ID A0A2S8Y9M2_9PSED Unreviewed; 873 AA.
AC A0A2S8Y9M2;
DT 18-JUL-2018, integrated into UniProtKB/TrEMBL.
DT 18-JUL-2018, sequence version 1.
DT 27-MAR-2024, entry version 25.
DE RecName: Full=DNA topoisomerase 1 {ECO:0000256|HAMAP-Rule:MF_00952};
DE EC=5.6.2.1 {ECO:0000256|HAMAP-Rule:MF_00952};
DE AltName: Full=DNA topoisomerase I {ECO:0000256|HAMAP-Rule:MF_00952};
GN Name=topA {ECO:0000256|HAMAP-Rule:MF_00952};
GN ORFNames=CQZ98_12855 {ECO:0000313|EMBL:PRA54244.1};
OS Pseudomonas sp. MYb115.
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Pseudomonadales;
OC Pseudomonadaceae; Pseudomonas.
OX NCBI_TaxID=1848717 {ECO:0000313|EMBL:PRA54244.1, ECO:0000313|Proteomes:UP000239970};
RN [1] {ECO:0000313|EMBL:PRA54244.1, ECO:0000313|Proteomes:UP000239970}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=MYb115 {ECO:0000313|EMBL:PRA54244.1,
RC ECO:0000313|Proteomes:UP000239970};
RA Zimmermann J., Obeng N., Yang W., Obeng O., Kissoyan K., Pees B.,
RA Dirksen P., Hoppner M., Franke A., Rosenstiel P., Leippe M., Dierking K.,
RA Kaleta C., Schulenburg H.;
RT "Genomic, metabolic, and phenotypic characteristics of bacterial isolates
RT from the natural microbiome of the model nematode Caenorhabditis elegans.";
RL Submitted (SEP-2017) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Releases the supercoiling and torsional tension of DNA, which
CC is introduced during the DNA replication and transcription, by
CC transiently cleaving and rejoining one strand of the DNA duplex.
CC Introduces a single-strand break via transesterification at a target
CC site in duplex DNA. The scissile phosphodiester is attacked by the
CC catalytic tyrosine of the enzyme, resulting in the formation of a DNA-
CC (5'-phosphotyrosyl)-enzyme intermediate and the expulsion of a 3'-OH
CC DNA strand. The free DNA strand then undergoes passage around the
CC unbroken strand, thus removing DNA supercoils. Finally, in the
CC religation step, the DNA 3'-OH attacks the covalent intermediate to
CC expel the active-site tyrosine and restore the DNA phosphodiester
CC backbone. {ECO:0000256|HAMAP-Rule:MF_00952}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=ATP-independent breakage of single-stranded DNA, followed by
CC passage and rejoining.; EC=5.6.2.1;
CC Evidence={ECO:0000256|ARBA:ARBA00000213, ECO:0000256|HAMAP-
CC Rule:MF_00952};
CC -!- SUBUNIT: Monomer. {ECO:0000256|HAMAP-Rule:MF_00952}.
CC -!- SIMILARITY: Belongs to the type IA topoisomerase family.
CC {ECO:0000256|ARBA:ARBA00009446, ECO:0000256|HAMAP-Rule:MF_00952}.
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:PRA54244.1}.
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DR EMBL; PCQM01000007; PRA54244.1; -; Genomic_DNA.
DR RefSeq; WP_027617977.1; NZ_PCQM01000007.1.
DR AlphaFoldDB; A0A2S8Y9M2; -.
DR Proteomes; UP000239970; Unassembled WGS sequence.
DR GO; GO:0005694; C:chromosome; IEA:InterPro.
DR GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR GO; GO:0003917; F:DNA topoisomerase type I (single strand cut, ATP-independent) activity; IEA:UniProtKB-UniRule.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0006265; P:DNA topological change; IEA:UniProtKB-UniRule.
DR CDD; cd00186; TOP1Ac; 1.
DR CDD; cd03363; TOPRIM_TopoIA_TopoI; 1.
DR Gene3D; 2.20.25.10; -; 1.
DR Gene3D; 3.40.50.140; -; 1.
DR Gene3D; 3.30.65.10; Bacterial Topoisomerase I, domain 1; 3.
DR Gene3D; 1.10.460.10; Topoisomerase I, domain 2; 1.
DR Gene3D; 2.70.20.10; Topoisomerase I, domain 3; 1.
DR Gene3D; 1.10.290.10; Topoisomerase I, domain 4; 1.
DR HAMAP; MF_00952; Topoisom_1_prok; 1.
DR InterPro; IPR049330; TOP1_Znf.
DR InterPro; IPR000380; Topo_IA.
DR InterPro; IPR003601; Topo_IA_2.
DR InterPro; IPR023406; Topo_IA_AS.
DR InterPro; IPR013497; Topo_IA_cen.
DR InterPro; IPR013824; Topo_IA_cen_sub1.
DR InterPro; IPR013825; Topo_IA_cen_sub2.
