ID B4M707_DROVI Unreviewed; 1020 AA.
AC B4M707;
DT 23-SEP-2008, integrated into UniProtKB/TrEMBL.
DT 20-JAN-2016, sequence version 2.
DT 27-MAR-2024, entry version 101.
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};
GN Name=Dvir\GJ16891 {ECO:0000313|EMBL:EDW62574.2};
GN ORFNames=Dvir_GJ16891 {ECO:0000313|EMBL:EDW62574.2};
OS Drosophila virilis (Fruit fly).
OC Eukaryota; Metazoa; Ecdysozoa; Arthropoda; Hexapoda; Insecta; Pterygota;
OC Neoptera; Endopterygota; Diptera; Brachycera; Muscomorpha; Ephydroidea;
OC Drosophilidae; Drosophila.
OX NCBI_TaxID=7244 {ECO:0000313|EMBL:EDW62574.2, ECO:0000313|Proteomes:UP000008792};
RN [1] {ECO:0000313|EMBL:EDW62574.2, ECO:0000313|Proteomes:UP000008792}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Tucson 15010-1051.87 {ECO:0000313|Proteomes:UP000008792};
RX PubMed=17994087; DOI=10.1038/nature06341;
RG Drosophila 12 genomes consortium;
RA Clark A.G., Eisen M.B., Smith D.R., Bergman C.M., Oliver B., Markow T.A.,
RA Kaufman T.C., Kellis M., Gelbart W., Iyer V.N., Pollard D.A., Sackton T.B.,
RA Larracuente A.M., Singh N.D., Abad J.P., Abt D.N., Adryan B., Aguade M.,
RA Akashi H., Anderson W.W., Aquadro C.F., Ardell D.H., Arguello R.,
RA Artieri C.G., Barbash D.A., Barker D., Barsanti P., Batterham P.,
RA Batzoglou S., Begun D., Bhutkar A., Blanco E., Bosak S.A., Bradley R.K.,
RA Brand A.D., Brent M.R., Brooks A.N., Brown R.H., Butlin R.K., Caggese C.,
RA Calvi B.R., Bernardo de Carvalho A., Caspi A., Castrezana S.,
RA Celniker S.E., Chang J.L., Chapple C., Chatterji S., Chinwalla A.,
RA Civetta A., Clifton S.W., Comeron J.M., Costello J.C., Coyne J.A., Daub J.,
RA David R.G., Delcher A.L., Delehaunty K., Do C.B., Ebling H., Edwards K.,
RA Eickbush T., Evans J.D., Filipski A., Findeiss S., Freyhult E., Fulton L.,
RA Fulton R., Garcia A.C., Gardiner A., Garfield D.A., Garvin B.E., Gibson G.,
RA Gilbert D., Gnerre S., Godfrey J., Good R., Gotea V., Gravely B.,
RA Greenberg A.J., Griffiths-Jones S., Gross S., Guigo R., Gustafson E.A.,
RA Haerty W., Hahn M.W., Halligan D.L., Halpern A.L., Halter G.M., Han M.V.,
RA Heger A., Hillier L., Hinrichs A.S., Holmes I., Hoskins R.A., Hubisz M.J.,
RA Hultmark D., Huntley M.A., Jaffe D.B., Jagadeeshan S., Jeck W.R.,
RA Johnson J., Jones C.D., Jordan W.C., Karpen G.H., Kataoka E.,
RA Keightley P.D., Kheradpour P., Kirkness E.F., Koerich L.B., Kristiansen K.,
RA Kudrna D., Kulathinal R.J., Kumar S., Kwok R., Lander E., Langley C.H.,
RA Lapoint R., Lazzaro B.P., Lee S.J., Levesque L., Li R., Lin C.F., Lin M.F.,
RA Lindblad-Toh K., Llopart A., Long M., Low L., Lozovsky E., Lu J., Luo M.,
RA Machado C.A., Makalowski W., Marzo M., Matsuda M., Matzkin L.,
RA McAllister B., McBride C.S., McKernan B., McKernan K., Mendez-Lago M.,
RA Minx P., Mollenhauer M.U., Montooth K., Mount S.M., Mu X., Myers E.,
RA Negre B., Newfeld S., Nielsen R., Noor M.A., O'Grady P., Pachter L.,
RA Papaceit M., Parisi M.J., Parisi M., Parts L., Pedersen J.S., Pesole G.,
RA Phillippy A.M., Ponting C.P., Pop M., Porcelli D., Powell J.R.,
RA Prohaska S., Pruitt K., Puig M., Quesneville H., Ram K.R., Rand D.,
