ID E8WJD6_GEOS8 Unreviewed; 796 AA.
AC E8WJD6;
DT 05-APR-2011, integrated into UniProtKB/TrEMBL.
DT 05-APR-2011, sequence version 1.
DT 27-MAR-2024, entry version 82.
DE RecName: Full=DNA gyrase subunit B {ECO:0000256|HAMAP-Rule:MF_01898};
DE EC=5.6.2.2 {ECO:0000256|HAMAP-Rule:MF_01898};
GN Name=gyrB {ECO:0000256|HAMAP-Rule:MF_01898};
GN OrderedLocusNames=GM18_0004 {ECO:0000313|EMBL:ADW11496.1};
OS Geobacter sp. (strain M18).
OC Bacteria; Thermodesulfobacteriota; Desulfuromonadia; Geobacterales;
OC Geobacteraceae; Geobacter.
OX NCBI_TaxID=443143 {ECO:0000313|EMBL:ADW11496.1, ECO:0000313|Proteomes:UP000001442};
RN [1] {ECO:0000313|EMBL:ADW11496.1, ECO:0000313|Proteomes:UP000001442}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=M18 {ECO:0000313|EMBL:ADW11496.1,
RC ECO:0000313|Proteomes:UP000001442};
RG US DOE Joint Genome Institute;
RA Lucas S., Copeland A., Lapidus A., Cheng J.-F., Goodwin L., Pitluck S.,
RA Chertkov O., Munk C., Detter J.C., Han C., Tapia R., Land M., Hauser L.,
RA Kyrpides N., Ivanova N., Ovchinnikova G., Pagani I., Holmes D.,
RA Aklujkar M., Lovley D., Woyke T.;
RT "Complete sequence of Geobacter sp. M18.";
RL Submitted (JAN-2011) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: A type II topoisomerase that negatively supercoils closed
CC circular double-stranded (ds) DNA in an ATP-dependent manner to
CC modulate DNA topology and maintain chromosomes in an underwound state.
CC Negative supercoiling favors strand separation, and DNA replication,
CC transcription, recombination and repair, all of which involve strand
CC separation. Also able to catalyze the interconversion of other
CC topological isomers of dsDNA rings, including catenanes and knotted
CC rings. Type II topoisomerases break and join 2 DNA strands
CC simultaneously in an ATP-dependent manner. {ECO:0000256|HAMAP-
CC Rule:MF_01898}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=ATP-dependent breakage, passage and rejoining of double-
CC stranded DNA.; EC=5.6.2.2; Evidence={ECO:0000256|ARBA:ARBA00000185,
CC ECO:0000256|HAMAP-Rule:MF_01898};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01898};
CC Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01898};
CC Name=Ca(2+); Xref=ChEBI:CHEBI:29108;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01898};
CC Note=Binds two Mg(2+) per subunit. The magnesium ions form salt bridges
CC with both the protein and the DNA. Can also accept other divalent metal
CC cations, such as Mn(2+) or Ca(2+). {ECO:0000256|HAMAP-Rule:MF_01898};
CC -!- SUBUNIT: Heterotetramer, composed of two GyrA and two GyrB chains. In
CC the heterotetramer, GyrA contains the active site tyrosine that forms a
CC transient covalent intermediate with DNA, while GyrB binds cofactors
CC and catalyzes ATP hydrolysis. {ECO:0000256|HAMAP-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 topoisomerases;
CC in organisms with a single type II topoisomerase this enzyme also has
CC to decatenate newly replicated chromosomes. {ECO:0000256|HAMAP-
CC Rule:MF_01898}.
CC -!- SIMILARITY: Belongs to the type II topoisomerase GyrB family.
CC {ECO:0000256|ARBA:ARBA00010708, ECO:0000256|HAMAP-Rule:MF_01898}.
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DR EMBL; CP002479; ADW11496.1; -; Genomic_DNA.
DR AlphaFoldDB; E8WJD6; -.
DR STRING; 443143.GM18_0004; -.
DR KEGG; geb:GM18_0004; -.
DR eggNOG; COG0187; Bacteria.
DR HOGENOM; CLU_006146_4_1_7; -.
DR OrthoDB; 9802808at2; -.
DR Proteomes; UP000001442; 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 (double strand cut, 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-templated DNA replication; IEA:UniProtKB-UniRule.
DR CDD; cd16928; HATPase_GyrB-like; 1.
DR CDD; cd00822; TopoII_Trans_DNA_gyrase; 1.
DR CDD; cd03366; TOPRIM_TopoIIA_GyrB; 1.
DR Gene3D; 3.30.230.10; -; 1.
DR Gene3D; 3.40.50.670; -; 2.
DR Gene3D; 3.30.565.10; Histidine kinase-like ATPase, C-terminal domain; 1.
DR HAMAP; MF_01898; GyrB; 1.
DR InterPro; IPR002288; DNA_gyrase_B_C.
DR InterPro; IPR011557; GyrB.