DR InterPro; IPR013826; Topo_IA_cen_sub3.
DR InterPro; IPR023405; Topo_IA_core_domain.
DR InterPro; IPR003602; Topo_IA_DNA-bd_dom.
DR InterPro; IPR013498; Topo_IA_Znf.
DR InterPro; IPR005733; TopoI_bac-type.
DR InterPro; IPR013263; TopoI_Znr_bac.
DR InterPro; IPR028612; Topoisom_1_IA.
DR InterPro; IPR006171; TOPRIM_domain.
DR InterPro; IPR034149; TOPRIM_TopoI.
DR NCBIfam; TIGR01051; topA_bact; 1.
DR PANTHER; PTHR42785:SF1; DNA TOPOISOMERASE; 1.
DR PANTHER; PTHR42785; DNA TOPOISOMERASE, TYPE IA, CORE; 1.
DR Pfam; PF21372; TOP1_ZnF; 1.
DR Pfam; PF08272; Topo_Zn_Ribbon; 2.
DR Pfam; PF01131; Topoisom_bac; 1.
DR Pfam; PF01751; Toprim; 1.
DR Pfam; PF01396; zf-C4_Topoisom; 2.
DR PRINTS; PR00417; PRTPISMRASEI.
DR SMART; SM00437; TOP1Ac; 1.
DR SMART; SM00436; TOP1Bc; 1.
DR SMART; SM00493; TOPRIM; 1.
DR SUPFAM; SSF56712; Prokaryotic type I DNA topoisomerase; 1.
DR SUPFAM; SSF57783; Zinc beta-ribbon; 3.
DR PROSITE; PS00396; TOPOISOMERASE_I_PROK; 1.
DR PROSITE; PS50880; TOPRIM; 1.
PE 3: Inferred from homology;
KW DNA-binding {ECO:0000256|ARBA:ARBA00023125, ECO:0000256|HAMAP-
KW Rule:MF_00952};
KW Isomerase {ECO:0000256|ARBA:ARBA00023235, ECO:0000256|HAMAP-Rule:MF_00952};
KW Magnesium {ECO:0000256|ARBA:ARBA00022842};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723};
KW Topoisomerase {ECO:0000256|ARBA:ARBA00023029, ECO:0000256|HAMAP-
KW Rule:MF_00952}; Zinc {ECO:0000256|ARBA:ARBA00022833};
KW Zinc-finger {ECO:0000256|ARBA:ARBA00022771}.
FT DOMAIN 3..149
FT /note="Toprim"
FT /evidence="ECO:0000259|PROSITE:PS50880"
FT REGION 37..68
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT REGION 199..204
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT ACT_SITE 326
FT /note="O-(5'-phospho-DNA)-tyrosine intermediate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 33
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 175
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 176
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 179
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 184
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 191
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 328
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 514
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
SQ SEQUENCE 873 AA; 97112 MW; E94BF302BCCBE442 CRC64;
MGKSLVIVES PAKAKTINKY LGNQYVVKSS IGHIRDLPTS GSASASKEPA AKRGKAAAGE
APALSPKEKA RKQLVARMGV DPDHGWKAKY EILPGKEKVI EELRRLAKDA DTIYLATDLD
REGEAIAWHL REAIGGDDSR YKRVVFNEIT KKAIQEAFSE PGELDIDRVN AQQARRFLDR
VVGYMVSPLL WSKIARGLSA GRVQSVAVKL VVEREREIRA FVPEEYWEVH ADLGTAKGAN
VRFEVARENG EAFKPLNEAQ AMAALEKLKS SSYTIAKRED KPTSSKPSAP FITSTLQQAA
SNRLGFGVKK TMMMAQRLYE AGYITYMRTD STNLSADAVA MARTYIEGEF GSKYLPETPN
VYSSKEGAQE AHEAIRPSDV NTDPSKLSGM ERDAERLYEL IWRQFVACQM LPAKYLSTTV
SVAASGFELR AKGRILKFDG YTRVMPQMTK PGDDDVLPDM AQGDVLKLIK LDPSQHFTKP
PARYSEASLV KEMEKRGIGR PSTYAAIIST IQDRGYVALH NRRFYSEKMG DIVTERLSES
FSNLMDYGFT AGMEENLDDV AQGERDWKNV LDEFYGDFKK KLEVAESPEN GMRANQPVMT
DIPCVTCGRP MQIRTASTGV FLGCSGYSLP PKERCKATVN LVPGDEIAAD DEGESESLVL
RGKHRCPICS TAMDAYLLDE KRKLHICGNN PDCDGYEIEE GSYRIKGYEG PSLECDKCGS
EMQLKTGRFG KFFGCTNATC KNTRKLLKSG DAAPPKMDPV KMPELKCEKV NDTYILRDGA
SGLFLAASQF PKNRETRAPL VLEIVPHKDE IDPKYHFLCE APKKDPDGLP AVIRYSRKTK
EQYVQTEVDG KPTGWKAFYD GGKWVVEDKR VAK
//
