ID J3FAM8_9PSED Unreviewed; 198 AA. AC J3FAM8; DT 03-OCT-2012, integrated into UniProtKB/TrEMBL. DT 03-OCT-2012, sequence version 1. DT 03-AUG-2022, entry version 45. 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=PMI24_02017 {ECO:0000313|EMBL:EJM28855.1}; OS Pseudomonas sp. GM25. OC Bacteria; Proteobacteria; Gammaproteobacteria; Pseudomonadales; OC Pseudomonadaceae; Pseudomonas. OX NCBI_TaxID=1144327 {ECO:0000313|EMBL:EJM28855.1, ECO:0000313|Proteomes:UP000007510}; RN [1] {ECO:0000313|EMBL:EJM28855.1, ECO:0000313|Proteomes:UP000007510} RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=GM25 {ECO:0000313|EMBL:EJM28855.1, RC ECO:0000313|Proteomes:UP000007510}; 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: 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:0000256|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:0000256|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:0000256|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:0000256|HAMAP-Rule:MF_01405}; CC -!- COFACTOR: CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420; CC Evidence={ECO:0000256|HAMAP-Rule:MF_01405}; CC Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000256|HAMAP-Rule:MF_01405}; CC -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_01405}. CC -!- SIMILARITY: Belongs to the HAM1 NTPase family. CC {ECO:0000256|ARBA:ARBA00008023, ECO:0000256|HAMAP-Rule:MF_01405, CC ECO:0000256|RuleBase:RU003781}. 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:EJM28855.1}. CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; AKJQ01000033; EJM28855.1; -; Genomic_DNA. DR RefSeq; WP_007953366.1; NZ_AKJQ01000033.1. DR EnsemblBacteria; EJM28855; EJM28855; PMI24_02017. DR PATRIC; fig|1144327.3.peg.1945; -. DR Proteomes; UP000007510; Unassembled WGS sequence. 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 {ECO:0000256|ARBA:ARBA00022801, ECO:0000256|HAMAP-Rule:MF_01405}; KW Magnesium {ECO:0000256|ARBA:ARBA00022842, ECO:0000256|HAMAP-Rule:MF_01405}; KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP- KW Rule:MF_01405}; KW Nucleotide metabolism {ECO:0000256|ARBA:ARBA00023080, ECO:0000256|HAMAP- KW Rule:MF_01405}; KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP- KW Rule:MF_01405}. FT REGION 11..16 FT /note="Substrate binding" FT /evidence="ECO:0000256|HAMAP-Rule:MF_01405" FT REGION 155..158 FT /note="Substrate binding" FT /evidence="ECO:0000256|HAMAP-Rule:MF_01405" FT REGION 183..184 FT /note="Substrate binding" FT /evidence="ECO:0000256|HAMAP-Rule:MF_01405" FT ACT_SITE 71 FT /note="Proton acceptor" FT /evidence="ECO:0000256|HAMAP-Rule:MF_01405" FT BINDING 42 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /evidence="ECO:0000256|HAMAP-Rule:MF_01405" FT BINDING 71 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /evidence="ECO:0000256|HAMAP-Rule:MF_01405" FT BINDING 72 FT /ligand="substrate" FT /evidence="ECO:0000256|HAMAP-Rule:MF_01405" FT BINDING 178 FT /ligand="substrate" FT /evidence="ECO:0000256|HAMAP-Rule:MF_01405" SQ SEQUENCE 198 AA; 21239 MW; 091E6854921CE7A4 CRC64; MINLKQLVLA SHNAGKLKEL QAMLGESVQL RSIGEFSSVE PEETGLSFVE NAILKARNAA RISGLPALAD DSGLAVDFLG GAPGIYSARY ADGKGDAANN AKLLDALKDV PEAERGAQFV CVLALVRHAD DPLPILCEGL WHGRILTAAS GEHGFGYDPL FWVPERNVSS AELSPSDKNQ ISHRARAMDL LRQRLGLK //