ID A0A0A2WS91_THEFI Unreviewed; 814 AA.
AC A0A0A2WS91;
DT 04-FEB-2015, integrated into UniProtKB/TrEMBL.
DT 27-MAY-2015, sequence version 2.
DT 27-MAR-2024, entry version 46.
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=THFILI_04890 {ECO:0000313|EMBL:KGQ21150.2};
OS Thermus filiformis.
OC Bacteria; Deinococcota; Deinococci; Thermales; Thermaceae; Thermus.
OX NCBI_TaxID=276 {ECO:0000313|EMBL:KGQ21150.2, ECO:0000313|Proteomes:UP000030364};
RN [1] {ECO:0000313|EMBL:KGQ21150.2, ECO:0000313|Proteomes:UP000030364}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 43280 {ECO:0000313|EMBL:KGQ21150.2,
RC ECO:0000313|Proteomes:UP000030364};
RA Mandelli F., Ramires B.O., Paixao D.A., Camilo C.M., Polikarpov I.,
RA Couger M.B., Prade R., Riano-Pachon D.M., Squina F.M.;
RT "Draft Genome Sequence of the thermophile Thermus filiformis ATCC43280
RT producer of carotenoid-(di)glucoside-branched fatty acids (di)esters.";
RL Submitted (FEB-2015) 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: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {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:KGQ21150.2}.
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DR EMBL; JPSL02000038; KGQ21150.2; -; Genomic_DNA.
DR RefSeq; WP_038066759.1; NZ_JPSL02000038.1.
DR AlphaFoldDB; A0A0A2WS91; -.
DR STRING; 276.THFILI_04890; -.
DR OrthoDB; 9804262at2; -.
DR Proteomes; UP000030364; 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 Gene3D; 3.40.50.140; -; 1.
DR Gene3D; 3.30.65.10; Bacterial Topoisomerase I, domain 1; 2.
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; 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; IPR028612; Topoisom_1_IA.
DR InterPro; IPR006171; TOPRIM_domain.
DR NCBIfam; TIGR01051; topA_bact; 1.
DR PANTHER; PTHR42785:SF1; DNA TOPOISOMERASE; 1.
DR PANTHER; PTHR42785; DNA TOPOISOMERASE, TYPE IA, CORE; 1.
DR Pfam; PF01131; Topoisom_bac; 1.
DR Pfam; PF01751; Toprim; 1.
DR Pfam; PF01396; zf-C4_Topoisom; 4.
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; 1.
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 17..126
FT /note="Toprim"
FT /evidence="ECO:0000259|PROSITE:PS50880"
FT REGION 177..182
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT REGION 269..289
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 324
FT /note="O-(5'-phospho-DNA)-tyrosine intermediate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 47
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 152
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 153
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 156
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 161
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 326
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 519
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
SQ SEQUENCE 814 AA; 92168 MW; E9E79464915B5704 CRC64;
MPNPSRPRKE KGVGPARTLV VVESPAKAKS LSKMLGDGFE VRASKGHVAD LPERTLGVDV
ERDFAPTYEV KKEKKEVVEE LKKAARGKRV LIATDPDREG EAIGWHLARL LGLDPQEPLR
VEFHEITPKV VRQAVQAPRP INQNLVDAQQ ARRVLDRLLG YNLSPLLSLE FRKRALSAGR
VQSVALRLVV EREEEIEAFR PEVYHLVLGR FRVEGQDVEV EARLQEVRGQ RLWLGEGEKE
GKLHLKEEAQ VQALLSELAR ASYRVGKVEV KERRKSPPPP FTTSTLQQAA SSRLGYTASR
TMRIAQRLYE GVDLPEGTVG LITYMRTDSV RVSPEAVERA REVIGQVFGR EFLPEAPRAY
RNKKAGVQDA HEAIRPTDPA RTPEAVRKYL SEEEYRLYDL IWRRFLASQM KDALYETTSA
LLPSLDGAFV FRASGSVLKF EGYLRAWGRG AEEASPEEEP PLPPLLEGSP ARLLEARAER
KTTEPPPRYT DATLVKTLEE LGIGRPSTYA PTLETLEKRA YIRRQGRTLF PTPLGREVVG
YLRAHFPRVV AYDFTAQMED RLDEVEEGRA VWPRVVWEFY APFLEELSQV PKKTCPRCGR
PLELKVSRYG QFLGCTGYPE CTYTEPLEKR ESEPLEEACP KCGRPLVRKT GRYGRFIACS
GYPECDYTRD EAPSTGILCP KCKKGEVLEK RSKRGKPYYR CSEKGCDFLS FYPLLPEACP
KCGWNLVQKG KAKACSNPDC PDYAGPSRER KQGPEKPRDW KDLLAFKDRL DSKERAVLEK
VDSGSPLTQE EEALFKKALF KLRMAKGRAQ KMKA
//
