ID A0A182SZW5_9DIPT Unreviewed; 528 AA.
AC A0A182SZW5;
DT 07-SEP-2016, integrated into UniProtKB/TrEMBL.
DT 07-SEP-2016, sequence version 1.
DT 27-MAR-2024, entry version 31.
DE RecName: Full=DNA topoisomerase I {ECO:0000256|RuleBase:RU365101};
DE EC=5.6.2.1 {ECO:0000256|RuleBase:RU365101};
DE AltName: Full=DNA topoisomerase 1 {ECO:0000256|RuleBase:RU365101};
OS Anopheles maculatus.
OC Eukaryota; Metazoa; Ecdysozoa; Arthropoda; Hexapoda; Insecta; Pterygota;
OC Neoptera; Endopterygota; Diptera; Nematocera; Culicoidea; Culicidae;
OC Anophelinae; Anopheles; Anopheles maculatus group.
OX NCBI_TaxID=74869 {ECO:0000313|EnsemblMetazoa:AMAM016766-PA, ECO:0000313|Proteomes:UP000075901};
RN [1] {ECO:0000313|Proteomes:UP000075901}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=maculatus3 {ECO:0000313|Proteomes:UP000075901};
RG The Broad Institute Genomics Platform;
RA Neafsey D.E., Besansky N., Howell P., Walton C., Young S.K., Zeng Q.,
RA Gargeya S., Fitzgerald M., Haas B., Abouelleil A., Allen A.W., Alvarado L.,
RA Arachchi H.M., Berlin A.M., Chapman S.B., Gainer-Dewar J., Goldberg J.,
RA Griggs A., Gujja S., Hansen M., Howarth C., Imamovic A., Ireland A.,
RA Larimer J., McCowan C., Murphy C., Pearson M., Poon T.W., Priest M.,
RA Roberts A., Saif S., Shea T., Sisk P., Sykes S., Wortman J., Nusbaum C.,
RA Birren B.;
RT "The Genome Sequence of Anopheles maculatus species B.";
RL Submitted (SEP-2013) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EnsemblMetazoa:AMAM016766-PA}
RP IDENTIFICATION.
RC STRAIN=maculatus3 {ECO:0000313|EnsemblMetazoa:AMAM016766-PA};
RG EnsemblMetazoa;
RL Submitted (MAY-2020) to UniProtKB.
CC -!- FUNCTION: Releases the supercoiling and torsional tension of DNA
CC introduced during the DNA replication and transcription by transiently
CC cleaving and rejoining one strand of the DNA duplex. Introduces a
CC single-strand break via transesterification at the specific target site
CC 5'-[CT]CCTTp site in duplex DNA. The scissile phosphodiester is
CC attacked by the catalytic tyrosine of the enzyme, resulting in the
CC formation of a DNA-(3'-phosphotyrosyl)-enzyme intermediate and the
CC expulsion of a 5'-OH DNA strand. The free DNA strand then undergoes
CC passage around the unbroken strand thus removing DNA supercoils.
CC Finally, in the religation step, the DNA 5'-OH attacks the covalent
CC intermediate to expel the active-site tyrosine and restore the DNA
CC phosphodiester backbone. {ECO:0000256|RuleBase:RU365101}.
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,
CC ECO:0000256|RuleBase:RU365101};
CC -!- SIMILARITY: Belongs to the type IB topoisomerase family.
CC {ECO:0000256|ARBA:ARBA00006645, ECO:0000256|RuleBase:RU365101}.
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DR AlphaFoldDB; A0A182SZW5; -.
DR EnsemblMetazoa; AMAM016766-RA; AMAM016766-PA; AMAM016766.
DR VEuPathDB; VectorBase:AMAM016766; -.
DR OrthoDB; 10940at2759; -.
DR Proteomes; UP000075901; Unassembled WGS sequence.
DR GO; GO:0005694; C:chromosome; IEA:InterPro.
DR GO; GO:0005634; C:nucleus; IEA:UniProt.
DR GO; GO:0003677; F:DNA binding; IEA:UniProtKB-UniRule.
DR GO; GO:0003917; F:DNA topoisomerase type I (single strand cut, ATP-independent) activity; IEA:UniProtKB-UniRule.
DR GO; GO:0006265; P:DNA topological change; IEA:UniProtKB-UniRule.
DR CDD; cd00659; Topo_IB_C; 1.
