>gnl|CDD|72883 cd03425, MutT_pyrophosphohydrolase, The MutT pyrophosphohydrolase is a prototypical Nudix hydrolase that catalyzes the hydrolysis of nucleoside and deoxynucleoside triphosphates (NTPs and dNTPs) by substitution at a beta-phosphorus to yield a nucleotide monophosphate (NMP) and inorganic pyrophosphate (PPi). This enzyme requires two divalent cations for activity; one coordinates the phosphoryl groups of the NTP/dNTP substrate, and the other coordinates to the enzyme. It also contains the Nudix motif, a highly conserved 23-residue block (GX5EX7REUXEEXGU, where U = I, L or V), that functions as metal binding and catalytic site. MutT pyrophosphohydrolase is important in preventing errors in DNA replication by hydrolyzing mutagenic nucleotides such as 8-oxo-dGTP (a product of oxidative damage), which can mispair with template adenine during DNA replication, to guanine nucleotides.. Length = 124

 Score =  143 bits (363), Expect = 1e-35
 Identities = 49/126 (38%), Positives = 74/126 (58%), Gaps = 2/126 (1%)

Query: 10  LLVVACAVFEPGGKVLLSCRPKDKSHGEFWEFPGGKIEDGETPEEALTRELFEELAIVVK 69
           + VVA  + +  G++L++ RP  K  G  WEFPGGK+E GETPE+AL REL EEL I V+
Sbjct: 1   IEVVAAIIIDDDGRILIAQRPAGKHLGGLWEFPGGKVEPGETPEQALVRELREELGIEVE 60

Query: 70  PFSLVPLTFISHPYEKFHLLMPFFVCHCFEGIPQSCEGQQLQWVALDDLQNYSMLPADLS 129
                 L  + H Y    + +  F+   + G PQ  E Q+L+WV  ++L +    PAD+ 
Sbjct: 61  VGE--LLATVEHDYPDKRVTLHVFLVELWSGEPQLLEHQELRWVPPEELDDLDFPPADVP 118

Query: 130 LISFLR 135
           +++ L+
Sbjct: 119 IVAALQ 124