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ITPA_CIOIN
ID   ITPA_CIOIN              Reviewed;         192 AA.
AC   F6Y089;
DT   19-OCT-2011, integrated into UniProtKB/Swiss-Prot.
DT   27-JUL-2011, sequence version 1.
DT   03-AUG-2022, entry version 49.
DE   RecName: Full=Inosine triphosphate pyrophosphatase {ECO:0000255|HAMAP-Rule:MF_03148};
DE            Short=ITPase {ECO:0000255|HAMAP-Rule:MF_03148};
DE            Short=Inosine triphosphatase {ECO:0000255|HAMAP-Rule:MF_03148};
DE            EC=3.6.1.9 {ECO:0000255|HAMAP-Rule:MF_03148};
DE   AltName: Full=Non-canonical purine NTP pyrophosphatase {ECO:0000255|HAMAP-Rule:MF_03148};
DE   AltName: Full=Non-standard purine NTP pyrophosphatase {ECO:0000255|HAMAP-Rule:MF_03148};
DE   AltName: Full=Nucleoside-triphosphate diphosphatase {ECO:0000255|HAMAP-Rule:MF_03148};
DE   AltName: Full=Nucleoside-triphosphate pyrophosphatase {ECO:0000255|HAMAP-Rule:MF_03148};
DE            Short=NTPase {ECO:0000255|HAMAP-Rule:MF_03148};
OS   Ciona intestinalis (Transparent sea squirt) (Ascidia intestinalis).
OC   Eukaryota; Metazoa; Chordata; Tunicata; Ascidiacea; Phlebobranchia;
OC   Cionidae; Ciona.
OX   NCBI_TaxID=7719;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=12481130; DOI=10.1126/science.1080049;
RA   Dehal P., Satou Y., Campbell R.K., Chapman J., Degnan B., De Tomaso A.,
RA   Davidson B., Di Gregorio A., Gelpke M., Goodstein D.M., Harafuji N.,
RA   Hastings K.E., Ho I., Hotta K., Huang W., Kawashima T., Lemaire P.,
RA   Martinez D., Meinertzhagen I.A., Necula S., Nonaka M., Putnam N., Rash S.,
RA   Saiga H., Satake M., Terry A., Yamada L., Wang H.G., Awazu S., Azumi K.,
RA   Boore J., Branno M., Chin-Bow S., DeSantis R., Doyle S., Francino P.,
RA   Keys D.N., Haga S., Hayashi H., Hino K., Imai K.S., Inaba K., Kano S.,
RA   Kobayashi K., Kobayashi M., Lee B.I., Makabe K.W., Manohar C., Matassi G.,
RA   Medina M., Mochizuki Y., Mount S., Morishita T., Miura S., Nakayama A.,
RA   Nishizaka S., Nomoto H., Ohta F., Oishi K., Rigoutsos I., Sano M.,
RA   Sasaki A., Sasakura Y., Shoguchi E., Shin-i T., Spagnuolo A., Stainier D.,
RA   Suzuki M.M., Tassy O., Takatori N., Tokuoka M., Yagi K., Yoshizaki F.,
RA   Wada S., Zhang C., Hyatt P.D., Larimer F., Detter C., Doggett N.,
RA   Glavina T., Hawkins T., Richardson P., Lucas S., Kohara Y., Levine M.,
RA   Satoh N., Rokhsar D.S.;
RT   "The draft genome of Ciona intestinalis: insights into chordate and
RT   vertebrate origins.";
RL   Science 298:2157-2167(2002).
CC   -!- FUNCTION: Pyrophosphatase that hydrolyzes non-canonical purine
CC       nucleotides such as inosine triphosphate (ITP), deoxyinosine
CC       triphosphate (dITP) or xanthosine 5'-triphosphate (XTP) to their
CC       respective monophosphate derivatives. The enzyme does not distinguish
CC       between the deoxy- and ribose forms. Probably excludes non-canonical
CC       purines from RNA and DNA precursor pools, thus preventing their
CC       incorporation into RNA and DNA and avoiding chromosomal lesions.
CC       {ECO:0000255|HAMAP-Rule:MF_03148}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a ribonucleoside 5'-triphosphate + H2O = a ribonucleoside 5'-
CC         phosphate + diphosphate + H(+); Xref=Rhea:RHEA:23996,
CC         ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:33019,
CC         ChEBI:CHEBI:58043, ChEBI:CHEBI:61557; EC=3.6.1.9;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03148};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:23997;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03148};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a 2'-deoxyribonucleoside 5'-triphosphate + H2O = a 2'-
CC         deoxyribonucleoside 5'-phosphate + diphosphate + H(+);
CC         Xref=Rhea:RHEA:44644, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:33019, ChEBI:CHEBI:61560, ChEBI:CHEBI:65317; EC=3.6.1.9;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03148};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:44645;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03148};
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=3.6.1.9;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03148};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:29400;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03148};
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=3.6.1.9;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03148};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:28343;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03148};
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=3.6.1.9;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03148};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:28611;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03148};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03148};
CC       Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03148};
CC       Note=Binds 1 divalent metal cation per subunit; can use either Mg(2+)
CC       or Mn(2+). {ECO:0000255|HAMAP-Rule:MF_03148};
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_03148}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_03148}.
