ID L0AE68_NATGS Unreviewed; 644 AA.
AC L0AE68;
DT 06-MAR-2013, integrated into UniProtKB/TrEMBL.
DT 06-MAR-2013, sequence version 1.
DT 27-MAR-2024, entry version 73.
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 ECO:0000313|EMBL:ELY66749.1};
GN OrderedLocusNames=Natgr_0184 {ECO:0000313|EMBL:AFZ71447.1};
GN ORFNames=C490_12070 {ECO:0000313|EMBL:ELY66749.1}, CYV19_12175
GN {ECO:0000313|EMBL:PLK19959.1};
OS Natronobacterium gregoryi (strain ATCC 43098 / DSM 3393 / CCM 3738 / CIP
OS 104747 / IAM 13177 / JCM 8860 / NBRC 102187 / NCIMB 2189 / SP2).
OC Archaea; Euryarchaeota; Stenosarchaea group; Halobacteria; Natrialbales;
OC Natrialbaceae; Natronobacterium.
OX NCBI_TaxID=797304 {ECO:0000313|EMBL:AFZ71447.1, ECO:0000313|Proteomes:UP000010468};
RN [1] {ECO:0000313|Proteomes:UP000010468}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 43098 / CCM 3738 / NCIMB 2189 / SP2
RC {ECO:0000313|Proteomes:UP000010468};
RA Lucas S., Han J., Lapidus A., Cheng J.-F., Goodwin L., Pitluck S.,
RA Peters L., Mikhailova N., Teshima H., Detter J.C., Han C., Tapia R.,
RA Land M., Hauser L., Kyrpides N., Ivanova N., Pagani I., Sproer C.,
RA Anderson I., Woyke T.;
RT "Complete sequence of Natronobacterium gregoryi SP2.";
RL Submitted (MAR-2012) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:AFZ71447.1}
RP NUCLEOTIDE SEQUENCE.
RC STRAIN=SP2 {ECO:0000313|EMBL:AFZ71447.1};
RG US DOE Joint Genome Institute;
RA Lucas S., Han J., Lapidus A., Cheng J.-F., Goodwin L., Pitluck S.,
RA Peters L., Mikhailova N., Teshima H., Detter J.C., Han C., Tapia R.,
RA Land M., Hauser L., Kyrpides N., Ivanova N., Pagani I., Sproer C.,
RA Anderson I., Woyke T.;
RT "Complete sequence of Natronobacterium gregoryi SP2.";
RL Submitted (MAR-2012) to the EMBL/GenBank/DDBJ databases.
RN [3] {ECO:0000313|EMBL:ELY66749.1, ECO:0000313|Proteomes:UP000011613}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=SP2 {ECO:0000313|EMBL:ELY66749.1,
RC ECO:0000313|Proteomes:UP000011613};
RX PubMed=25393412; DOI=10.1371/journal.pgen.1004784;
RA Becker E.A., Seitzer P.M., Tritt A., Larsen D., Krusor M., Yao A.I., Wu D.,
RA Madern D., Eisen J.A., Darling A.E., Facciotti M.T.;
RT "Phylogenetically driven sequencing of extremely halophilic archaea reveals
RT strategies for static and dynamic osmo-response.";
RL PLoS Genet. 10:E1004784-E1004784(2014).
RN [4] {ECO:0000313|EMBL:PLK19959.1, ECO:0000313|Proteomes:UP000234484}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=SP2 {ECO:0000313|EMBL:PLK19959.1,
RC ECO:0000313|Proteomes:UP000234484};
RC TISSUE=Freeze-dried powder thallus {ECO:0000313|EMBL:PLK19959.1};
RA Jiang L., He B., Kang J., Yu M., Li N., Fang Y., Tang Z., Wu P., Yao P.,
RA Huang J.;
RT "The characterization of oligonucleotides binding to NgAgo.";
RL Submitted (DEC-2017) 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; CP003377; AFZ71447.1; -; Genomic_DNA.
DR EMBL; AOIC01000087; ELY66749.1; -; Genomic_DNA.
DR EMBL; PKKI01000035; PLK19959.1; -; Genomic_DNA.
DR RefSeq; WP_005579991.1; NZ_PKKI01000035.1.
DR AlphaFoldDB; L0AE68; -.
DR STRING; 797304.Natgr_0184; -.
DR GeneID; 14207348; -.
DR KEGG; nge:Natgr_0184; -.
DR PATRIC; fig|797304.7.peg.2449; -.
DR eggNOG; arCOG04371; Archaea.
DR HOGENOM; CLU_006146_4_1_2; -.
DR Proteomes; UP000010468; Chromosome.
DR Proteomes; UP000011613; Unassembled WGS sequence.
DR Proteomes; UP000234484; 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}; 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:UP000010468};
KW Topoisomerase {ECO:0000256|ARBA:ARBA00023029, ECO:0000256|HAMAP-
KW Rule:MF_01898}.
FT DOMAIN 428..542
FT /note="Toprim"
FT /evidence="ECO:0000259|PROSITE:PS50880"
FT REGION 400..419
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 434
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 507
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01898"
FT BINDING 507
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 509
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01898"
FT SITE 459
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01898"
FT SITE 462
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01898"
SQ SEQUENCE 644 AA; 71664 MW; 0DD32F1B163DDAE7 CRC64;
MSQESEYGAG QIQVLEGLEA VRKRPAMYIG STDSRGLHHL VYEVVDNSID EALAGHCDDI
TVTIHEDRSV SVTDDGRGIP VDTHEEYDRP ALEVILTVLH AGGKFDNKSY QVSGGLHGVG
VSVVNALSER LEAEVKRDGG VYRHAFEGGE PVGDMERVRD MESDEETGTE IRFWPDGSIF
ESDEFSFSTL ANRLRELAFL NSGVRITLRD EREDADDAAG VATETYEYEG GIREFVEYLN
ETRSAMHETV IYFEDETQNI HVEVAMQATK ELQGSIHAFA NNINTREGGT HLTGFKTALT
RTVNDYANEN DLLSDLDENL KGEDIREGLT AVVSIKHPDP QFEGQTKTKL GNSEVRGIVE
SAMHDGLGTY FEEQPDTAEA IVTKAVEAAK ARKAAQKAEE LTRRKSALES TSLPGKLADC
QTKDPEEAEL FIAEGDSAGG SAKQARNPDF QAILPIKGKI LNVEKHRLDR ILENDEIRNM
ITAIGAGIGD EFDVEDVRYK KIIMATDADV DGAHIRTLLL TFFYRHMRPL LEGGYVYATQ
PPLYRVRYRG ETYDAMTEAE RDEIVAEKCD GNPTQVQRFK GLGEMNPQQL WDTTMNPDNR
ILKQITIEDA AAADKMFSVL MGDAVEPRKQ FIKENAPEAE WIDI
//
