ID A0A1M6T5H0_9BACL Unreviewed; 822 AA.
AC A0A1M6T5H0;
DT 15-MAR-2017, integrated into UniProtKB/TrEMBL.
DT 15-MAR-2017, sequence version 1.
DT 27-MAR-2024, entry version 34.
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=SAMN05443507_11577 {ECO:0000313|EMBL:SHK52203.1};
OS Alicyclobacillus montanus.
OC Bacteria; Bacillota; Bacilli; Bacillales; Alicyclobacillaceae;
OC Alicyclobacillus.
OX NCBI_TaxID=1830138 {ECO:0000313|EMBL:SHK52203.1, ECO:0000313|Proteomes:UP000184016};
RN [1] {ECO:0000313|Proteomes:UP000184016}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=USBA-503 {ECO:0000313|Proteomes:UP000184016};
RA Varghese N., Submissions S.;
RL Submitted (NOV-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 ---------------------------------------------------------------------------
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; FRAF01000015; SHK52203.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A1M6T5H0; -.
DR STRING; 1830138.SAMN05443507_11577; -.
DR Proteomes; UP000184016; 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:UP000184016};
KW Topoisomerase {ECO:0000256|ARBA:ARBA00023029, ECO:0000256|HAMAP-
KW Rule:MF_01897}.
FT DOMAIN 12..465
FT /note="DNA topoisomerase type IIA"
FT /evidence="ECO:0000259|SMART:SM00434"
FT COILED 437..464
FT /evidence="ECO:0000256|SAM:Coils"
FT MOTIF 526..532
FT /note="GyrA-box"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01897"
FT ACT_SITE 123
FT /note="O-(5'-phospho-DNA)-tyrosine intermediate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01897"
SQ SEQUENCE 822 AA; 91918 MW; 1BA59078CD213915 CRC64;
MSQDYMGKVI PIDLGDEVRQ SFMDYAMSVI ISRAIPDVRD GLKPVHRRIL YAMYESGMTH
EKPYKKSAHI VGDVLGRYHP HGDASVYDAL VRLAQEFSTR YLLVDGHGNF GSVDGDSAAA
MRYTESRMSA IAMELLRDIQ KETVNFGPNY DENEQEPLVL PARFPNLLAN GSSGIAVGMA
TNIPPHNLRE VINGVVAMID HPDVTVSELM NYIKGPDFPT GGIILGRDGI RRAYETGRGS
ITVRAKTEFE EMSGGKTRIV VTEIPYQQNK ARLVEKIAEL ARDKKIDGIT DLRDESDRNG
MRMVIELRRD VRPQVVLNNL FKFTGLQTNF GIINLALVNG EPKVLNLRQM LYHYLEHQKE
VVTRRTQYDL RKAEARAHIL EGLRIALDHL DAVIALIRAS QTVDEAREGL IQRFGLSQEQ
AQAILDMRLQ RLTGLEREKI EAEYAELQKL ISELRAILAD ESRLMGVIRE EIIQIRDKFG
DERRTEIVAA EGDINEEDLI PVQDVAITIT HAGYVKRIPL STYQSQRRGG RGMTMMGTRE
EDFVEHLHIC SSHSPVLFFT NRGRVYNLKA YEIPEFSRQA KGVPIINLLN IEQGEKITAV
IPLGTIAEED MEQLTLFFAT RMGIVKKSAL SEYANIRKTG LIALHLKEDD EVISVKLTNG
SKDIIMATRC GLSIRFPESD VRTMGRNATG VKGIALNPND ELIAMDVIEE DHEVLVVTSR
GYGKKTPADD YRTQSRGGKG IKTLNCTKKN GVVIALRMVT SQDDLMIITN AGVAIRIHVA
DISTQSRNTQ GVKLINVPDG EEVATVARVI TTDDTETEED SI
//
