ID A5D2W4_PELTS Unreviewed; 714 AA.
AC A5D2W4;
DT 12-JUN-2007, integrated into UniProtKB/TrEMBL.
DT 12-JUN-2007, sequence version 1.
DT 27-MAR-2024, entry version 109.
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:0000313|EMBL:BAF59427.1};
GN Synonyms=topA {ECO:0000256|HAMAP-Rule:MF_00952};
GN OrderedLocusNames=PTH_1246 {ECO:0000313|EMBL:BAF59427.1};
OS Pelotomaculum thermopropionicum (strain DSM 13744 / JCM 10971 / SI).
OC Bacteria; Bacillota; Clostridia; Eubacteriales; Desulfotomaculaceae;
OC Pelotomaculum.
OX NCBI_TaxID=370438 {ECO:0000313|EMBL:BAF59427.1, ECO:0000313|Proteomes:UP000006556};
RN [1] {ECO:0000313|Proteomes:UP000006556}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 13744 / JCM 10971 / SI {ECO:0000313|Proteomes:UP000006556};
RX PubMed=18218977; DOI=10.1101/gr.7136508;
RA Kosaka T., Kato S., Shimoyama T., Ishii S., Abe T., Watanabe K.;
RT "The genome of Pelotomaculum thermopropionicum reveals niche-associated
RT evolution in anaerobic microbiota.";
RL Genome Res. 18:442-448(2008).
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}.
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DR EMBL; AP009389; BAF59427.1; -; Genomic_DNA.
DR AlphaFoldDB; A5D2W4; -.
DR STRING; 370438.PTH_1246; -.
DR KEGG; pth:PTH_1246; -.
DR eggNOG; COG0550; Bacteria.
DR HOGENOM; CLU_002929_4_3_9; -.
DR Proteomes; UP000006556; Chromosome.
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; 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 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; PF01131; Topoisom_bac; 1.
DR Pfam; PF01751; Toprim; 1.
DR Pfam; PF01396; zf-C4_Topoisom; 3.
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; 2.
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 Reference proteome {ECO:0000313|Proteomes:UP000006556};
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..114
FT /note="Toprim"
FT /evidence="ECO:0000259|PROSITE:PS50880"
FT REGION 163..168
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT REGION 694..714
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 299
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 139
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 140
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 143
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 148
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 155
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 301
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 494
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
SQ SEQUENCE 714 AA; 80932 MW; 01C4EFEDDEBEB398 CRC64;
MSKTLVIVES PAKAKTISKF LGKKFTVKAS MGHVRDLPKS QFGVDVKNGF KPKYITIRGK
GDIIKDLRAA VKKADQVLIA SDPDREGEAI AWHLQNLLEI DENESCRIEF NEITKQAIQK
ALQHPRPIDR NRVNAQQARR ILDRLVGYNL SPLLWRKIKK GLSAGRVQSV AVRLICDREE
EIQSFVPEEY WTLVASFVKT GEAPFEGRLI KFRDEKIDIP SKEKMQEVLE NLKGARYTVE
KVTRKEKSRK PPLPFITSTL QQEAYRKLNF TARKTMMVAQ QLYEGLDLGR EGTSGLITYI
RTDSTRVSAS AREEAQKYIV ERFGARYAGR ETPPVGPAGR KGKIQDAHEA IRPTSVQREP
EQVKEYLTGD QYKLYKLIWS RFLASQMKPA VFDTTNIDIK AGEYLFRANG SVMKFPGFMK
VYTESRDDEE KEEEKLLPEL KEGEEIEARS LTPRQHFTQP PPRYTDASLV RALEEKGIGR
PSTYAPIVET ILKRGYVVRE NKQFFPTELG MIVVDLLKKH FKEIIDIDFT AGMEESLDSI
EEGELDWIKV LESFYGPFKN TLEKAENEIG HVQVAEEVTE EKCDRCGRSM VVKVGRYGKF
LACPGFPECR STKPLLEPVG AKCPRCEGEL VVRRTKKGRK FLGCSNFPEC EFVTWDQPSG
TKCPECGGLM VEKKNAGKKG FLQCVSEDCG YKKTAGEKKA GKKNADTESM SAET
//
