>cd04693 Nudix_Hydrolase_34 Members of the Nudix hydrolase superfamily catalyze the hydrolysis of NUcleoside DIphosphates linked to other moieties, X. Enzymes belonging to this superfamily require a divalent cation, such as Mg2+ or Mn2+, for their activity and contain a highly conserved 23-residue nudix motif (GX5EX7REUXEEXGU, where U = I, L or V), which functions as a metal binding and catalytic site. Substrates of nudix hydrolases 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

Probab=99.83 E-value=4.3e-20 Score=136.23 Aligned_cols=108 Identities=29% Similarity=0.442 Sum_probs=83.3 Q ss_pred EEEEEEEECCCEEEEEEECCCC-CCCCCEECC-CCCCCCCCCHHHHHHHHHHHHHCCCCCCCCEEEEEEEECCCCCCEEE Q ss_conf 9999999359869999917898-889838225-73101787488999988887626520244202556652057886069 Q gi|254780325|r 12 VVACAVFEPGGKVLLSCRPKDK-SHGEFWEFP-GGKIEDGETPEEALTRELFEELAIVVKPFSLVPLTFISHPYEKFHLL 89 (141) Q Consensus 12 vv~~~ii~~~~~iLl~~R~~~~-~~~g~W~lP-GG~ve~gEs~~~a~~REv~EEtgi~~~~~~~~~~~~~~~~~~~~~~~ 89 (141) T Consensus 2 vv~v~v~n~~g~iLlqkRs~~K~~~Pg~W~~~~gg~v~~gE~~-eaa~RE~~EElGi~l~~~~~~~~~~~~~~~~~~~~~ 80 (127) T cd04693 2 VVHVCIFNSKGELLLQKRSPNKDGWPGMWDLSVGGHVQAGETS-TAAEREVKEELGLELDFSELRPLFRYFFEAEGFDDY 80 (127) T ss_pred EEEEEEECCCCCEEEEECCCCCCCCCCCEECCCCCCCCCCCCH-HHHHHHHHHHHCCCCCCCCCEEEEEEECCCCCEEEE T ss_conf 8999999399989999668998899972767887551289859-999999999717701766647889999269925899 Q ss_pred EEEEEEEEECCEE--CCCHHHEEEECCHHHHCCC Q ss_conf 9999999754837--6882331570277883248 Q gi|254780325|r 90 MPFFVCHCFEGIP--QSCEGQQLQWVALDDLQNY 121 (141) Q Consensus 90 ~~~~~~~~~~~~~--~~~E~~~~~Wi~~~el~~~ 121 (141) T Consensus 81 ~-~~~~~~~~~~~~~~~~EV~d~~Wvs~eEl~~~ 113 (127) T cd04693 81 Y-LFYADVEIGKLILQKEEVDEVKFVSKDEIDGL 113 (127) T ss_pred E-EEEEEEECCCCCCCHHHEEEEEEECHHHHHHH T ss_conf 9-99970378987289378246899679999999

HHsearch alignment for GI: 254780325 and conserved domain: cd04693