GenomeNet

Database: UniProt
Entry: K6YEH7_9ALTE
LinkDB: K6YEH7_9ALTE
Original site: K6YEH7_9ALTE 
ID   K6YEH7_9ALTE            Unreviewed;       806 AA.
AC   K6YEH7;
DT   09-JAN-2013, integrated into UniProtKB/TrEMBL.
DT   09-JAN-2013, sequence version 1.
DT   27-MAR-2024, entry version 79.
DE   RecName: Full=DNA gyrase subunit B {ECO:0000256|ARBA:ARBA00019166, ECO:0000256|HAMAP-Rule:MF_01898};
DE            EC=5.6.2.2 {ECO:0000256|ARBA:ARBA00012895, ECO:0000256|HAMAP-Rule:MF_01898};
GN   Name=gyrB {ECO:0000256|HAMAP-Rule:MF_01898,
GN   ECO:0000313|EMBL:GAC31149.1};
GN   ORFNames=GPLA_0230 {ECO:0000313|EMBL:GAC31149.1};
OS   Paraglaciecola polaris LMG 21857.
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Alteromonadales;
OC   Alteromonadaceae; Paraglaciecola.
OX   NCBI_TaxID=1129793 {ECO:0000313|EMBL:GAC31149.1, ECO:0000313|Proteomes:UP000006322};
RN   [1] {ECO:0000313|EMBL:GAC31149.1, ECO:0000313|Proteomes:UP000006322}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=LMG 21857 {ECO:0000313|EMBL:GAC31149.1,
RC   ECO:0000313|Proteomes:UP000006322};
RX   PubMed=25009843;
RA   Qin Q.-L., Xie B.-B., Yu Y., Shu Y.-L., Rong J.-C., Zhang Y.-J.,
RA   Zhao D.-L., Chen X.-L., Zhang X.-Y., Chen B., Zhou B.-C., Zhang Y.-Z.;
RT   "Comparative genomics of the marine bacterial genus Glaciecola reveals the
RT   high degree of genomic diversity and genomic characteristic for cold
RT   adaptation.";
RL   Environ. Microbiol. 16:1642-1653(2014).
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:GAC31149.1}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; BAER01000014; GAC31149.1; -; Genomic_DNA.
DR   RefSeq; WP_007102957.1; NZ_BAER01000014.1.
DR   AlphaFoldDB; K6YEH7; -.
DR   STRING; 1129793.GPLA_0230; -.
DR   OrthoDB; 9802808at2; -.
DR   Proteomes; UP000006322; 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; 3.10.20.690; -; 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; IPR041423; GyrB_insert.
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; PF18053; GyrB_insert; 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   806 AA;  90369 MW;  988B6CB1FEA6EC91 CRC64;
     MAEEHKYDSS SIKVLKGLDA VRKRPGMYIG DTDDGTGLHH MVFEVVDNSI DEALAGHCTN
     INVKIHTDGS VSVKDDGRGI PTEIHEEEGV SAAEVIMTVL HAGGKFDDNS YKVSGGLHGV
     GVSVVNALSH KLQILIRRAG EVHEQEYRHG VPQKPLEVIG ESDTTGTSIR FWPSEGTFNG
     VTFHYDILAK RLRELSFLNS GVSIILEDER DGKRDHFKYE GGIKAFVEYL NQNKTPVHQQ
     VFHFNSERDD GISVEVALQW NDSFQENVYC FTNNIPQRDG GSHLAGFRGA LTRTLNTFME
     KEGHNKKNKT SASGDDAREG LTAVVSVKVP DPKFSSQTKD KLVSSEVRPA VETVMGEKLN
     EFLLENPAAS KIIIGKIIDA ARAREAARKA RDMTRRKGAL DLAGLPGKLA DCQEKDPSLS
     ELYIVEGDSA GGSAKQGRNR KNQAILPLKG KILNVEKARF DKMLSSQEVA TLITALGCGI
     GRDEYDPEKL RYHRIIIMTD ADVDGSHIRT LLLTFFYRQM PEIIERGYIY IAQPPLYKTK
     KGKQEQYLKD DDSLTKYLTA IALDNASIHV NEDAPGLNGA SLEKLVNQYQ NCMKMIKRMS
     RVMPEVILSS LIYSKVIDLS DLQDDSKLEI VAKSYTDSLT RNEIDGATYR YEVRVNNERK
     NWYIALIIRL HGIDTEYKID QEFIESIEYT RLRELNESIN GLIEEGGYVK RNDKVKPITS
     FAEGLEWLMA ESKKGQYIQR YKGLGEMNPS QLWETTMDPG SRRMLQVKVE DAIAADQLFT
     TLMGDHVEPR RAFIEENALR VANLDV
//
DBGET integrated database retrieval system