IXTPA_LEPIC
ID IXTPA_LEPIC Reviewed; 197 AA.
AC Q72UV8;
DT 26-APR-2005, integrated into UniProtKB/Swiss-Prot.
DT 05-JUL-2004, sequence version 1.
DT 03-AUG-2022, entry version 93.
DE RecName: Full=dITP/XTP pyrophosphatase {ECO:0000255|HAMAP-Rule:MF_01405};
DE EC=3.6.1.66 {ECO:0000255|HAMAP-Rule:MF_01405};
DE AltName: Full=Non-canonical purine NTP pyrophosphatase {ECO:0000255|HAMAP-Rule:MF_01405};
DE AltName: Full=Non-standard purine NTP pyrophosphatase {ECO:0000255|HAMAP-Rule:MF_01405};
DE AltName: Full=Nucleoside-triphosphate diphosphatase {ECO:0000255|HAMAP-Rule:MF_01405};
DE AltName: Full=Nucleoside-triphosphate pyrophosphatase {ECO:0000255|HAMAP-Rule:MF_01405};
DE Short=NTPase {ECO:0000255|HAMAP-Rule:MF_01405};
GN OrderedLocusNames=LIC_10549;
OS Leptospira interrogans serogroup Icterohaemorrhagiae serovar copenhageni
OS (strain Fiocruz L1-130).
OC Bacteria; Spirochaetes; Leptospirales; Leptospiraceae; Leptospira.
OX NCBI_TaxID=267671;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Fiocruz L1-130;
RX PubMed=15028702; DOI=10.1128/jb.186.7.2164-2172.2004;
RA Nascimento A.L.T.O., Ko A.I., Martins E.A.L., Monteiro-Vitorello C.B.,
RA Ho P.L., Haake D.A., Verjovski-Almeida S., Hartskeerl R.A., Marques M.V.,
RA Oliveira M.C., Menck C.F.M., Leite L.C.C., Carrer H., Coutinho L.L.,
RA Degrave W.M., Dellagostin O.A., El-Dorry H., Ferro E.S., Ferro M.I.T.,
RA Furlan L.R., Gamberini M., Giglioti E.A., Goes-Neto A., Goldman G.H.,
RA Goldman M.H.S., Harakava R., Jeronimo S.M.B., Junqueira-de-Azevedo I.L.M.,
RA Kimura E.T., Kuramae E.E., Lemos E.G.M., Lemos M.V.F., Marino C.L.,
RA Nunes L.R., de Oliveira R.C., Pereira G.G., Reis M.S., Schriefer A.,
RA Siqueira W.J., Sommer P., Tsai S.M., Simpson A.J.G., Ferro J.A.,
RA Camargo L.E.A., Kitajima J.P., Setubal J.C., Van Sluys M.A.;
RT "Comparative genomics of two Leptospira interrogans serovars reveals novel
RT insights into physiology and pathogenesis.";
RL J. Bacteriol. 186:2164-2172(2004).
CC -!- FUNCTION: Pyrophosphatase that catalyzes the hydrolysis of nucleoside
CC triphosphates to their monophosphate derivatives, with a high
CC preference for the non-canonical purine nucleotides XTP (xanthosine
CC triphosphate), dITP (deoxyinosine triphosphate) and ITP. Seems to
CC function as a house-cleaning enzyme that removes non-canonical purine
CC nucleotides from the nucleotide pool, thus preventing their
CC incorporation into DNA/RNA and avoiding chromosomal lesions.
CC {ECO:0000255|HAMAP-Rule:MF_01405}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + XTP = diphosphate + H(+) + XMP; Xref=Rhea:RHEA:28610,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:33019,
CC ChEBI:CHEBI:57464, ChEBI:CHEBI:61314; EC=3.6.1.66;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01405};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=dITP + H2O = dIMP + diphosphate + H(+); Xref=Rhea:RHEA:28342,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:33019,
CC ChEBI:CHEBI:61194, ChEBI:CHEBI:61382; EC=3.6.1.66;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01405};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + ITP = diphosphate + H(+) + IMP; Xref=Rhea:RHEA:29399,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:33019,
CC ChEBI:CHEBI:58053, ChEBI:CHEBI:61402; EC=3.6.1.66;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01405};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01405};
CC Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000255|HAMAP-Rule:MF_01405};
CC -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01405}.
CC -!- SIMILARITY: Belongs to the HAM1 NTPase family. {ECO:0000255|HAMAP-
CC Rule:MF_01405}.
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DR EMBL; AE016823; AAS69170.1; -; Genomic_DNA.
DR RefSeq; WP_000828653.1; NC_005823.1.
DR AlphaFoldDB; Q72UV8; -.
DR SMR; Q72UV8; -.
DR PaxDb; Q72UV8; -.
DR EnsemblBacteria; AAS69170; AAS69170; LIC_10549.
DR GeneID; 61143902; -.
DR KEGG; lic:LIC_10549; -.
DR HOGENOM; CLU_082080_0_2_12; -.
DR OMA; DCFADDT; -.
DR Proteomes; UP000007037; Chromosome I.
DR GO; GO:0035870; F:dITP diphosphatase activity; IEA:UniProtKB-EC.
DR GO; GO:0036220; F:ITP diphosphatase activity; IEA:RHEA.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0017111; F:nucleoside-triphosphatase activity; IEA:InterPro.
DR GO; GO:0000166; F:nucleotide binding; IEA:UniProtKB-KW.
DR GO; GO:0036222; F:XTP diphosphatase activity; IEA:UniProtKB-EC.
DR GO; GO:0009117; P:nucleotide metabolic process; IEA:UniProtKB-KW.
DR GO; GO:0009146; P:purine nucleoside triphosphate catabolic process; IEA:UniProtKB-UniRule.
DR CDD; cd00515; HAM1; 1.
DR Gene3D; 3.90.950.10; -; 1.
DR HAMAP; MF_01405; Non_canon_purine_NTPase; 1.
DR InterPro; IPR020922; dITP/XTP_pyrophosphatase.
DR InterPro; IPR002637; Ham1p-like.
DR InterPro; IPR029001; ITPase-like_fam.
DR PANTHER; PTHR11067; PTHR11067; 1.
DR Pfam; PF01725; Ham1p_like; 1.
DR SUPFAM; SSF52972; SSF52972; 1.
DR TIGRFAMs; TIGR00042; TIGR00042; 1.
PE 3: Inferred from homology;
KW Hydrolase; Magnesium; Metal-binding; Nucleotide metabolism;
KW Nucleotide-binding.
FT CHAIN 1..197
FT /note="dITP/XTP pyrophosphatase"
FT /id="PRO_0000178185"
FT ACT_SITE 71
FT /note="Proton acceptor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01405"
FT BINDING 9..14
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01405"
FT BINDING 42
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01405"
FT BINDING 71
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01405"
FT BINDING 72
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01405"
FT BINDING 153..156
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01405"
FT BINDING 176
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01405"
FT BINDING 181..182
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01405"
SQ SEQUENCE 197 AA; 22105 MW; B9A1A8B50F5063F4 CRC64;
MKRQLALGTN NLNKVKEVSS ILMELGIQIL TPKDLKVSFN PEETGSTFKE NALIKAKELF
YLTKIPSIAD DSGICVSALK DEPGVYSARF GGPELNDEGR ALLLLEKLKG NQNRKAYYAC
AIAYVDESTE QSFEGRCEGL ISEEYDRIGI YGFGYDPIFI FPPLQKPFSQ IQEETKNSVS
HRKKALDELL KFLKTKP
