}.
FT   METAL       128    128       Iron-sulfur 3 (4Fe-4S).
FT                                {ECO:0000255|HAMAP-Rule:MF_00463}.
FT   METAL       148    148       Iron-sulfur 3 (4Fe-4S).
FT                                {ECO:0000255|HAMAP-Rule:MF_00463}.
FT   METAL       151    151       Iron-sulfur 3 (4Fe-4S).
FT                                {ECO:0000255|HAMAP-Rule:MF_00463}.
FT   METAL       154    154       Iron-sulfur 3 (4Fe-4S).
FT                                {ECO:0000255|HAMAP-Rule:MF_00463}.
FT   METAL       158    158       Iron-sulfur 2 (4Fe-4S).
FT                                {ECO:0000255|HAMAP-Rule:MF_00463}.
SQ   SEQUENCE   168 AA;  18626 MW;  D7D6EEEBFD9D9122 CRC64;
     MSITIILIFS ILSFLLGIIL SYVKYIFPIK KNSIIAEVDD LLPQSQCAQC GYSGCYPYAK
     AIVKNNENID KCIPGGNNLK FKIAKVLNIK NIKYSLDNLN AKNEKNIHTT VLIDEKNCVG
     CSKCASFCPV DAIIGTPNFM HTVLQKFCTG CNICLLHCPT NCIKIIKE
//
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