ID   A0A2X1D935_BREVE        Unreviewed;       200 AA.
AC   A0A2X1D935;
DT   12-SEP-2018, integrated into UniProtKB/TrEMBL.
DT   12-SEP-2018, sequence version 1.
DT   16-JAN-2019, entry version 5.
DE   RecName: Full=dITP/XTP pyrophosphatase {ECO:0000256|HAMAP-Rule:MF_01405};
DE            EC=3.6.1.66 {ECO:0000256|HAMAP-Rule:MF_01405};
DE   AltName: Full=Non-canonical purine NTP pyrophosphatase {ECO:0000256|HAMAP-Rule:MF_01405};
DE   AltName: Full=Non-standard purine NTP pyrophosphatase {ECO:0000256|HAMAP-Rule:MF_01405};
DE   AltName: Full=Nucleoside-triphosphate diphosphatase {ECO:0000256|HAMAP-Rule:MF_01405};
DE   AltName: Full=Nucleoside-triphosphate pyrophosphatase {ECO:0000256|HAMAP-Rule:MF_01405};
DE            Short=NTPase {ECO:0000256|HAMAP-Rule:MF_01405};
GN   ORFNames=NCTC11166_02762 {ECO:0000313|EMBL:SPU55366.1};
OS   Brevundimonas vesicularis (Pseudomonas vesicularis).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Caulobacterales;
OC   Caulobacteraceae; Brevundimonas.
OX   NCBI_TaxID=41276 {ECO:0000313|EMBL:SPU55366.1, ECO:0000313|Proteomes:UP000251186};
RN   [1] {ECO:0000313|EMBL:SPU55366.1, ECO:0000313|Proteomes:UP000251186}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=NCTC11166 {ECO:0000313|EMBL:SPU55366.1,
RC   ECO:0000313|Proteomes:UP000251186};
RG   Pathogen Informatics;
RA   Doyle S.;
RL   Submitted (JUN-2018) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Pyrophosphatase that catalyzes the hydrolysis of
CC       nucleoside triphosphates to their monophosphate derivatives, with
CC       a high preference for the non-canonical purine nucleotides XTP
CC       (xanthosine triphosphate), dITP (deoxyinosine triphosphate) and
CC       ITP. Seems to function as a house-cleaning enzyme that removes
CC       non-canonical purine nucleotides from the nucleotide pool, thus
CC       preventing their incorporation into DNA/RNA and avoiding
CC       chromosomal lesions. {ECO:0000256|HAMAP-Rule:MF_01405,
CC       ECO:0000256|SAAS:SAAS00805977}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=H2O + ITP = diphosphate + H(+) + IMP;
CC         Xref=Rhea:RHEA:29399, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:33019, ChEBI:CHEBI:58053, ChEBI:CHEBI:61402;
CC         EC=3.6.1.66; Evidence={ECO:0000256|HAMAP-Rule:MF_01405,
CC         ECO:0000256|SAAS:SAAS01118622};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=H2O + XTP = diphosphate + H(+) + XMP;
CC         Xref=Rhea:RHEA:28610, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:33019, ChEBI:CHEBI:57464, ChEBI:CHEBI:61314;
CC         EC=3.6.1.66; Evidence={ECO:0000256|HAMAP-Rule:MF_01405,
CC         ECO:0000256|SAAS:SAAS01118649};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=dITP + H2O = dIMP + diphosphate + H(+);
CC         Xref=Rhea:RHEA:28342, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:33019, ChEBI:CHEBI:61194, ChEBI:CHEBI:61382;
CC         EC=3.6.1.66; Evidence={ECO:0000256|HAMAP-Rule:MF_01405,
CC         ECO:0000256|SAAS:SAAS01118637};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420; Evidence={ECO:0000256|HAMAP-
CC         Rule:MF_01405};
CC       Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000256|HAMAP-
CC       Rule:MF_01405};
CC   -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_01405,
CC       ECO:0000256|SAAS:SAAS00730484}.
CC   -!- SIMILARITY: Belongs to the HAM1 NTPase family. {ECO:0000256|HAMAP-
CC       Rule:MF_01405, ECO:0000256|RuleBase:RU003781,
CC       ECO:0000256|SAAS:SAAS00730348}.
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DR   EMBL; UAQP01000014; SPU55366.1; -; Genomic_DNA.
DR   Proteomes; UP000251186; Unassembled WGS sequence.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0017111; F:nucleoside-triphosphatase activity; IEA:InterPro.
DR   GO; GO:0047429; F:nucleoside-triphosphate diphosphatase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0000166; F:nucleotide binding; IEA:UniProtKB-KW.
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   Complete proteome {ECO:0000313|Proteomes:UP000251186};
KW   Hydrolase {ECO:0000256|HAMAP-Rule:MF_01405,
KW   ECO:0000256|RuleBase:RU003781, ECO:0000256|SAAS:SAAS00730407,
KW   ECO:0000313|EMBL:SPU55366.1};
KW   Magnesium {ECO:0000256|HAMAP-Rule:MF_01405,
KW   ECO:0000256|SAAS:SAAS00730390};
KW   Metal-binding {ECO:0000256|HAMAP-Rule:MF_01405,
KW   ECO:0000256|SAAS:SAAS00730432};
KW   Nucleotide metabolism {ECO:0000256|HAMAP-Rule:MF_01405,
KW   ECO:0000256|SAAS:SAAS00730340};
KW   Nucleotide-binding {ECO:0000256|HAMAP-Rule:MF_01405,
KW   ECO:0000256|SAAS:SAAS00730332}.
FT   REGION       15     20       Substrate binding. {ECO:0000256|HAMAP-
FT                                Rule:MF_01405}.
FT   REGION      158    161       Substrate binding. {ECO:0000256|HAMAP-
FT                                Rule:MF_01405}.
FT   REGION      186    187       Substrate binding. {ECO:0000256|HAMAP-
FT                                Rule:MF_01405}.
FT   ACT_SITE     75     75       Proton acceptor. {ECO:0000256|HAMAP-Rule:
FT                                MF_01405}.
FT   METAL        46     46       Magnesium. {ECO:0000256|HAMAP-Rule:
FT                                MF_01405}.
FT   METAL        75     75       Magnesium. {ECO:0000256|HAMAP-Rule:
FT                                MF_01405}.
FT   BINDING      76     76       Substrate; via amide nitrogen.
FT                                {ECO:0000256|HAMAP-Rule:MF_01405}.
FT   BINDING     181    181       Substrate. {ECO:0000256|HAMAP-Rule:
FT                                MF_01405}.
SQ   SEQUENCE   200 AA;  21076 MW;  66E79C5A516176F7 CRC64;
     MNLKLIKGMR IVVATHNGGK VPEISALLGG NYELVTAGQL NLPEPDETES TFTGNAMLKA
     RHAAELSGEV SLADDSGLSV AALDGAPGIF SARWAGPGKD FAVAMKKVEE RLEEIGATDR
     TAWFTSALAV AWPDGPCVVV QGEVHGQLTF PPRGDRGFGY DPLFIPNGGD RTFGEMEPAA
     KDAISHRTVA FAKLTAALID
//