ID A0A1M6F932_9FLAO Unreviewed; 844 AA.
AC A0A1M6F932;
DT 15-MAR-2017, integrated into UniProtKB/TrEMBL.
DT 15-MAR-2017, sequence version 1.
DT 27-MAR-2024, entry version 35.
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=SAMN04487908_10780 {ECO:0000313|EMBL:SHI94238.1};
OS Aequorivita viscosa.
OC Bacteria; Bacteroidota; Flavobacteriia; Flavobacteriales;
OC Flavobacteriaceae; Aequorivita.
OX NCBI_TaxID=797419 {ECO:0000313|EMBL:SHI94238.1, ECO:0000313|Proteomes:UP000184172};
RN [1] {ECO:0000313|Proteomes:UP000184172}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 26349 {ECO:0000313|Proteomes:UP000184172};
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}.
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DR EMBL; FQYV01000007; SHI94238.1; -; Genomic_DNA.
DR RefSeq; WP_073216692.1; NZ_FQYV01000007.1.
DR AlphaFoldDB; A0A1M6F932; -.
DR STRING; 797419.SAMN05216556_10881; -.
DR OrthoDB; 9806486at2; -.
DR Proteomes; UP000184172; 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:UP000184172};
KW Topoisomerase {ECO:0000256|ARBA:ARBA00023029, ECO:0000256|HAMAP-
KW Rule:MF_01897}.
FT DOMAIN 10..462
FT /note="DNA topoisomerase type IIA"
FT /evidence="ECO:0000259|SMART:SM00434"
FT REGION 812..844
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COILED 434..475
FT /evidence="ECO:0000256|SAM:Coils"
FT MOTIF 523..529
FT /note="GyrA-box"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01897"
FT COMPBIAS 830..844
FT /note="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 844 AA; 94910 MW; AF9AC150B31B78B4 CRC64;
MADGEKVIPI NIEDEMKSAY IDYSMSVIVS RALPDVRDGM KPVHRRVLFG MHELGIRATG
AHKKSARIVG EVLGKYHPHG DTSVYDAMVR MAQEWSLRYM LIDGQGNFGS VDGDSPAAMR
YTEARMQKIS EEMLADIDKE TVDHQLNFDD TLNEPTVLPT RVPGLLINGA SGIAVGMATN
MPPHNLTEII NGTIAYIDDN DIDVDGLMQH IKAPDFPTGG TIYGYEGVRE AFHTGRGRVV
MRAKATFEEV NGRECIIVTE IPYQVNKADM IKKTADLVNE KKIDGIANIR DESDRKGMRI
VYILKRDAIP NIVLNTLYKY TALQSSFSVN NIALVKGRPQ MLNLKELIHY FVEHRHEVVV
RRTEYLLRKA EERAHILEGL IIASDNIDEV IRLIRSSSNA DEARQKLIEA FKLSEIQAKA
IVEMRLRQLT GLEQDKLRSE YDELMKTIAD YKEILASVER RMEIIKEELV EIRNKYGDER
RSVIEYAGGD VSITDLIADE QVVITISHAG YIKRTSLTEY KTQNRGGVGQ KASATRNEDF
LEHLFVGTNH QYMLFFTQKG KCFWMRVFEI PEGTRTSKGR AIQNLINIEP DDSVKAFINT
QDLKDEDYIN SHYVIMATKK GQVKKTPLEQ YSRPRTNGIN AITIREDDEL LEAKLTTGDS
QVMLAVRSGK AIRFEEEKTR PMGRNASGVR GITLGSEDDE VIGMIAVNDS ESDILVVSEN
GYGKRSSIED YRITNRGGKG VKTINVTEKT GKLVAIKNVT DDDDLMIINR SGIAIRMAVD
SLRIMGRATQ GVRLIKVRED DAIAAVAKAM KDEDEVTMEN DQEQESETNG TILDSDDEQI
ENNE
//