DR InterPro; IPR049353; GyrB_hook.
DR InterPro; IPR003594; HATPase_C.
DR InterPro; IPR036890; HATPase_C_sf.
DR InterPro; IPR020568; Ribosomal_Su5_D2-typ_SF.
DR InterPro; IPR014721; Ribsml_uS5_D2-typ_fold_subgr.
DR InterPro; IPR001241; Topo_IIA.
DR InterPro; IPR013760; Topo_IIA-like_dom_sf.
DR InterPro; IPR000565; Topo_IIA_B.
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 NCBIfam; TIGR01059; gyrB; 1.
DR PANTHER; PTHR45866:SF1; DNA GYRASE SUBUNIT B, MITOCHONDRIAL; 1.
DR PANTHER; PTHR45866; DNA GYRASE/TOPOISOMERASE SUBUNIT B; 1.
DR Pfam; PF00204; DNA_gyraseB; 1.
DR Pfam; PF00986; DNA_gyraseB_C; 1.
DR Pfam; PF21249; GyrB_hook; 1.
DR Pfam; PF02518; HATPase_c; 1.
DR Pfam; PF01751; Toprim; 1.
DR PRINTS; PR01159; DNAGYRASEB.
DR PRINTS; PR00418; TPI2FAMILY.
DR SMART; SM00387; HATPase_c; 1.
DR SMART; SM00433; TOP2c; 1.
DR SUPFAM; SSF55874; ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase; 1.
DR SUPFAM; SSF54211; Ribosomal protein S5 domain 2-like; 1.
DR SUPFAM; SSF56719; Type II DNA topoisomerase; 1.
DR PROSITE; PS00177; TOPOISOMERASE_II; 1.
DR PROSITE; PS50880; TOPRIM; 1.
PE 3: Inferred from homology;
KW ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|HAMAP-
KW Rule:MF_01898};
KW Cytoplasm {ECO:0000256|ARBA:ARBA00022490, ECO:0000256|HAMAP-Rule:MF_01898};
KW DNA-binding {ECO:0000256|ARBA:ARBA00023125};
KW Isomerase {ECO:0000256|ARBA:ARBA00023235, ECO:0000256|HAMAP-Rule:MF_01898};
KW Magnesium {ECO:0000256|ARBA:ARBA00022842, ECO:0000256|HAMAP-Rule:MF_01898};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_01898};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW Rule:MF_01898};
KW Topoisomerase {ECO:0000256|ARBA:ARBA00023029, ECO:0000256|HAMAP-
KW Rule:MF_01898}.
FT DOMAIN 420..535
FT /note="Toprim"
FT /evidence="ECO:0000259|PROSITE:PS50880"
FT BINDING 426
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01898"
FT BINDING 500
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01898"
FT BINDING 500
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01898"
FT BINDING 502
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01898"
FT SITE 451
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01898"
FT SITE 454
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01898"
SQ SEQUENCE 796 AA; 89390 MW; 4A8404E2A7F7C446 CRC64;
MSSEEQNDYG ADKIQILEGL EAVRKRPAMY IGSTAAQGLH HLVYELVDNA IDEALAGYCD
AVQVTIHLDG TVTVEDNGRG IPTDMHPTEG RSAAEVVLTV LHAGGKFDNS SYKVSGGLHG
VGSSVVNALS TRLELEIRRN GHLYTQSYRR GVPQAPLAIT GETKRRGTKI TFLPDGEIFE
TTEFSFDILS KRLRELAFLN AGVRIKIHDE RTEKDHDFFY EGGIRSFVEY LNKNKNLVNP
DPIYIKGEKG GVDIEIAMQY NDSYDEKVFS FANNINTHEG GTHLIGFKAS LTRTMNNYAT
ANNLLKNVKV AISGEDLREG LTAVISVKIS QPQFEGQTKT KLGNSEVKGY VETLMNEKLA
TYLEENPAMA RKILEKSIDA ARAREAARKA RELTRRKGAL EVGTLPGKLA DCQEKDPALC
ELFLVEGDSA GGSAKQGRDR KYQAILPLKG KILNVEKARF DKMLASQEIR TLISALGTSI
GKEDFDIAKL RYHRIIIMTD ADVDGSHILT LLLTFFFRQM MEMIERGYLY IAQPPLYKIK
RGRKEQYLKN EAALQSYLLE EGTEDMTLKL GIGDDERVYR GKQIIPILTQ LIDYDELFDK
VVKKGINELL LRVFLKAGIK PGLEEMTDLI ALLPKMKEAY PEVEAQPFDD SILFAFGNLR
VRVDQQIFEV LESYEYAMLL DNHKRVRSMM GAGSGAVLGP EDKVLLETER QEEILSFFLE
SAKKGLYIQR YKGLGEMNPE QLWETTMHQE NRVLLQVKIE DAVAAEEIFT VLMGDQVEPR
RDFIEQNALN VSNLDV
//
