>cd04663 Nudix_Hydrolase_6 Members of the Nudix hydrolase superfamily catalyze the hydrolysis of NUcleoside DIphosphates linked to other moieties, X. Enzymes belong to this superfamily requires a divalent cation, such as Mg2+ or Mn2+ for their activity and contain a highly conserved 23-residue nudix motif (GX5EX7REUXEEXGU, U=I, L or V) which functions as metal binding and catalytic site. Substrates of nudix hydrolase include intact and oxidatively damaged nucleoside triphosphates, dinucleoside polyphosphates, nucleotide-sugars and dinucleotide enzymes. These substrates are metabolites or cell signaling molecules that require regulation during different stages of the cell cycle or during periods of stress. In general, the role of the nudix hydrolase is to sanitize the nucleotide pools and to maintain cell viability, thereby serving as surveillance & "house-cleaning" enzymes. Substrate specificity is used to define families within the superfamily. Differences in substrate specificity are

Probab=99.38  E-value=6.8e-13  Score=95.48  Aligned_cols=50  Identities=32%  Similarity=0.417  Sum_probs=39.6

Q ss_pred             EEEEECCC--CCEEEEEECCCCCCCCCCCCCCCCCCCCCCCCHHHHHHHHHHHHHCCCC
Q ss_conf             99998489--8399999268877666872201211507888888999999999837552
Q gi|254780557|r    7 GILILNQD--DLVWVGRRCFHDNNKHLSLWQMPQGGINPQEDPLDAAYRELYEETGIKS   63 (160)
Q Consensus         7 ~vvi~n~~--~~iLl~kR~~~~~~~~~g~W~~PgG~ve~gEt~~~Aa~REl~EEtGi~~   63 (160)
T Consensus         4 pvv~r~~~~~~elL~f~h---p----~~g~q~p~G~ve~gE~~~~aa~RE~~EEtGl~~   55 (126)
T cd04663           4 PAVLRRNGEVLELLVFEH---P----LAGFQIVKGTVEPGETPEAAALRELQEESGLPS   55 (126)
T ss_pred             CEEEECCCCEEEEEEEEC---C----CCCEECCCCCCCCCCCHHHHHHHHHHHHHCCCC
T ss_conf             689961697068999817---8----885476576758998989999999888768764