ID I3IRB1_9BACT Unreviewed; 210 AA. AC I3IRB1; DT 11-JUL-2012, integrated into UniProtKB/TrEMBL. DT 11-JUL-2012, sequence version 1. DT 27-SEP-2017, entry version 34. 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=KSU1_D0947 {ECO:0000313|EMBL:GAB64256.1}; OS Candidatus Jettenia caeni. OC Bacteria; Planctomycetes; Planctomycetia; Candidatus Brocadiales; OC Candidatus Brocadiaceae; Candidatus Jettenia. OX NCBI_TaxID=247490 {ECO:0000313|EMBL:GAB64256.1, ECO:0000313|Proteomes:UP000002985}; RN [1] {ECO:0000313|EMBL:GAB64256.1, ECO:0000313|Proteomes:UP000002985} RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RX PubMed=22673575; DOI=10.1016/j.febslet.2012.04.041; RA Hira D., Toh H., Migita C.T., Okubo H., Nishiyama T., Hattori M., RA Furukawa K., Fujii T.; RT "Anammox organism KSU-1 expresses a NirK-type copper-containing RT nitrite reductase instead of a NirS-type with cytochrome cd1."; RL FEBS Lett. 586:1658-1663(2012). 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: ITP + H(2)O = IMP + diphosphate. CC {ECO:0000256|HAMAP-Rule:MF_01405, ECO:0000256|SAAS:SAAS00805978}. CC -!- CATALYTIC ACTIVITY: XTP + H(2)O = XMP + diphosphate. CC {ECO:0000256|HAMAP-Rule:MF_01405, ECO:0000256|SAAS:SAAS00805983}. CC -!- CATALYTIC ACTIVITY: dITP + H(2)O = dIMP + diphosphate. CC {ECO:0000256|HAMAP-Rule:MF_01405, ECO:0000256|SAAS:SAAS00805979}. 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}. CC -!- CAUTION: The sequence shown here is derived from an CC EMBL/GenBank/DDBJ whole genome shotgun (WGS) entry which is CC preliminary data. {ECO:0000313|EMBL:GAB64256.1}. 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; BAFH01000004; GAB64256.1; -; Genomic_DNA. DR RefSeq; WP_007223336.1; NZ_BAFH01000004.1. DR EnsemblBacteria; GAB64256; GAB64256; KSU1_D0947. DR OrthoDB; POG091H02BP; -. DR Proteomes; UP000002985; 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:UP000002985}; KW Hydrolase {ECO:0000256|HAMAP-Rule:MF_01405, KW ECO:0000256|RuleBase:RU003781, ECO:0000256|SAAS:SAAS00730407}; 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}; KW Reference proteome {ECO:0000313|Proteomes:UP000002985}. FT REGION 17 22 Substrate binding. {ECO:0000256|HAMAP- FT Rule:MF_01405}. FT REGION 163 166 Substrate binding. {ECO:0000256|HAMAP- FT Rule:MF_01405}. FT REGION 191 192 Substrate binding. {ECO:0000256|HAMAP- FT Rule:MF_01405}. FT ACT_SITE 80 80 Proton acceptor. {ECO:0000256|HAMAP-Rule: FT MF_01405}. FT METAL 51 51 Magnesium. {ECO:0000256|HAMAP-Rule: FT MF_01405}. FT METAL 80 80 Magnesium. {ECO:0000256|HAMAP-Rule: FT MF_01405}. FT BINDING 81 81 Substrate; via amide nitrogen. FT {ECO:0000256|HAMAP-Rule:MF_01405}. FT BINDING 186 186 Substrate. {ECO:0000256|HAMAP-Rule: FT MF_01405}. SQ SEQUENCE 210 AA; 23926 MW; 65C6D849B873BA2C CRC64; MTSITNDIHK KTILIATQNK NKRIEILDIL KNIPGILFRD IEDFPFLPTV EEDKNTFQEN AVKKATILAK ACNTWVMADD SGLQIDALNG RPGVFSCRYA GPNATDEKNR EKVLSELKGV PKERRTARFV CTIALASPHE LFFVVEGRCE GFITEEPKGK RGFGYDPIFY VPQYHQTFGE LHSSIKNMIS HRADALKQFK ERIMPLIRKI //