(data stored in ACNUC7421 zone)

SWISSPROT: Q3KKF8_PSEPF

ID   Q3KKF8_PSEPF            Unreviewed;       805 AA.
AC   Q3KKF8;
DT   08-NOV-2005, integrated into UniProtKB/TrEMBL.
DT   08-NOV-2005, sequence version 1.
DT   08-MAY-2019, entry version 125.
DE   RecName: Full=DNA gyrase subunit B {ECO:0000256|HAMAP-Rule:MF_01898};
DE            EC=5.6.2.3 {ECO:0000256|HAMAP-Rule:MF_01898};
GN   Name=gyrB {ECO:0000256|HAMAP-Rule:MF_01898,
GN   ECO:0000313|EMBL:ABA71748.1};
GN   OrderedLocusNames=Pfl01_0004 {ECO:0000313|EMBL:ABA71748.1};
OS   Pseudomonas fluorescens (strain Pf0-1).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Pseudomonadales;
OC   Pseudomonadaceae; Pseudomonas.
OX   NCBI_TaxID=205922 {ECO:0000313|EMBL:ABA71748.1, ECO:0000313|Proteomes:UP000002704};
RN   [1] {ECO:0000313|EMBL:ABA71748.1, ECO:0000313|Proteomes:UP000002704}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Pf0-1 {ECO:0000313|EMBL:ABA71748.1,
RC   ECO:0000313|Proteomes:UP000002704};
RX   PubMed=19432983; DOI=10.1186/gb-2009-10-5-r51;
RA   Silby M.W., Cerdeno-Tarraga A.M., Vernikos G.S., Giddens S.R.,
RA   Jackson R.W., Preston G.M., Zhang X.X., Moon C.D., Gehrig S.M.,
RA   Godfrey S.A., Knight C.G., Malone J.G., Robinson Z., Spiers A.J.,
RA   Harris S., Challis G.L., Yaxley A.M., Harris D., Seeger K., Murphy L.,
RA   Rutter S., Squares R., Quail M.A., Saunders E., Mavromatis K.,
RA   Brettin T.S., Bentley S.D., Hothersall J., Stephens E., Thomas C.M.,
RA   Parkhill J., Levy S.B., Rainey P.B., Thomson N.R.;
RT   "Genomic and genetic analyses of diversity and plant interactions of
RT   Pseudomonas fluorescens.";
RL   Genome Biol. 10:R51.1-R51.16(2009).
CC   -!- FUNCTION: A type II topoisomerase that negatively supercoils
CC       closed circular double-stranded (ds) DNA in an ATP-dependent
CC       manner to modulate DNA topology and maintain chromosomes in an
CC       underwound state. Negative supercoiling favors strand separation,
CC       and DNA replication, transcription, recombination and repair, all
CC       of which involve strand separation. Also able to catalyze the
CC       interconversion of other topological isomers of dsDNA rings,
CC       including catenanes and knotted rings. Type II topoisomerases
CC       break and join 2 DNA strands simultaneously in an ATP-dependent
CC       manner. {ECO:0000256|HAMAP-Rule:MF_01898}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP-dependent breakage, passage and rejoining of double-
CC         stranded DNA.; EC=5.6.2.3; Evidence={ECO:0000256|HAMAP-
CC         Rule:MF_01898, ECO:0000256|SAAS:SAAS01180974};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000256|SAAS:SAAS00924966};
CC   -!- COFACTOR:
CC       Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC         Evidence={ECO:0000256|SAAS:SAAS00888357};
CC   -!- SUBUNIT: Heterotetramer, composed of two GyrA and two GyrB chains.
CC       In the heterotetramer, GyrA contains the active site tyrosine that
CC       forms a transient covalent intermediate with DNA, while GyrB binds
CC       cofactors and catalyzes ATP hydrolysis. {ECO:0000256|HAMAP-
CC       Rule:MF_01898}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_01898}.
CC   -!- MISCELLANEOUS: Few gyrases are as efficient as E.coli at forming
CC       negative supercoils. Not all organisms have 2 type II
CC       topoisomerases; in organisms with a single type II topoisomerase
CC       this enzyme also has to decatenate newly replicated chromosomes.
CC       {ECO:0000256|HAMAP-Rule:MF_01898}.
CC   -!- SIMILARITY: Belongs to the type II topoisomerase family.
CC       {ECO:0000256|HAMAP-Rule:MF_01898}.
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DR   EMBL; CP000094; ABA71748.1; -; Genomic_DNA.
DR   RefSeq; WP_011331734.1; NC_007492.2.
DR   STRING; 205922.Pfl01_0004; -.