DR CDD; cd03488; Topoisomer_IB_N_htopoI_like; 1.
DR Gene3D; 1.10.132.10; -; 1.
DR Gene3D; 2.170.11.10; DNA Topoisomerase I, domain 2; 1.
DR Gene3D; 1.10.10.41; Yeast DNA topoisomerase - domain 1; 1.
DR InterPro; IPR011010; DNA_brk_join_enz.
DR InterPro; IPR013034; DNA_topo_DNA_db_N_dom1.
DR InterPro; IPR013030; DNA_topo_DNA_db_N_dom2.
DR InterPro; IPR001631; TopoI.
DR InterPro; IPR018521; TopoI_AS.
DR InterPro; IPR025834; TopoI_C_dom.
DR InterPro; IPR014711; TopoI_cat_a-hlx-sub_euk.
DR InterPro; IPR014727; TopoI_cat_a/b-sub_euk.
DR InterPro; IPR013500; TopoI_cat_euk.
DR InterPro; IPR008336; TopoI_DNA-bd_euk.
DR InterPro; IPR036202; TopoI_DNA-bd_euk_N_sf.
DR InterPro; IPR013499; TopoI_euk.
DR InterPro; IPR048045; Topoisomer_I_DNA-bd.
DR PANTHER; PTHR10290:SF23; DNA TOPOISOMERASE 1; 1.
DR PANTHER; PTHR10290; DNA TOPOISOMERASE I; 1.
DR Pfam; PF14370; Topo_C_assoc; 1.
DR Pfam; PF01028; Topoisom_I; 1.
DR Pfam; PF02919; Topoisom_I_N; 1.
DR PRINTS; PR00416; EUTPISMRASEI.
DR SMART; SM00435; TOPEUc; 1.
DR SUPFAM; SSF56349; DNA breaking-rejoining enzymes; 1.
DR SUPFAM; SSF46596; Eukaryotic DNA topoisomerase I, dispensable insert domain; 1.
DR SUPFAM; SSF56741; Eukaryotic DNA topoisomerase I, N-terminal DNA-binding fragment; 1.
DR PROSITE; PS00176; TOPOISOMERASE_I_EUK; 1.
PE 3: Inferred from homology;
KW Coiled coil {ECO:0000256|SAM:Coils};
KW DNA-binding {ECO:0000256|ARBA:ARBA00023125, ECO:0000256|RuleBase:RU365101};
KW Isomerase {ECO:0000256|ARBA:ARBA00023235, ECO:0000256|RuleBase:RU365101};
KW Topoisomerase {ECO:0000256|ARBA:ARBA00023029,
KW ECO:0000256|RuleBase:RU365101}.
FT DOMAIN 162..528
FT /note="DNA topoisomerase I eukaryotic-type"
FT /evidence="ECO:0000259|SMART:SM00435"
FT COILED 112..139
FT /evidence="ECO:0000256|SAM:Coils"
FT COILED 445..507
FT /evidence="ECO:0000256|SAM:Coils"
SQ SEQUENCE 528 AA; 61858 MW; 51CAF758054A285A CRC64;
MESAQEVWEE EKRDDGVKWK YLEHKGPVFA PPYEPLPREI KFAYDGKEMV LSQGAEEVAG
FYARMLDHDY TSKAAFNDNF FKDWRKTMTQ HERERITDLR KCNFRPMAAY FAEIAEKNRN
RTKEEKAALK AANEQLTKEY GICVIDGHKE KIGNFKIEPP GLFRGRGEHP KMGLVKRRVM
PEDVIINCSK DSKIPSPPAG HRWKEVRHDN AVSWLASWTE NVQGQVKYIM LNPSSKLKGE
KDWQKYETAR RLLKHIDRIR ETYRDEWKSK EMRIRQRAVA MYFIDKLALR AGNEKDDDQA
DTVGCCSLRY EHIELHKELN GKENVVVFDF LGKDSIRYYN EVEVEKRVFK NLELFKENKK
PGDDLFDRLN TSVVNEYLKG LMDGLTAKVF RTFNASYTLQ KQLEELTDPD ASVPEKLLAY
NRANRAVAIL CNHQRAVPKT HEKSMGNLKE KIRQKREQVD KCQKELKDLK KSNVRDPSAF
EKKNKQLERL KDQLKKLELQ ETDRDENKTI ALGTSKLNYL DPRISVAW
//