RA Rasmussen M.D., Reed L.K., Reenan R., Reily A., Remington K.A.,
RA Rieger T.T., Ritchie M.G., Robin C., Rogers Y.H., Rohde C., Rozas J.,
RA Rubenfield M.J., Ruiz A., Russo S., Salzberg S.L., Sanchez-Gracia A.,
RA Saranga D.J., Sato H., Schaeffer S.W., Schatz M.C., Schlenke T.,
RA Schwartz R., Segarra C., Singh R.S., Sirot L., Sirota M., Sisneros N.B.,
RA Smith C.D., Smith T.F., Spieth J., Stage D.E., Stark A., Stephan W.,
RA Strausberg R.L., Strempel S., Sturgill D., Sutton G., Sutton G.G., Tao W.,
RA Teichmann S., Tobari Y.N., Tomimura Y., Tsolas J.M., Valente V.L.,
RA Venter E., Venter J.C., Vicario S., Vieira F.G., Vilella A.J.,
RA Villasante A., Walenz B., Wang J., Wasserman M., Watts T., Wilson D.,
RA Wilson R.K., Wing R.A., Wolfner M.F., Wong A., Wong G.K., Wu C.I., Wu G.,
RA Yamamoto D., Yang H.P., Yang S.P., Yorke J.A., Yoshida K., Zdobnov E.,
RA Zhang P., Zhang Y., Zimin A.V., Baldwin J., Abdouelleil A., Abdulkadir J.,
RA Abebe A., Abera B., Abreu J., Acer S.C., Aftuck L., Alexander A., An P.,
RA Anderson E., Anderson S., Arachi H., Azer M., Bachantsang P., Barry A.,
RA Bayul T., Berlin A., Bessette D., Bloom T., Blye J., Boguslavskiy L.,
RA Bonnet C., Boukhgalter B., Bourzgui I., Brown A., Cahill P., Channer S.,
RA Cheshatsang Y., Chuda L., Citroen M., Collymore A., Cooke P., Costello M.,
RA D'Aco K., Daza R., De Haan G., DeGray S., DeMaso C., Dhargay N., Dooley K.,
RA Dooley E., Doricent M., Dorje P., Dorjee K., Dupes A., Elong R., Falk J.,
RA Farina A., Faro S., Ferguson D., Fisher S., Foley C.D., Franke A.,
RA Friedrich D., Gadbois L., Gearin G., Gearin C.R., Giannoukos G., Goode T.,
RA Graham J., Grandbois E., Grewal S., Gyaltsen K., Hafez N., Hagos B.,
RA Hall J., Henson C., Hollinger A., Honan T., Huard M.D., Hughes L.,
RA Hurhula B., Husby M.E., Kamat A., Kanga B., Kashin S., Khazanovich D.,
RA Kisner P., Lance K., Lara M., Lee W., Lennon N., Letendre F., LeVine R.,
RA Lipovsky A., Liu X., Liu J., Liu S., Lokyitsang T., Lokyitsang Y.,
RA Lubonja R., Lui A., MacDonald P., Magnisalis V., Maru K., Matthews C.,
RA McCusker W., McDonough S., Mehta T., Meldrim J., Meneus L., Mihai O.,
RA Mihalev A., Mihova T., Mittelman R., Mlenga V., Montmayeur A., Mulrain L.,
RA Navidi A., Naylor J., Negash T., Nguyen T., Nguyen N., Nicol R., Norbu C.,
RA Norbu N., Novod N., O'Neill B., Osman S., Markiewicz E., Oyono O.L.,
RA Patti C., Phunkhang P., Pierre F., Priest M., Raghuraman S., Rege F.,
RA Reyes R., Rise C., Rogov P., Ross K., Ryan E., Settipalli S., Shea T.,
RA Sherpa N., Shi L., Shih D., Sparrow T., Spaulding J., Stalker J.,
RA Stange-Thomann N., Stavropoulos S., Stone C., Strader C., Tesfaye S.,
RA Thomson T., Thoulutsang Y., Thoulutsang D., Topham K., Topping I.,
RA Tsamla T., Vassiliev H., Vo A., Wangchuk T., Wangdi T., Weiand M.,
RA Wilkinson J., Wilson A., Yadav S., Young G., Yu Q., Zembek L., Zhong D.,
RA Zimmer A., Zwirko Z., Jaffe D.B., Alvarez P., Brockman W., Butler J.,
RA Chin C., Gnerre S., Grabherr M., Kleber M., Mauceli E., MacCallum I.;
RT "Evolution of genes and genomes on the Drosophila phylogeny.";
RL Nature 450:203-218(2007).
