ID A0A1V4LSY7_9PSED Unreviewed; 877 AA.
AC A0A1V4LSY7;
DT 07-JUN-2017, integrated into UniProtKB/TrEMBL.
DT 07-JUN-2017, sequence version 1.
DT 27-MAR-2024, entry version 29.
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=BZ163_10345 {ECO:0000313|EMBL:OPK10398.1};
OS Pseudomonas sp. VI4.1.
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Pseudomonadales;
OC Pseudomonadaceae; Pseudomonas.
OX NCBI_TaxID=1941346 {ECO:0000313|EMBL:OPK10398.1, ECO:0000313|Proteomes:UP000189889};
RN [1] {ECO:0000313|EMBL:OPK10398.1, ECO:0000313|Proteomes:UP000189889}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=VI4.1 {ECO:0000313|EMBL:OPK10398.1,
RC ECO:0000313|Proteomes:UP000189889};
RA Imperato V., Thijs S., Mcammond B., Douwen Y., Broeders P., Kowalkowski L.,
RA Gawronski S., Vangronsveld J.;
RT "Draft genome sequence of Pseudomonas yorbenii VI4.1, a hydrocarbonoclastic
RT isolate from crude oil contaminated soil in Bobrka, Poland.";
RL Submitted (FEB-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:OPK10398.1}.
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DR EMBL; MULM01000134; OPK10398.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A1V4LSY7; -.
DR Proteomes; UP000189889; 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..65
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 877 AA; 97611 MW; 9FCF8BCFB314EB02 CRC64;
MGKSLVIVES PAKAKTINKY LGNQYVVKSS IGHIRDLPTS GSASASKEPA AKRGKAAAGE
GPVLTPKEKA RKQLVSRMGV DPDHGWKAKY EILPGKEKVI EELRRLAKDA DTIYLATDLD
REGEAIAWHL REAIGGDDTR YKRVVFNEIT KKAIQEAFSK PGELDIDRVN AQQARRFLDR
VVGYMVSPLL WAKVARGLSA GRVQSVAVKL VVEREREIRA FNPEEYWEVH ADLGTAKGAT
VRFDVAREKG EAFKPLNEAQ AMAALEKLKS SSYSIVKRED KPTSSKPSAP FITSTLQQAA
SNRLGFGVKK TMMMAQRLYE AGYITYMRTD STNLSADAVT MARTYIEDEF GKKYLPENPN
VYSSKEGAQE AHEAIRPSDA NTEPSKLTGM ERDAERLYEL IWRQFLACQM LPAQYLSTTV
TVGAGDFELR AKGRILKFDG YTRVMPQIAK PGDDDVLPDM AQGDAMKLIK LDPTQHFTKP
PARYSEASLV KEMEKRGIGR PSTYAAIIST IQDRGYVALH NRRFYSEKMG DIVTERLAES
FSNLMDYGFT AGMEENLDDV AQGERDWKNV LDEFYGDFKK KLEVAESAEG GMRANQPVMT
DIPCVVCGRP MQIRTASTGV FLGCSGYSLP PKERCKATVN LVPGDEIAAD DEGESESLVL
RGKHRCPICS TAMDAYLLDE KRKLHICGNN PDCDGYEIEE GSYRIKGYEG PSLECDKCGS
EMQLKTGRFG KFFGCTNATC KNTRKLLKSG DAAPPKMDPV KMPELKCEKV NDTYILRDGA
SGLFLAASQF PKNRETRAPL VMEIVPHKDE IDPKYHFLCE APKKDPDGLP TVIRYSRKTK
EQYVQTEVDG KPTGWKAFYD GGKWTVEDKR PAKVAKA
//
