ID E4U574_OCEP5 Unreviewed; 825 AA.
AC E4U574;
DT 08-FEB-2011, integrated into UniProtKB/TrEMBL.
DT 08-FEB-2011, sequence version 1.
DT 27-MAR-2024, entry version 79.
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 OrderedLocusNames=Ocepr_2035 {ECO:0000313|EMBL:ADR37486.1};
OS Oceanithermus profundus (strain DSM 14977 / NBRC 100410 / VKM B-2274 /
OS 506).
OC Bacteria; Deinococcota; Deinococci; Thermales; Thermaceae; Oceanithermus.
OX NCBI_TaxID=670487 {ECO:0000313|EMBL:ADR37486.1, ECO:0000313|Proteomes:UP000008722};
RN [1] {ECO:0000313|Proteomes:UP000008722}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 14977 / NBRC 100410 / VKM B-2274 / 506
RC {ECO:0000313|Proteomes:UP000008722};
RG US DOE Joint Genome Institute (JGI-PGF);
RA Lucas S., Copeland A., Lapidus A., Bruce D., Goodwin L., Pitluck S.,
RA Kyrpides N., Mavromatis K., Pagani I., Ivanova N., Zhang X., Brettin T.,
RA Detter J.C., Tapia R., Han C., Land M., Hauser L., Markowitz V.,
RA Cheng J.-F., Hugenholtz P., Woyke T., Wu D., Tindall B., Faehnrich R.,
RA Brambilla E., Klenk H.-P., Eisen J.A.;
RT "The complete sequence of chromosome of Oceanithermus profundus DSM
RT 14977.";
RL Submitted (NOV-2010) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:ADR37486.1, ECO:0000313|Proteomes:UP000008722}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 14977 / NBRC 100410 / VKM B-2274 / 506
RC {ECO:0000313|Proteomes:UP000008722};
RX PubMed=21677858; DOI=10.4056/sigs.1734292;
RA Pati A., Zhang X., Lapidus A., Nolan M., Lucas S., Del Rio T.G., Tice H.,
RA Cheng J.F., Tapia R., Han C., Goodwin L., Pitluck S., Liolios K.,
RA Pagani I., Ivanova N., Mavromatis K., Chen A., Palaniappan K., Hauser L.,
RA Jeffries C.D., Brambilla E.M., Rohl A., Mwirichia R., Rohde M.,
RA Tindall B.J., Sikorski J., Wirth R., Goker M., Woyke T., Detter J.C.,
RA Bristow J., Eisen J.A., Markowitz V., Hugenholtz P., Kyrpides N.C.,
RA Klenk H.P., Land M.;
RT "Complete genome sequence of Oceanithermus profundus type strain (506).";
RL Stand. Genomic Sci. 4:210-220(2011).
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}.
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DR EMBL; CP002361; ADR37486.1; -; Genomic_DNA.
DR RefSeq; WP_013458656.1; NC_014761.1.
DR AlphaFoldDB; E4U574; -.
DR STRING; 670487.Ocepr_2035; -.
DR KEGG; opr:Ocepr_2035; -.
DR eggNOG; COG0550; Bacteria.
DR eggNOG; COG0551; Bacteria.
DR HOGENOM; CLU_002929_4_3_0; -.
DR OrthoDB; 9804262at2; -.
DR Proteomes; UP000008722; 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:0003700; F:DNA-binding transcription factor activity; IEA:InterPro.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0006265; P:DNA topological change; IEA:UniProtKB-UniRule.
DR GO; GO:0006352; P:DNA-templated transcription initiation; IEA:InterPro.
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; IPR007630; RNA_pol_sigma70_r4.
DR InterPro; IPR013324; RNA_pol_sigma_r3/r4-like.
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; PF04545; Sigma70_r4; 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; SSF88659; Sigma3 and sigma4 domains of RNA polymerase sigma factors; 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 Reference proteome {ECO:0000313|Proteomes:UP000008722};
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 4..114
FT /note="Toprim"
FT /evidence="ECO:0000259|PROSITE:PS50880"
FT REGION 165..170
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT REGION 731..757
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 735..753
FT /note="Basic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 308
FT /note="O-(5'-phospho-DNA)-tyrosine intermediate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 34
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 141
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 144
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 149
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 310
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 496
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
SQ SEQUENCE 825 AA; 92694 MW; 2B47C26C1F1942B6 CRC64;
MSGKTLVVVE SPAKAKTIKK ILGPNYEVKA SVGHVADLPQ RDLGVDLEHD FEPKYVVKKE
KQKVVSDLKK AAGKAERVLL ATDPDREGEA ISWHVARLLD LDPQKPLRVH FHEITPRVIK
EAVKKPTPID QNLVDAQQAR RVLDRLVGYN LSPVLSAQFR QRALSAGRVQ SVALRLVTER
EAEIEAFVPK EYWTLTGTFD AGARFAAELY EIDGKRVLDK KKENFLITSE AQARAVEAEV
RAVPAWQVAA VERKEKRRHA LPPFTTSTLQ QAASSRLGWG AGRTMRVAQR LYEGVNLGPE
GPVGLITYMR TDSVRIAPEA IAEARAFIPE QYGPDYLPPK PNYYRGKKQG VQDAHEAIRP
TSVQRRPEQV KPFLSDEEFK LYDLIWRRFV ASQMTPAVYD QTAITVEGGK FTFRAAGSIL
KFDGFLRVWG RDQQEEQPLP EVDAGAPARL VELASEQHFT QPPPRYTDAS LVKKMEELGI
GRPSTYAPTI DTLERRAYVE RQGRALKPTE LGKRVIGFLV EHFPRVVAYE FTAQVEDRLD
EVEEGKQAWP AVVREFYEPF TEELSRVPRK TCPVCGRPLE IKVSRYGQFL GCTGYPECTY
TEPLEEKKEA EPIGEDCPKC GAPLVRKWGR YGSFIACSAY PKCDYTRDEA PSTGITCPKC
KEGEIVQKTS RRGKPYWRCN KQGCDFLVFD PPTEQTCPKC GWIMVKKGKR EVLKCSNPDC
EDYAYPNFKN RPPRGKAGGG RKKTRKKGAA KKKAGPKATW ADLEPFTAGL EEAERRLVVQ
VEGEGVPLEQ AAANLGVTAE EAAKLHKRAM FKLRMAYGRA KIKPR
//