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 EMBL; CH940653; EDW62574.2; -; Genomic_DNA.
DR RefSeq; XP_002057088.2; XM_002057052.2.
DR AlphaFoldDB; B4M707; -.
DR SMR; B4M707; -.
DR STRING; 7244.B4M707; -.
DR EnsemblMetazoa; FBtr0441979; FBpp0398480; FBgn0204070.
DR eggNOG; KOG0981; Eukaryota.
DR HOGENOM; CLU_009193_0_0_1; -.
DR InParanoid; B4M707; -.
DR Proteomes; UP000008792; 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 Reference proteome {ECO:0000313|Proteomes:UP000008792};
KW Topoisomerase {ECO:0000256|ARBA:ARBA00023029,
KW ECO:0000256|RuleBase:RU365101}.
FT DOMAIN 617..992
FT /note="DNA topoisomerase I eukaryotic-type"
FT /evidence="ECO:0000259|SMART:SM00435"
FT REGION 1..239
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT REGION 326..451
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COILED 567..594
FT /evidence="ECO:0000256|SAM:Coils"
FT COILED 900..966
FT /evidence="ECO:0000256|SAM:Coils"
FT COMPBIAS 7..28
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 42..59
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 60..122
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 153..175
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 176..215
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 340..363
FT /note="Acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 364..380
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 409..451
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ SEQUENCE 1020 AA; 117557 MW; E560EDB01CE73737 CRC64;
MSGDVAAENN VHVQNGGSCE VQSNGVTTNG HHHHHHHHHS SSNSNSNSNS NSGGNSSSKH
KSSSKDKHRD KERSEHKSSS SSREHKSSSS SSRDKDKHKS SSSSSSSGKD KHRDKERDSS
NSHRSSSSSS SSHRDKDGKH KSSSSHHHHK SGSSSSSSKD RDRRDKDRSS SSSSSSRDKH
KSSSSSSSRH KGSSSSSSSK SKHSSSSSRH GSSTKDPSYD GVFVKPEPVS QPHTNDHDDP
LLQLQQLQQL QQQQHLQQQQ QLQQQQQLQL QLQQQHLQQL QQQSECNGYK NGYEEHIMDV
KKEEDNFDLS QASSCDYSMS QFRADEPSFV AKQEATYTED DSALNDDDDD YDNDNDNDNN
DDDEDMPLAM RKRKQEPSDE MDGAEDDDDD IPLLARKKIK KEAKDKKNKK KRPKEELDDE
YGSAKPKKKK VKKENEIKAE PVSPTKRSRK DKKDEEEEVW RWWEEEKRED GVKWTTLEHK
GPVFAPPYER MPRNVRFYYD GKPLELSEET EEAATFYAKM LNHDYCTKDV FNNNFFKDFR
KSMTPKEKEI IKDFRKCNFQ EMHQFFLAES EKRKAATKEE KLAKKNENEA LIKEYGFCMI
DGHKEKIGNF RLEPPGLFRG RGEHPKMGMI KRRIAAADVS INCGKQSKVP QPPPGERWKE
VRHDNTVTWL ASWTENVQGQ VKYIMLNPSS KLKGEKDHIK YETARRLDKF IDKIRATYRD
EWKSKEMRVR QRAVALYFID KLALRAGNEK DEDQADTVGC CSLRVEHVQL HKELNGKENV
VVFDFPGKDS IRYYNEVEVE KRVFKNLELF MENKKDGDDL FDRLNTQVLN EHLKELMDGL
TAKVFRTYNA SKTLQNQLDL LTDSNASVAE KLLTYNRANR AVAILCNHQR SVPKGHQKSM
ENLKEKIRAK RDAIDDCEAE YHDLKKAAKR GSVKERVIAD KKGKILERLK DQLKKLELQE
TDRDENKTIA LGTSKLNYLD PRITVAWCKK YGVPIEKIFN KTHRTKFLWA IHMADENYRF
//
