ID R6IC64_9FIRM Unreviewed; 830 AA.
AC R6IC64;
DT 24-JUL-2013, integrated into UniProtKB/TrEMBL.
DT 24-JUL-2013, sequence version 1.
DT 27-MAR-2024, entry version 49.
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=BN556_01558 {ECO:0000313|EMBL:CDB44114.1};
OS Firmicutes bacterium CAG:240.
OC Bacteria; Bacillota.
OX NCBI_TaxID=1263013 {ECO:0000313|EMBL:CDB44114.1, ECO:0000313|Proteomes:UP000018051};
RN [1] {ECO:0000313|EMBL:CDB44114.1, ECO:0000313|Proteomes:UP000018051}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=MGS:240 {ECO:0000313|Proteomes:UP000018051};
RA Nielsen H.B., Almeida M., Juncker A.S., Rasmussen S., Li J., Sunagawa S.,
RA Plichta D., Gautier L., Le Chatelier E., Peletier E., Bonde I., Nielsen T.,
RA Manichanh C., Arumugam M., Batto J., Santos M.B.Q.D., Blom N., Borruel N.,
RA Burgdorf K.S., Boumezbeur F., Casellas F., Dore J., Guarner F., Hansen T.,
RA Hildebrand F., Kaas R.S., Kennedy S., Kristiansen K., Kultima J.R.,
RA Leonard P., Levenez F., Lund O., Moumen B., Le Paslier D., Pons N.,
RA Pedersen O., Prifti E., Qin J., Raes J., Tap J., Tims S., Ussery D.W.,
RA Yamada T., MetaHit consortium, Renault P., Sicheritz-Ponten T., Bork P.,
RA Wang J., Brunak S., Ehrlich S.D.;
RT "Dependencies among metagenomic species, viruses, plasmids and units of
RT genetic variation.";
RL Submitted (NOV-2012) 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:CDB44114.1}.
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DR EMBL; CBDR010000180; CDB44114.1; -; Genomic_DNA.
DR AlphaFoldDB; R6IC64; -.
DR Proteomes; UP000018051; 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}; Reference proteome {ECO:0000313|Proteomes:UP000018051};
KW Topoisomerase {ECO:0000256|ARBA:ARBA00023029, ECO:0000256|HAMAP-
KW Rule:MF_01897}.
FT DOMAIN 23..476
FT /note="DNA topoisomerase type IIA"
FT /evidence="ECO:0000259|SMART:SM00434"
FT COILED 441..468
FT /evidence="ECO:0000256|SAM:Coils"
FT MOTIF 537..543
FT /note="GyrA-box"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01897"
FT ACT_SITE 134
FT /note="O-(5'-phospho-DNA)-tyrosine intermediate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01897"
SQ SEQUENCE 830 AA; 92987 MW; A09C8F619C6B663B CRC64;
MASKNKDYKP EDIAFPDQHI VQSELVGEMT TSYIEYAMSV IIGRALPDVR DGLKPVHRRI
LYAMYEDNLT HDKPFRKCAT AVGDVLGRYH PHGDASVYDA LVRLAQDFSM RYPLIDGHGN
FGSVDGDPPA AYRYTEARMA RMSDEMLRDI EKDTVDWDPN FDETRKEPRV LPSRFPNLLV
NGSSGIAVGM ATNIPPHNLT EVINACICVL DNPEATMNEL LQHVTGPDFP TKGIILGRSG
IRQAYMTGRG KVIMRARTEF EEFGKDRTRI IVTELPYQVN KRQLIATIAE NVRDKRIEGI
SDLRDETDRN GMRIVIELKR DANPQVVLNR LLTQTQMQTS FSINMLALVN NQTQPKILNL
RHIIDEYLTF QEELIVRRTK YDLKKAEERA HLLEGLLIAQ DNIDEVIHII RNSYDNAKQN
LMERFGLSDV QAQAILDMRL KSLQGLDREK LENEYRELEE RIAYFKELLA DPEKIKGVLK
DELIEIREKY GDERKTEIQD VEDEIDIEDL IEEEDCVYTL THNGYIKRLP TVEYRAQGRG
GKGVKAMATR EEDYVETVFT ASTHDSILFF TNLGKVYVRK GYRIPEAGRS ARGQNIVNII
PTDPGEKVSA MIAGRGVTED NYLVFVTRNG TVKRTAQSAF KNIRSNGIRA LSLDEGDELI
SVLQTTGEDK ILLATHDGMA ICFAETDARA MGRDAVGVRG IRLREGDYVV GAGIAAEGAA
ILSITENGYG KRTDVGEYSV QNRGGMGLKN YNVTDKTGPV ADVVIVTGDE DLLVISDDGT
IIRMDVGSIS LLSRSTQGVR VMRLTGDAKV ISIAPTDKED SAEADSPEAN
//
