ID J2KCI4_9FLAO Unreviewed; 843 AA.
AC J2KCI4;
DT 03-OCT-2012, integrated into UniProtKB/TrEMBL.
DT 03-OCT-2012, sequence version 1.
DT 27-MAR-2024, entry version 68.
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 ORFNames=PMI13_02633 {ECO:0000313|EMBL:EJL70878.1};
OS Chryseobacterium populi.
OC Bacteria; Bacteroidota; Flavobacteriia; Flavobacteriales; Weeksellaceae;
OC Chryseobacterium group; Chryseobacterium.
OX NCBI_TaxID=1144316 {ECO:0000313|EMBL:EJL70878.1, ECO:0000313|Proteomes:UP000007509};
RN [1] {ECO:0000313|EMBL:EJL70878.1, ECO:0000313|Proteomes:UP000007509}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CF314 {ECO:0000313|EMBL:EJL70878.1,
RC ECO:0000313|Proteomes:UP000007509};
RX PubMed=23045501; DOI=10.1128/JB.01243-12;
RA Brown S.D., Utturkar S.M., Klingeman D.M., Johnson C.M., Martin S.L.,
RA Land M.L., Lu T.Y., Schadt C.W., Doktycz M.J., Pelletier D.A.;
RT "Twenty-one genome sequences from Pseudomonas species and 19 genome
RT sequences from diverse bacteria isolated from the rhizosphere and
RT endosphere of Populus deltoides.";
RL J. Bacteriol. 194:5991-5993(2012).
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}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:EJL70878.1}.
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DR EMBL; AKJY01000049; EJL70878.1; -; Genomic_DNA.
DR RefSeq; WP_007844344.1; NZ_AKJY01000049.1.
DR AlphaFoldDB; J2KCI4; -.
DR PATRIC; fig|1144316.3.peg.2651; -.
DR OrthoDB; 9804262at2; -.
DR Proteomes; UP000007509; Unassembled WGS sequence.
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; 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; IPR005733; TopoI_bac-type.
DR InterPro; IPR028612; Topoisom_1_IA.
DR InterPro; IPR025589; Toprim_C_rpt.
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; PF13368; Toprim_C_rpt; 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 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 Topoisomerase {ECO:0000256|ARBA:ARBA00023029, ECO:0000256|HAMAP-
KW Rule:MF_00952}.
FT DOMAIN 3..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 283
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 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 154
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 285
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 473
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
SQ SEQUENCE 843 AA; 95750 MW; 9F796E4542D72C09 CRC64;
MSKNLVIVES PAKAKTIQKY LGKDFEVKSS FGHIRDLPKK GMGIDLKTFS PDYEVSADKK
KLVTELKSAV KKAEMVWLAS DEDREGEAIA WHLADELKLK PENRKRIVFH EITKNAILKA
IENPRDIDQN LVNAQQARRV LDRIVGFEMS PVLWKKVKPG LSAGRVQSVA VRLIVEREKE
IRDFTPKADF KLDGIFLNKS EQEIAARLKK DFDKEEDAEK FLEQARTAEF KVLNVETKPG
TRSASAPFTT STLQQEASSR LGYNVTNTMR LAQRLYEEGY ITYMRTDSVN LSQEAIEGAK
KQITSEYGAE YSAPRNYTTK SASAQEAHEA IRPTDFGVKS IGDAQLNRLY QLIYRRTLAS
QMANAKIEKT VIEIGNSKLP RHFEAQGEVI IFDGFLKAYG IVKTDDDDEE NNEKLLPKVS
IGEVLTYKTI TATEKFTRPS ARYTEAGLVR KLEELGIGRP STYAPTIQTI QNREYVDKRE
VEPQTREVVR ISLAKDKIKK VVLEEKFGGD KNKFLPTDIG EVVNDFLTDN FKEILDYGFT
ARVEEGFDEI ANGDQKWKEM MTDFYSKFHP RIEDVEENAD RATGDRLLGV DPKTGKNVHA
RIGRFGAMIQ IGETEDEEKP VFASLMTGQN IATITFEEAL ELFKLPFDLN EFEGQTVSVG
VGRFGPYVKW GETYISIPKG EDPLSVDQNR AEEIIKEKKL ADAPIATYKG EPVTKGTGRF
GPFIKYQSIF VNVPKKYDFE NLSQSDINEL IDAKLEKEAN RYIQQWEKEK ISIENGRWGP
FIKFGKAMFK IPKKKDETKY EAEELKTVSL DEVKKWITSQ DKNAFAEKKK PVAKKKAAPA
KKK
//
