ID S6HJ06_9GAMM Unreviewed; 886 AA.
AC S6HJ06;
DT 16-OCT-2013, integrated into UniProtKB/TrEMBL.
DT 16-OCT-2013, sequence version 1.
DT 27-MAR-2024, entry version 53.
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=OFPII_30910 {ECO:0000313|EMBL:EPJ44947.1};
OS Osedax symbiont Rs1.
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Oceanospirillales;
OC Oceanospirillaceae.
OX NCBI_TaxID=1330036 {ECO:0000313|EMBL:EPJ44947.1, ECO:0000313|Proteomes:UP000014822};
RN [1] {ECO:0000313|EMBL:EPJ44947.1, ECO:0000313|Proteomes:UP000014822}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Rs1 {ECO:0000313|Proteomes:UP000014822};
RA Yi H., Goffredi S.;
RT "Comparative genomics of two novel heterotrophic symbionts of deep-sea
RT Osedax worms: functional variation and environmental selection.";
RL Submitted (MAY-2013) 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:EPJ44947.1}.
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DR EMBL; ASZJ01000144; EPJ44947.1; -; Genomic_DNA.
DR AlphaFoldDB; S6HJ06; -.
DR PATRIC; fig|1330036.3.peg.2953; -.
DR Proteomes; UP000014822; 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:UP000014822};
KW Topoisomerase {ECO:0000256|ARBA:ARBA00023029, ECO:0000256|HAMAP-
KW Rule:MF_01897}.
FT DOMAIN 11..499
FT /note="DNA topoisomerase type IIA"
FT /evidence="ECO:0000259|SMART:SM00434"
FT REGION 841..886
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT MOTIF 560..566
FT /note="GyrA-box"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01897"
FT COMPBIAS 856..874
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 122
FT /note="O-(5'-phospho-DNA)-tyrosine intermediate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01897"
SQ SEQUENCE 886 AA; 97659 MW; DBB4082863CD6FDC CRC64;
MGDLVKQIVP VNIEDEMKQS YLDYAMSVIV GRALPDVRDG LKPVHRRVLF AMSELKNDWN
KPYLKSARVV GDVIGKYHPH GDSAVYDTIV RMAQNFSLRY MLIDGQGNFG SVDGDSAAAM
RYTEIRMRKI SHDLLADLDK ETVDYVPNYD GTIQIPAVLP TRLPNLLLNG SSGIAVGMAT
NIPPHNLTEV VNGCLALIDN PDLDIDGLME YIPGPDFPTG AIINGRAGIL LAYRTGRGRI
YLRSKYHVEQ VNAAGKEAII VTEIPYQLNK SRLIERIAEL VKDKKLEGIT ELRDESDKDG
MRIVIELRRG EVTEIIANNL FSQTQMEGVF GINMVALVDG QPKLLNLKDM LVNFVRHRRE
VVTRRTVYLL RKARERGHVL EGLAIALANI DPVIQMIKSS ESPADAKERL INNAWDPGSV
TEMLASTGEH ACRPDDLEEQ YGMRDGKYYL SPVQAQAILD LRLHRLTGLE HEKLIAEYAE
LLVKIAGFLE ILGSFTVLMN IIREELRAII DEYGDERKTE IIASRQDLTV ADLITEEDMV
VTISHGGYAK SQPLTDYQAQ RRGGKGKSVT AVKDEDFVEH LLIASTHDTI LCFSNFGKVY
WLKVFEIPVA SRAARGRPII NILPLAEGER ISTILPVNEY SEDRFVFMAT ASGTVKKTSL
VNFARPRSSG LIAVDLLDDD ALIGAAITEG DDDILLVTSA GKAARFHETD VRAMGRTARG
VRGVKMKDAA KVISLIIPKE GGKILTASEN GFGKQTEVSD FPCKGRGNQG VIGQQCTDRN
GGIAGAVQVF TGDDVMLISD QGTMVRTRTS EIGVLGRNTQ GVRLIRVVEG ESLVGIARIQ
EPTEEDEEQI EEVTDENQQS TENVDAVNET AADSVDDSSS DDTEQS
//
