ID A0A1H3YGR6_9BACT Unreviewed; 836 AA.
AC A0A1H3YGR6;
DT 22-NOV-2017, integrated into UniProtKB/TrEMBL.
DT 22-NOV-2017, sequence version 1.
DT 27-MAR-2024, entry version 23.
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=SAMN04487851_102299 {ECO:0000313|EMBL:SEA10224.1};
OS Prevotella sp. tc2-28.
OC Bacteria; Bacteroidota; Bacteroidia; Bacteroidales; Prevotellaceae;
OC Prevotella.
OX NCBI_TaxID=1761888 {ECO:0000313|EMBL:SEA10224.1, ECO:0000313|Proteomes:UP000199625};
RN [1] {ECO:0000313|EMBL:SEA10224.1, ECO:0000313|Proteomes:UP000199625}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=TC2-28 {ECO:0000313|EMBL:SEA10224.1,
RC ECO:0000313|Proteomes:UP000199625};
RA de Groot N.N.;
RL Submitted (OCT-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}.
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DR EMBL; FNRE01000002; SEA10224.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A1H3YGR6; -.
DR STRING; 1761888.SAMN04487851_102299; -.
DR OrthoDB; 9806486at2; -.
DR Proteomes; UP000199625; 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:UP000199625};
KW Topoisomerase {ECO:0000256|ARBA:ARBA00023029, ECO:0000256|HAMAP-
KW Rule:MF_01897}.
FT DOMAIN 13..465
FT /note="DNA topoisomerase type IIA"
FT /evidence="ECO:0000259|SMART:SM00434"
FT MOTIF 526..532
FT /note="GyrA-box"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01897"
FT ACT_SITE 124
FT /note="O-(5'-phospho-DNA)-tyrosine intermediate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01897"
SQ SEQUENCE 836 AA; 94244 MW; 94756B553B567A52 CRC64;
MDQTFDNDRI VKINIEEEMK SSYIDYSMSV IVARALPDVR DGFKPVHRRI LYGMMGINNV
STQPYKKCAR VVGEVLGKYH PHGDSSVYGA LVRMAQEWNM RYTLVDGQGN FGSVDGDSPA
AMRYTECRLS KMGEHIMDDL EKDTVDMVNN FDDSLVEPSV MPTKIPNLLV NGGNGIAVGM
ATNMPTHNLG EVIDGCCAYI DNPDIDTDGL MRYIPGPDFP TGAYIYGLQG VRDAYETGRG
RIVMRAKAEI ESGETHDKIV VTEIPYGVNK ADLVKYIADL ANEHKIEGVA NVNDESGRQG
MRIVVDCKRD ANANVLLNKL FKMTALQSSF SVNNIALVKG RPRLLTLKEC VKYFVEHRHD
VTIRRTKYDL KKAQERAHIL EGLIIAVNNI DEVVHIIRNS KTPSDAQRNL EARFNLDELQ
SKAIVDMRLS QLTGLRVDQL HQEFDDLMKL IADLEEILNN PERCKEVMKQ ELQEVKEKYG
DDRRTEIIPF DHEFNAEDFY PDDPVVITIS HMGYVKRTKL DEFHEQGRGG VGAKAARHRD
NDFTEYIYPA TMHNTLLFFT QKGRCYWQKC YEIPEGDKNS KGRAIQNMLN IEPDDAINAV
LRVKNFNDEE FLKSHYVVFA TKQGIIKKTR LDQYKNVRAA GVRAININEG DEVVGVRLTN
GNNELLLANR NGRAVRFHED QVRTMGRVST GVIGMRIDGG DDEVVGMVCV NDPATETIMV
VSENGYGKRS DIEDYRKTNR GTKGVKTLAV TEKTGRLVAI KVVTDENDLM IINKSGILIR
LKVADVRVMG RATQGVRLIN LTKKNDTIAS VCKVMSNQEE DVEEAEIVDE ELNQEQ
//
