ID K0JSL6_SACES Unreviewed; 202 AA.
AC K0JSL6;
DT 28-NOV-2012, integrated into UniProtKB/TrEMBL.
DT 28-NOV-2012, sequence version 1.
DT 27-MAR-2024, entry version 57.
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 OrderedLocusNames=BN6_11810 {ECO:0000313|EMBL:CCH28507.1};
OS Saccharothrix espanaensis (strain ATCC 51144 / DSM 44229 / JCM 9112 / NBRC
OS 15066 / NRRL 15764).
OC Bacteria; Actinomycetota; Actinomycetes; Pseudonocardiales;
OC Pseudonocardiaceae; Saccharothrix.
OX NCBI_TaxID=1179773 {ECO:0000313|EMBL:CCH28507.1, ECO:0000313|Proteomes:UP000006281};
RN [1] {ECO:0000313|EMBL:CCH28507.1, ECO:0000313|Proteomes:UP000006281}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 51144 / DSM 44229 / JCM 9112 / NBRC 15066 / NRRL 15764
RC {ECO:0000313|Proteomes:UP000006281};
RX PubMed=22958348; DOI=10.1186/1471-2164-13-465;
RA Strobel T., Al-Dilaimi A., Blom J., Gessner A., Kalinowski J.,
RA Luzhetska M., Puhler A., Szczepanowski R., Bechthold A., Ruckert C.;
RT "Complete genome sequence of Saccharothrix espanaensis DSM 44229T and
RT comparison to the other completely sequenced Pseudonocardiaceae.";
RL BMC Genomics 13:465-465(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: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {ECO:0000256|HAMAP-Rule:MF_01405}.
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DR EMBL; HE804045; CCH28507.1; -; Genomic_DNA.
DR RefSeq; WP_015098620.1; NC_019673.1.
DR AlphaFoldDB; K0JSL6; -.
DR STRING; 1179773.BN6_11810; -.
DR KEGG; sesp:BN6_11810; -.
DR PATRIC; fig|1179773.3.peg.1187; -.
DR eggNOG; COG0127; Bacteria.
DR HOGENOM; CLU_082080_0_1_11; -.
DR OrthoDB; 9807456at2; -.
DR BioCyc; SESP1179773:BN6_RS05805-MONOMER; -.
DR Proteomes; UP000006281; Chromosome.
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}; Reference proteome {ECO:0000313|Proteomes:UP000006281}.
FT ACT_SITE 72
FT /note="Proton acceptor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01405"
FT BINDING 7..12
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01405"
FT BINDING 72
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01405"
FT BINDING 73
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01405"
FT BINDING 155..158
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"
FT BINDING 183..184
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01405"
SQ SEQUENCE 202 AA; 21408 MW; 536F2E988030C484 CRC64;
MKVLLASRNA KKLGELRRIL VAEGLSGIEV VGLADVPEFP EAPETDPTFE GNALAKARDA
FAATGLPAVA DDSGIEVDAL NGMPGVLSAR WSGAHGNDAA NLQLVLGQLR DVPDERRGGA
FVCTAALVAA DGVEVVVRGE WRGTIRREPA GTNGFGYDPI FQPEGQDVTS AELSPEDKDK
LSHRGRALRL LLPHLRELAQ GR
//
