ID U2WJV5_9FIRM Unreviewed; 679 AA.
AC U2WJV5;
DT 13-NOV-2013, integrated into UniProtKB/TrEMBL.
DT 13-NOV-2013, sequence version 1.
DT 24-JAN-2024, entry version 54.
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 ORFNames=HMPREF1985_00177 {ECO:0000313|EMBL:ERL25451.1};
OS Mitsuokella sp. oral taxon 131 str. W9106.
OC Bacteria; Bacillota; Negativicutes; Selenomonadales; Selenomonadaceae;
OC Mitsuokella.
OX NCBI_TaxID=1321781 {ECO:0000313|EMBL:ERL25451.1, ECO:0000313|Proteomes:UP000016614};
RN [1] {ECO:0000313|EMBL:ERL25451.1, ECO:0000313|Proteomes:UP000016614}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=W9106 {ECO:0000313|EMBL:ERL25451.1,
RC ECO:0000313|Proteomes:UP000016614};
RA Weinstock G., Sodergren E., Wylie T., Fulton L., Fulton R., Fronick C.,
RA O'Laughlin M., Godfrey J., Miner T., Herter B., Appelbaum E., Cordes M.,
RA Lek S., Wollam A., Pepin K.H., Palsikar V.B., Mitreva M., Wilson R.K.;
RL Submitted (AUG-2013) 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}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:ERL25451.1}.
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DR EMBL; AWVT01000002; ERL25451.1; -; Genomic_DNA.
DR AlphaFoldDB; U2WJV5; -.
DR STRING; 1321781.HMPREF1985_00177; -.
DR PATRIC; fig|1321781.3.peg.169; -.
DR eggNOG; COG0187; Bacteria.
DR HOGENOM; CLU_006146_4_1_9; -.
DR Proteomes; UP000016614; Unassembled WGS sequence.
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; -; 1.
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; 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; 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}; Coiled coil {ECO:0000256|SAM:Coils};
KW Cytoplasm {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}; Reference proteome {ECO:0000313|Proteomes:UP000016614};
KW Topoisomerase {ECO:0000256|ARBA:ARBA00023029, ECO:0000256|HAMAP-
KW Rule:MF_01898}.
FT DOMAIN 464..578
FT /note="Toprim"
FT /evidence="ECO:0000259|PROSITE:PS50880"
FT REGION 1..28
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COILED 420..447
FT /evidence="ECO:0000256|SAM:Coils"
FT COMPBIAS 1..26
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 470
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 543
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01898"
FT BINDING 543
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 545
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01898"
FT SITE 495
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01898"
FT SITE 498
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01898"
SQ SEQUENCE 679 AA; 75813 MW; C7871B6A5B615856 CRC64;
MANDNEKKSI DLTEQDVQKE PQEDLTDADL DLAGVEINRD ESAAEVTAVE ADYGAEQIQI
LEGLEAVRKR PGMYIGSTSE RGLHHLVYEV VDNSIDEALA GYCDHIEVTI EADDSITVVD
NGRGIPVDMH ESGKPAVEVV LTVLHAGGKF GGDGYKVSGG LHGVGVSVVN ALSTSMDVEV
RRDGKIYEIS FARGMTKKPL TIVGDSEATG TRVHFVPDPS IFTVTKYSYD TLRHRLRELA
FLNHGITIML SDAREGGKSE TFHFEGGISS FVEHLNRKKE KLNPKPIYFN GVKGDTVVEI
ALQYNDSYQE NIYAFVNNIH TEEGGTHLAG FKLALTRAAN DFARRQGILK EKDGNLSGDD
VREGLTCVIS LKIREPQFEG QTKTKLGNSE VRGIVDSIVT EGLSEYFEEN PVITKRIIEK
AIMAQRAREA ARKARELTRR KNALEVSSLP GKLADCSIKD PEQAEIYLVE GDSAGGSAKQ
GRDRRFQAIL PLRGKILNVE KARLDRIFAN AEIRTMITAF GTGISDDFDL AKRRYGKIII
MTDADVDGAH IRTLLLTFLY RYMKPLIEHG HVFIAQPPLY QIRKGKKHWY TYSDDELAKK
LEEVGRDSIT VQRYKGLGEM NPEQLWETTM DPEGRTMLRV DMEDAEEADE LFTILMGDKV
EPRRQFIEEN AKLVRNLDI
//
