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Database: UniProt
Entry: R5UMN2_9BACE
LinkDB: R5UMN2_9BACE
Original site: R5UMN2_9BACE 
ID   R5UMN2_9BACE            Unreviewed;       193 AA.
AC   R5UMN2;
DT   24-JUL-2013, integrated into UniProtKB/TrEMBL.
DT   24-JUL-2013, sequence version 1.
DT   24-JAN-2024, entry version 41.
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=BN535_02132 {ECO:0000313|EMBL:CCZ72416.1};
OS   Bacteroides caccae CAG:21.
OC   Bacteria; Bacteroidota; Bacteroidia; Bacteroidales; Bacteroidaceae;
OC   Bacteroides.
OX   NCBI_TaxID=1263037 {ECO:0000313|EMBL:CCZ72416.1, ECO:0000313|Proteomes:UP000017990};
RN   [1] {ECO:0000313|EMBL:CCZ72416.1, ECO:0000313|Proteomes:UP000017990}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MGS:21 {ECO:0000313|Proteomes:UP000017990};
RA   Nielsen H.B., Almeida M., Juncker A.S., Rasmussen S., Li J., Sunagawa S.,
RA   Plichta D., Gautier L., Le Chatelier E., Peletier E., Bonde I., Nielsen T.,
RA   Manichanh C., Arumugam M., Batto J., Santos M.B.Q.D., Blom N., Borruel N.,
RA   Burgdorf K.S., Boumezbeur F., Casellas F., Dore J., Guarner F., Hansen T.,
RA   Hildebrand F., Kaas R.S., Kennedy S., Kristiansen K., Kultima J.R.,
RA   Leonard P., Levenez F., Lund O., Moumen B., Le Paslier D., Pons N.,
RA   Pedersen O., Prifti E., Qin J., Raes J., Tap J., Tims S., Ussery D.W.,
RA   Yamada T., MetaHit consortium, Renault P., Sicheritz-Ponten T., Bork P.,
RA   Wang J., Brunak S., Ehrlich S.D.;
RT   "Dependencies among metagenomic species, viruses, plasmids and units of
RT   genetic variation.";
RL   Submitted (NOV-2012) to the EMBL/GenBank/DDBJ databases.
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: Lacks conserved residue(s) required for the propagation of
CC       feature annotation. {ECO:0000256|HAMAP-Rule:MF_01405}.
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:CCZ72416.1}.
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DR   EMBL; CBAN010000044; CCZ72416.1; -; Genomic_DNA.
DR   AlphaFoldDB; R5UMN2; -.
DR   Proteomes; UP000017990; Unassembled WGS sequence.
DR   GO; GO:0035870; F:dITP diphosphatase activity; IEA:UniProtKB-EC.
DR   GO; GO:0036220; F:ITP diphosphatase activity; IEA:UniProtKB-EC.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0000166; F:nucleotide binding; IEA:UniProtKB-KW.
DR   GO; GO:0017111; F:ribonucleoside triphosphate phosphatase activity; IEA:InterPro.
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; IPR029001; ITPase-like_fam.
DR   InterPro; IPR002637; RdgB/HAM1.
DR   NCBIfam; TIGR00042; RdgB/HAM1 family non-canonical purine NTP pyrophosphatase; 1.
DR   PANTHER; PTHR11067:SF9; INOSINE TRIPHOSPHATE PYROPHOSPHATASE; 1.
DR   PANTHER; PTHR11067; INOSINE TRIPHOSPHATE PYROPHOSPHATASE/HAM1 PROTEIN; 1.
DR   Pfam; PF01725; Ham1p_like; 1.
DR   SUPFAM; SSF52972; ITPase-like; 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}; Nucleotide metabolism {ECO:0000256|HAMAP-Rule:MF_01405};
KW   Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW   Rule:MF_01405}.
FT   ACT_SITE        70
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01405"
FT   BINDING         9..14
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01405"
FT   BINDING         70
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01405"
FT   BINDING         71
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01405"
FT   BINDING         151..154
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01405"
FT   BINDING         174
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01405"
FT   BINDING         179..180
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01405"
SQ   SEQUENCE   193 AA;  21340 MW;  2D4AAEC12F9613F0 CRC64;
     MKRKLVFATN NAHKLEEVAA ILGDQIELLS LNDIGCHTDI PETAETLEGN ALLKSSFIFK
     NYGLDCFADD TGLEVEALDG APGVYSARYA GGEGHDAQAN MLKLLHELEG KENRKAQFRT
     AISLILDGKE YLFEGVIKGE IIREKRGDSG FGYDPVFKPE GYERTFAELG NDIKNKISHR
     ALAVQKLCEF LQS
//
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