ID E4Q5B6_CALOW Unreviewed; 693 AA.
AC E4Q5B6;
DT 08-FEB-2011, integrated into UniProtKB/TrEMBL.
DT 08-FEB-2011, sequence version 1.
DT 27-MAR-2024, entry version 76.
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=Calow_1871 {ECO:0000313|EMBL:ADQ05400.1};
OS Caldicellulosiruptor owensensis (strain ATCC 700167 / DSM 13100 / OL).
OC Bacteria; Bacillota; Clostridia; Caldicellulosiruptorales;
OC Caldicellulosiruptoraceae; Caldicellulosiruptor.
OX NCBI_TaxID=632518 {ECO:0000313|EMBL:ADQ05400.1, ECO:0000313|Proteomes:UP000006889};
RN [1]
RP NUCLEOTIDE SEQUENCE.
RC STRAIN=OL;
RG US DOE Joint Genome Institute;
RA Lucas S., Copeland A., Lapidus A., Cheng J.-F., Bruce D., Goodwin L.,
RA Pitluck S., Davenport K., Detter J.C., Han C., Tapia R., Land M.,
RA Hauser L., Chang Y.-J., Jeffries C., Kyrpides N., Ivanova N.,
RA Mikhailova N., Blumer-Schuette S.E., Kelly R.M., Woyke T.;
RT "Complete sequence of Caldicellulosiruptor owensensis OL.";
RL Submitted (SEP-2010) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:ADQ05400.1, ECO:0000313|Proteomes:UP000006889}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 700167 / DSM 13100 / OL
RC {ECO:0000313|Proteomes:UP000006889};
RX PubMed=21216991; DOI=10.1128/JB.01515-10;
RA Blumer-Schuette S.E., Ozdemir I., Mistry D., Lucas S., Lapidus A.,
RA Cheng J.F., Goodwin L.A., Pitluck S., Land M.L., Hauser L.J., Woyke T.,
RA Mikhailova N., Pati A., Kyrpides N.C., Ivanova N., Detter J.C.,
RA Walston-Davenport K., Han S., Adams M.W., Kelly R.M.;
RT "Complete genome sequences for the anaerobic, extremely thermophilic plant
RT biomass-degrading bacteria Caldicellulosiruptor hydrothermalis,
RT Caldicellulosiruptor kristjanssonii, Caldicellulosiruptor kronotskyensis,
RT Caldicellulosiruptor owensenis, and Caldicellulosiruptor lactoaceticus.";
RL J. Bacteriol. 193:1483-1484(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}.
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DR EMBL; CP002216; ADQ05400.1; -; Genomic_DNA.
DR AlphaFoldDB; E4Q5B6; -.
DR STRING; 632518.Calow_1871; -.
DR KEGG; cow:Calow_1871; -.
DR eggNOG; COG0550; Bacteria.
DR HOGENOM; CLU_002929_4_3_9; -.
DR OrthoDB; 9804262at2; -.
DR Proteomes; UP000006889; 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; 1.
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; 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:UP000006889};
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 2..112
FT /note="Toprim"
FT /evidence="ECO:0000259|PROSITE:PS50880"
FT REGION 162..167
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT ACT_SITE 297
FT /note="O-(5'-phospho-DNA)-tyrosine intermediate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 32
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 138
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 142
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 147
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 154
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 299
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 489
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
SQ SEQUENCE 693 AA; 79713 MW; 0F95AF6B54EBDF3A CRC64;
MKKLVIVESP AKAKTIAKYL GKEFKVEASM GHVRDLPKSD LGVDIENGFV PKYINIRGKA
DVINRLKKSA ESAEKVYLAT DPDREGEAIS WHLATILGLD VNDNVRITFN EITKKAVQES
LKNARPIDQN LVNAQQARRV LDRLVGYKLS PFLWEKVKGG LSAGRVQSVA TRLVVEREEE
IENFKPEEYW TLEAVFKKDN QEFKAKFYGD KKGKIELKNQ GQVQEIEEKI KNKEFKVVKI
KVSEKKKNPP PPFITSTLQQ EASRKLRFTP AKTMAIAQML YEGVEIKGEG SIGLITYMRT
DSTRISEEAQ QAARNLIMQK FGREYLPEKP RVYKTKKDAQ DAHEAIRPTY LEMDPESIKD
SLTPDQYKLY KLIYDRFLAS QMESSIYDVL SAELEVEGYV FRLTGSKLKF AGFMEVYVEG
KDTEDEEEES QLPEISEGEV LKPIKLESKQ HFTQPPSRYT EATLIKALEE KGIGRPSTYA
PTIQTILERG YVVKEDRFLK PTELGKLVTN ILKEYFKDII DIEFTAELES NLDKIEEGKL
EWTDVVRKYY QPLEKELEIA RNTMNKVKVE DEETDIVCEN CGRKMVIKKG RYGKFLACPG
YPECKNTKPY YHCLEVLCPK CRKRIIERKS KKGKKYYTCE EYPACDLILW EKPVKNCPKC
GSLMYEKGRK GNKKLVCSNE NCLHEEKIGE KGE
//
