ID A0A1B6B817_9FIRM Unreviewed; 847 AA.
AC A0A1B6B817;
DT 02-NOV-2016, integrated into UniProtKB/TrEMBL.
DT 02-NOV-2016, sequence version 1.
DT 27-MAR-2024, entry version 32.
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=F3D3_0388 {ECO:0000313|EMBL:GAU75795.1};
OS Fusibacter sp. 3D3.
OC Bacteria; Bacillota; Clostridia; Eubacteriales;
OC Eubacteriales Family XII. Incertae Sedis; Fusibacter.
OX NCBI_TaxID=1048380 {ECO:0000313|EMBL:GAU75795.1, ECO:0000313|Proteomes:UP000095197};
RN [1] {ECO:0000313|EMBL:GAU75795.1, ECO:0000313|Proteomes:UP000095197}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=3D3 {ECO:0000313|EMBL:GAU75795.1,
RC ECO:0000313|Proteomes:UP000095197};
RA Serrano A.E., Escudero L.V., Encalada O., Tebes C.J., Fernandez S.,
RA Demergasso C.S.;
RT "Draft genome sequence of Fusibacter ascotence 3D3 isolated from the high
RT arsenic level Ascotan salt flat in northern Chile.";
RL Submitted (SEP-2016) 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_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: 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:GAU75795.1}.
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DR EMBL; BDHH01000001; GAU75795.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A1B6B817; -.
DR STRING; 1048380.F3D3_0388; -.
DR Proteomes; UP000095197; 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}; 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}; Reference proteome {ECO:0000313|Proteomes:UP000095197};
KW Topoisomerase {ECO:0000256|ARBA:ARBA00023029, ECO:0000256|HAMAP-
KW Rule:MF_01897}.
FT DOMAIN 26..477
FT /note="DNA topoisomerase type IIA"
FT /evidence="ECO:0000259|SMART:SM00434"
FT MOTIF 538..544
FT /note="GyrA-box"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01897"
FT ACT_SITE 137
FT /note="O-(5'-phospho-DNA)-tyrosine intermediate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01897"
SQ SEQUENCE 847 AA; 95772 MW; 80F85CBAE0F6A052 CRC64;
MSDFKNDDVN DEINESINES ETIIQVDIMD EMKKSYMDYA MSVIVSRALP DARDGLKPVH
RRILYAMNEI NFTHDKPHRK SARIVGEVIG KYHPHGDSSI YGAMVRFAQD FSMRYLLVDG
QGNFGSIDGD GAAAMRYTEA RMTRLSGELL RDIEKNTVDF MPNFDETETQ PVVLPSRFPN
LLVNGSNGIA VGMATSIPPH NLGEVIDAVV KMMDDPETDV YDLMECVKGP DFPTGAEIMG
IEGIKRAYRT GRGRVILRSK AEIEEMKNGK TRIIVSEIPY QVNKSKMIEG IAELVKSKRL
EGITDLRDES NRNGIRVVIE LRRDVNANIM LNQLYKNSQL QVSYSIILLA LVGGEPKVMN
LREIISVYID HQIEVETRRV VFDLQKARDR AHILEGLRTA IDNIDEVIRI IRSAYNDAEQ
KLMERFNLSE IQSKTIVDMR LRRLQGLERE KIENEYTEIL KTIDYLISLL NDKELLLSII
KEDLLRIKKQ YNDERRTDIS INPDEIDYED LIEEDEVIIT LTHAGYIKRV STGEYVSQKR
GGRGKTGLST REEDFVKDIF TTSTHDYLLF FTNFGKVYRM KAYRIPDGSR ISKGTAIVNL
LPLEPEERVN AIVPIKDFDN GYLTLCTKQG VIKKTTLDQF DTSRKTGLIA INLNEDDQLI
SVKRTDGNNE MIVITAKGKS IRFSENDVRP MGRTATGVRA IKLASYDHVI EMDIVTENGK
MLIVSENGYG KRTPLTEYRQ QTRGGKGIIT YNINSKTGSV IGAKVVEDSD DLMIINDNGV
LIRIKVDEIS VTGRITSGVR LMKVNDETNL VSIALIKDVD SEDIASEGSE KTLIENTLGE
ITETEEE
//