CC   -!- SIMILARITY: Belongs to the HAM1 NTPase family. {ECO:0000255|HAMAP-
CC       Rule:MF_03148}.
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DR   RefSeq; XP_002131447.1; XM_002131411.4.
DR   RefSeq; XP_018668785.1; XM_018813240.1.
DR   AlphaFoldDB; F6Y089; -.
DR   SMR; F6Y089; -.
DR   STRING; 7719.XP_002131447.1; -.
DR   Ensembl; ENSCINT00000026075; ENSCINP00000025829; ENSCING00000014230.
DR   GeneID; 100180887; -.
DR   KEGG; cin:100180887; -.
DR   eggNOG; KOG3222; Eukaryota.
DR   GeneTree; ENSGT00390000015399; -.
DR   HOGENOM; CLU_082080_1_1_1; -.
DR   InParanoid; F6Y089; -.
DR   OMA; DCFADDT; -.
DR   OrthoDB; 1298391at2759; -.
DR   TreeFam; TF105614; -.
DR   Proteomes; UP000008144; Unassembled WGS sequence.
DR   GO; GO:0005737; C:cytoplasm; IBA:GO_Central.
DR   GO; GO:0035870; F:dITP diphosphatase activity; IEA:RHEA.
DR   GO; GO:0036218; F:dTTP 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:0035529; F:NADH pyrophosphatase activity; IEA:UniProtKB-EC.
DR   GO; GO:0047429; F:nucleoside-triphosphate diphosphatase activity; IBA:GO_Central.
DR   GO; GO:0000166; F:nucleotide binding; IEA:UniProtKB-KW.
DR   GO; GO:0036222; F:XTP diphosphatase activity; IEA:RHEA.
DR   GO; GO:0009204; P:deoxyribonucleoside triphosphate catabolic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0009143; P:nucleoside triphosphate catabolic process; IBA:GO_Central.
DR   GO; GO:0009117; P:nucleotide metabolic process; IEA:UniProtKB-KW.
DR   CDD; cd00515; HAM1; 1.
DR   Gene3D; 3.90.950.10; -; 1.
DR   HAMAP; MF_03148; HAM1_NTPase; 1.
DR   InterPro; IPR002637; Ham1p-like.
DR   InterPro; IPR027502; ITPase.
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   Cytoplasm; Hydrolase; Magnesium; Manganese; Metal-binding;
KW   Nucleotide metabolism; Nucleotide-binding; Reference proteome.
FT   CHAIN           1..192
FT                   /note="Inosine triphosphate pyrophosphatase"
FT                   /id="PRO_0000413105"
FT   BINDING         11..16
FT                   /ligand="ITP"
FT                   /ligand_id="ChEBI:CHEBI:61402"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03148"
FT   BINDING         41
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03148"
FT   BINDING         53
FT                   /ligand="ITP"
FT                   /ligand_id="ChEBI:CHEBI:61402"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03148"
FT   BINDING         69..70
FT                   /ligand="ITP"
FT                   /ligand_id="ChEBI:CHEBI:61402"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03148"
FT   BINDING         86
FT                   /ligand="ITP"
FT                   /ligand_id="ChEBI:CHEBI:61402"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03148"
FT   BINDING         146..149
FT                   /ligand="ITP"
FT                   /ligand_id="ChEBI:CHEBI:61402"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03148"
FT   BINDING         169
FT                   /ligand="ITP"
FT                   /ligand_id="ChEBI:CHEBI:61402"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03148"
FT   BINDING         174..175
FT                   /ligand="ITP"
FT                   /ligand_id="ChEBI:CHEBI:61402"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03148"
SQ   SEQUENCE   192 AA;  21268 MW;  817F212104612C17 CRC64;
     MASRKTISFV TGNKNKLKEV QQFLHGSSSI NITSVPLDLP EYQGEPDDVS KQKCAEASKQ
     LSGPVLIEDT CLCFNAMGGL PGPYVKWFLE KLGPEGIYKM LDGWEDKSGY ALCTFAYSNG
     LQGDDVLLFR GKCEGTIVPP RGPRTFGWDP CFQPNGFNET YAEMSSELKN SISHRGKALE
     ALSEYFKEKN CD
 
 
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