DR   EnsemblBacteria; ABA71748; ABA71748; Pfl01_0004.
DR   KEGG; pfo:Pfl01_0004; -.
DR   eggNOG; ENOG4105C7D; Bacteria.
DR   eggNOG; COG0187; LUCA.
DR   HOGENOM; HOG000075155; -.
DR   KO; K02470; -.
DR   OMA; IYIACPP; -.
DR   BioCyc; PFLU205922:G1G4S-4-MONOMER; -.
DR   Proteomes; UP000002704; Chromosome.
DR   GO; GO:0005694; C:chromosome; IEA:InterPro.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0003918; F:DNA topoisomerase type II (ATP-hydrolyzing) activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0006265; P:DNA topological change; IEA:UniProtKB-UniRule.
DR   GO; GO:0006261; P:DNA-dependent DNA replication; IEA:UniProtKB-UniRule.
DR   CDD; cd00075; HATPase_c; 1.
DR   CDD; cd03366; TOPRIM_TopoIIA_GyrB; 1.
DR   Gene3D; 3.30.230.10; -; 1.
DR   Gene3D; 3.30.565.10; -; 1.
DR   Gene3D; 3.40.50.670; -; 2.
DR   HAMAP; MF_01898; GyrB; 1.
DR   InterPro; IPR002288; DNA_gyrase_B_C.
DR   InterPro; IPR011557; GyrB.
DR   InterPro; IPR041423; GyrB_insert.
DR   InterPro; IPR003594; HATPase_C.
DR   InterPro; IPR036890; HATPase_C_sf.
DR   InterPro; IPR020568; Ribosomal_S5_D2-typ_fold.
DR   InterPro; IPR014721; Ribosomal_S5_D2-typ_fold_subgr.
DR   InterPro; IPR001241; Topo_IIA.
DR   InterPro; IPR013760; Topo_IIA-like_dom_sf.
DR   InterPro; IPR013759; Topo_IIA_B_C.
DR   InterPro; IPR013506; Topo_IIA_bsu_dom2.
DR   InterPro; IPR018522; TopoIIA_CS.
DR   InterPro; IPR006171; TOPRIM_domain.
DR   InterPro; IPR034160; TOPRIM_GyrB.
DR   Pfam; PF00204; DNA_gyraseB; 1.
DR   Pfam; PF00986; DNA_gyraseB_C; 1.
DR   Pfam; PF18053; GyrB_insert; 1.
DR   Pfam; PF02518; HATPase_c; 1.
DR   Pfam; PF01751; Toprim; 1.
DR   SMART; SM00387; HATPase_c; 1.
DR   SMART; SM00433; TOP2c; 1.
DR   SUPFAM; SSF54211; SSF54211; 1.
DR   SUPFAM; SSF55874; SSF55874; 1.
DR   SUPFAM; SSF56719; SSF56719; 1.
DR   TIGRFAMs; TIGR01059; gyrB; 1.
DR   PROSITE; PS00177; TOPOISOMERASE_II; 1.
DR   PROSITE; PS50880; TOPRIM; 1.
PE   3: Inferred from homology;
DR   PRODOM; Q3KKF8.
DR   SWISS-2DPAGE; Q3KKF8.
KW   ATP-binding {ECO:0000256|HAMAP-Rule:MF_01898,
KW   ECO:0000256|SAAS:SAAS00924926};
KW   Complete proteome {ECO:0000313|Proteomes:UP000002704};
KW   Cytoplasm {ECO:0000256|HAMAP-Rule:MF_01898};
KW   DNA-binding {ECO:0000256|SAAS:SAAS00888349};
KW   Isomerase {ECO:0000256|HAMAP-Rule:MF_01898,
KW   ECO:0000256|SAAS:SAAS00924998, ECO:0000313|EMBL:ABA71748.1};
KW   Magnesium {ECO:0000256|SAAS:SAAS00906748};
KW   Metal-binding {ECO:0000256|SAAS:SAAS00906804};
KW   Nucleotide-binding {ECO:0000256|HAMAP-Rule:MF_01898,
KW   ECO:0000256|SAAS:SAAS00924952};
KW   Topoisomerase {ECO:0000256|HAMAP-Rule:MF_01898,
KW   ECO:0000256|SAAS:SAAS00924964}.
FT   DOMAIN      419    534       Toprim. {ECO:0000259|PROSITE:PS50880}.
SQ   SEQUENCE   805 AA;  90133 MW;  52A787F5AC8315DB CRC64;
     MSEENTYDSS SIKVLKGLDA VRKRPGMYIG DTDDGSGLHH MVFEVVDNSI DEALAGHCDD
     ISIIIHPDES ITVKDNGRGI PVDVHKEEGV SAAEVIMTVL HAGGKFDDNS YKVSGGLHGV
     GVSVVNALSE ELVLTVRRSG KIWEQTYVHG VPQAPMAIVG DSETTGTQIH FKASSETFKN
     IHFSWDILAK RIRELSFLNS GVGIVLKDER SGKEELFKYE GGLRAFVEYL NTNKTAVNQV
     FHFNIQREDG IGVEIALQWN DSFNENLLCF TNNIPQRDGG THLVGFRSAL TRNLNNYIEQ
     EGLAKKHKVA TTGDDAREGL TAIISVKVPD PKFSSQTKDK LVSSEVKTAV EQEMGKYFSD
     FLLENPNEAK LVVGKMIDAA RAREAARKAR EMTRRKGALD IAGLPGKLAD CQEKDPALSE
     LYLVEGDSAG GSAKQGRNRK TQAILPLKGK ILNVEKARFD KMISSQEVGT LITALGCGIG
     REEYNIDKLR YHNIIIMTDA DVDGSHIRTL LLTFFFRQLP ELIERGYIYI AQPPLYKVKK
     GKQEQYIKDD DAMEEYMTQS ALEDASLHLN EDAPGISGEA LERLVNDFRM VMKTLKRLSR
     LYPQELTEHF IYLPAVSLEM LGDHAKMQDW LAQYEVRLRT VEKSGLVYKA SLREDRERGV
     WLPEVELISH GLSNYVTFNR DFFGSNDYKT VVTLGAQLST LLDEGAYIQR GERKKAVTEF
     KEALDWLMAE STKRHTIQRY KGLGEMNPDQ LWETTMDPSV RRMLKVTIED AIGADQIFNT
     LMGDAVEPRR DFIESNALAV SNLDF
//

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