ID J0V6V8_9BACT Unreviewed; 850 AA.
AC J0V6V8;
DT 03-OCT-2012, integrated into UniProtKB/TrEMBL.
DT 03-OCT-2012, sequence version 1.
DT 27-MAR-2024, entry version 57.
DE RecName: Full=DNA gyrase subunit A {ECO:0000256|HAMAP-Rule:MF_01897};
DE EC=5.6.2.2 {ECO:0000256|HAMAP-Rule:MF_01897};
GN Name=gyrA {ECO:0000256|HAMAP-Rule:MF_01897};
GN ORFNames=O71_12605 {ECO:0000313|EMBL:EJF09832.1};
OS Pontibacter sp. BAB1700.
OC Bacteria; Bacteroidota; Cytophagia; Cytophagales; Hymenobacteraceae;
OC Pontibacter.
OX NCBI_TaxID=1144253 {ECO:0000313|EMBL:EJF09832.1, ECO:0000313|Proteomes:UP000003746};
RN [1] {ECO:0000313|EMBL:EJF09832.1, ECO:0000313|Proteomes:UP000003746}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=BAB1700 {ECO:0000313|EMBL:EJF09832.1,
RC ECO:0000313|Proteomes:UP000003746};
RX PubMed=23105068; DOI=10.1128/JB.01550-12;
RA Joshi M.N., Sharma A.C., Pandya R.V., Patel R.P., Saiyed Z.M., Saxena A.K.,
RA Bagatharia S.B.;
RT "Draft Genome Sequence of Pontibacter sp. nov. BAB1700, a Halotolerant,
RT Industrially Important Bacterium.";
RL J. Bacteriol. 194:6329-6330(2012).
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_01897}.
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_01897};
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_01897}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_01897}.
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_01897}.
CC -!- SIMILARITY: Belongs to the type II topoisomerase GyrA/ParC subunit
CC family. {ECO:0000256|ARBA:ARBA00008263, ECO:0000256|HAMAP-
CC Rule:MF_01897}.
CC -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {ECO:0000256|HAMAP-Rule:MF_01897}.
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:EJF09832.1}.
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DR EMBL; AKIS01000086; EJF09832.1; -; Genomic_DNA.
DR RefSeq; WP_007656571.1; NZ_AKIS01000086.1.
DR AlphaFoldDB; J0V6V8; -.
DR PATRIC; fig|1144253.3.peg.2485; -.
DR Proteomes; UP000003746; 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-UniRule.
DR GO; GO:0034335; F:DNA negative supercoiling activity; IEA:UniProt.
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; cd00187; TOP4c; 1.
DR Gene3D; 3.30.1360.40; -; 1.
DR Gene3D; 2.120.10.90; DNA gyrase/topoisomerase IV, subunit A, C-terminal; 1.
DR Gene3D; 3.90.199.10; Topoisomerase II, domain 5; 1.
DR Gene3D; 1.10.268.10; Topoisomerase, domain 3; 1.
DR HAMAP; MF_01897; GyrA; 1.
DR InterPro; IPR005743; GyrA.
DR InterPro; IPR006691; GyrA/parC_rep.
DR InterPro; IPR035516; Gyrase/topoIV_suA_C.
DR InterPro; IPR013760; Topo_IIA-like_dom_sf.
DR InterPro; IPR013758; Topo_IIA_A/C_ab.
DR InterPro; IPR013757; Topo_IIA_A_a_sf.
DR InterPro; IPR002205; Topo_IIA_dom_A.
DR NCBIfam; TIGR01063; gyrA; 1.
DR PANTHER; PTHR43493:SF5; DNA GYRASE SUBUNIT A, CHLOROPLASTIC_MITOCHONDRIAL; 1.
DR PANTHER; PTHR43493; DNA GYRASE/TOPOISOMERASE SUBUNIT A; 1.
DR Pfam; PF03989; DNA_gyraseA_C; 6.
DR Pfam; PF00521; DNA_topoisoIV; 1.
DR SMART; SM00434; TOP4c; 1.
DR SUPFAM; SSF101904; GyrA/ParC C-terminal domain-like; 1.
DR SUPFAM; SSF56719; Type II DNA topoisomerase; 1.
PE 3: Inferred from homology;
KW ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|HAMAP-
KW Rule:MF_01897}; Coiled coil {ECO:0000256|SAM:Coils};
KW Cytoplasm {ECO:0000256|HAMAP-Rule:MF_01897};
KW DNA-binding {ECO:0000256|ARBA:ARBA00023125, ECO:0000256|HAMAP-
KW Rule:MF_01897};
KW Isomerase {ECO:0000256|ARBA:ARBA00023235, ECO:0000256|HAMAP-Rule:MF_01897};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW Rule:MF_01897};
KW Topoisomerase {ECO:0000256|ARBA:ARBA00023029, ECO:0000256|HAMAP-
KW Rule:MF_01897}.
FT DOMAIN 10..463
FT /note="DNA topoisomerase type IIA"
FT /evidence="ECO:0000259|SMART:SM00434"
FT REGION 816..850
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COILED 456..483
FT /evidence="ECO:0000256|SAM:Coils"
FT COMPBIAS 816..837
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 121
FT /note="O-(5'-phospho-DNA)-tyrosine intermediate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01897"
SQ SEQUENCE 850 AA; 95295 MW; EBBF3D19EC292D98 CRC64;
MNEGERIIPI NIEDEMRGAY IDYSMSVIIS RALPDVRDGL KPVHRRVLYG MSELGVSYNK
SYKKSARIVG EVLGKYHPHG DSSVYETMVR MAQEWSLRYP LVDGQGNYGS IDGDSPAAMR
YTEARLKRIA DELLADLDKN TVDFVPNFDD SLKEPSVMPA KFPNLLVNGT SGIAVGMATN
MAPHNLTEVI NGTIAYIDNR EITIAELMHY ITAPDFPTGG IIYGYDGVKA AFETGRGRVL
MRGRANFETT STGKEQIIVT EIPYMVNKAS LIEKTAALIN EKKIEGIADL RDESDRDGLR
IVYDLKRDAI PNVVLNNLYK YTQLQSSFGV NNVALVKGRP MTLNLKDLIH HFVDHRHEVV
IRRTQYELDE ARKRAHILEG LLIALDNLDE VINLIRSSRD PEIARNGLME RFALSEIQAR
AILDMRLQRL TGLERDKIQA EYAEIMKLID YLTSVLNDEG LRMQIIKDEL NEIKERYGDV
RRTSIEASTG DISYEDMIPE ENMVITISHE GYIKRTSLSE YRSQSRGGVG SRGVAASKES
DFTEHLFVAS THHHMLFFTE FGRVFWMKVY EIPEGGKTTK GRAIQNLINI EKDDKIRAVI
NVRDLKNQDF VLNHNLVFCT EQGTIKKTVL EAYSRPRTNG INAITINEGD RLLDVQLTTG
NSEIIIALGS GRAIRFNEHQ VRPMGRNAAG VRGVTLAGPD DKVVGMVCVE NENTELLVVS
ENGFGKRSLL EEYRITNRGG KGVKTLNVTD KTGNLVAIKG VVDTDDLMII NRSGITIRLR
VADIRVIGRA TQGVRLIKLT EGDQISSVAK VEMENEEEVA EALMENSELK PEDSLQPDTQ
IDPETTEDEV
//
