CATH Classification

Domain Context

CATH Clusters

Superfamily Nucleoside Triphosphate Pyrophosphohydrolase
Functional Family U8 snoRNA-decapping enzyme

Enzyme Information

3.6.1.62
5'-(N(7)-methylguanosine 5'-triphospho)-[mRNA] hydrolase.
based on mapping to UniProt Q6TEC1
5'-(N(7)-methylguanosine 5'-triphospho)-[mRNA] + H(2)O = N(7)- methylguanosine 5'-diphosphate + 5'-phospho-[mRNA].
-!- Decapping of mRNA is a critical step in eukaryotic mRNA turnover. -!- The enzyme is unable to cleave a free cap structure (m(7)GpppG). -!- The enzyme from Vaccinia virus is synergistically activated in the presence of Mg(2+) and Mn(2+). -!- Formerly EC 3.6.1.30.
3.6.1.64
Inosine diphosphate phosphatase.
based on mapping to UniProt Q6TEC1
(1) IDP + H(2)O = IMP + phosphate. (2) dIDP + H(2)O = dIMP + phosphate.
-!- The human enzyme also hydrolyzes GDP and dGDP, and to a lesser extent ITP, dITP and XTP.

UniProtKB Entries (1)

Q6TEC1
NUD16_XENLA
Xenopus laevis
U8 snoRNA-decapping enzyme

PDB Structure

PDB 2A8Q
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Crystal structures of U8 snoRNA decapping nudix hydrolase, X29, and its metal and cap complexes
Scarsdale, J.N., Peculis, B.A., Wright, H.T.
Structure