ID A0A1A9RVM6_9NEIS Unreviewed; 766 AA.
AC A0A1A9RVM6;
DT 05-OCT-2016, integrated into UniProtKB/TrEMBL.
DT 05-OCT-2016, sequence version 1.
DT 27-MAR-2024, entry version 33.
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=A7P95_10805 {ECO:0000313|EMBL:OAM26176.1};
OS Eikenella longinqua.
OC Bacteria; Pseudomonadota; Betaproteobacteria; Neisseriales; Neisseriaceae;
OC Eikenella.
OX NCBI_TaxID=1795827 {ECO:0000313|EMBL:OAM26176.1, ECO:0000313|Proteomes:UP000077885};
RN [1] {ECO:0000313|Proteomes:UP000077885}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=NML02-A-017 {ECO:0000313|Proteomes:UP000077885};
RA Bernier A.-M., Bernard K.;
RT "Draft genome of Corynebacterium afermentans subsp. afermentans LCDC
RT 88199T.";
RL Submitted (MAY-2016) to the EMBL/GenBank/DDBJ databases.
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:OAM26176.1}.
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DR EMBL; LXSL01000032; OAM26176.1; -; Genomic_DNA.
DR RefSeq; WP_067595233.1; NZ_LXSL01000032.1.
DR AlphaFoldDB; A0A1A9RVM6; -.
DR STRING; 1795827.A7P95_10805; -.
DR OrthoDB; 9803554at2; -.
DR Proteomes; UP000077885; Unassembled WGS sequence.
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; 3.
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; 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; 2.
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}; Zinc {ECO:0000256|ARBA:ARBA00022833};
KW Zinc-finger {ECO:0000256|ARBA:ARBA00022771}.
FT DOMAIN 3..119
FT /note="Toprim"
FT /evidence="ECO:0000259|PROSITE:PS50880"
FT REGION 169..174
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT ACT_SITE 306
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 145
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 146
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 161
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 308
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
FT SITE 500
FT /note="Interaction with DNA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00952"
SQ SEQUENCE 766 AA; 86817 MW; 57A1F3C58B44FF7E CRC64;
MSKNLLIVES PNKIKSIKKY LGSDFEVLAS FGHVRDLVPK NGAVDPEHDF AMKYEVPAKS
KKHIDAIVAA AKEADTLYLA TDPDREGEAI SWHIYEILKS KRGIKNLEER TQRVVFHEVT
KKGVQEALKQ PRKLDMDLVD AQQARRALDY LVGFNLSPLL WKKIRRGLSA GRVQSPALRL
ICERENEIRA FETQEYWSVH LDSHKGRQKF GAKLTHWQGN KLEQFSLGNE AAQAEVLAAM
QGKPAQVLEV AKKKATRKPA APYTTSTMQQ DAVRKLGFTT DRTMRTAQQL FEGVDVGQGS
VGLITYMRTD SVTLSQDALA EIRHYIDNKI GADFLPKSPR MYRTKSKNAQ EAHEAIRPTS
VYRTPESVKP FLSADQFKLY QMIWQRTMAC QMAEAKFDAT TVDIGVGEGV FRATGQVLVF
AGFLSVYQEG HDEDDEDEDN KKLPELESGE TLPVDKLYGE QHFTQPPPRF NEATLVKALE
EFGIGRPSTY ASIIKTLKDR EYVTVDQRRF LPTDTGEIVN KFLTEHFTQY VDYDFTAKLE
DQLDDIASGK RQWIPVMDKF WKGFHKQIEE KAGIERAKIT TEELDETCPK CGQHKLQIKF
GKRGRFIACS GYPDCDYTRN INETAEEAAK AAEEPTVVEG RECPKCGGQL VYKKGRFGKF
IGCANYPKCK HIEPLEKPKD TGVGCPKCGK GHLIERKSRY GKLFYSCNTY PDCDYATWNP
PIAEECPKCH WPVLTIKTTK RWGVEKVCPQ KECGWKEQIE PPAPKG
//
