>cd04695 Nudix_Hydrolase_36 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=99.90 E-value=7.4e-23 Score=152.19 Aligned_cols=125 Identities=24% Similarity=0.273 Sum_probs=89.0 Q ss_pred EEEEEEEECCCEEEEEEECCCCCCCCCEECCCCCCCCCCCHHHHHHHHHHHHHCCCCCCCCEEEEEEEECCCCCCE-EEE Q ss_conf 9999999359869999917898889838225731017874889999888876265202442025566520578860-699 Q gi|254780325|r 12 VVACAVFEPGGKVLLSCRPKDKSHGEFWEFPGGKIEDGETPEEALTRELFEELAIVVKPFSLVPLTFISHPYEKFH-LLM 90 (141) Q Consensus 12 vv~~~ii~~~~~iLl~~R~~~~~~~g~W~lPGG~ve~gEs~~~a~~REv~EEtgi~~~~~~~~~~~~~~~~~~~~~-~~~ 90 (141) T Consensus 4 ~v~~~~~~~~~~~LlLkR~~--~~~g~W~~p~G~iE~gEs~~eaA~REl~EETGl~~~~l~~~~~~~~~y~~~~~~i~~~ 81 (131) T cd04695 4 GVLLRSLDKETKVLLLKRVK--TLGGFWCHVAGGVEAGETAWQAALRELKEETGISLPELYNADYLEQFYEANDNRILMA 81 (131) T ss_pred EEEEEEECCCCEEEEEECCC--CCCCEECCCCCCCCCCCCHHHHHHHHHHHHHCCCCEEEEECCEEEEEEECCCCEEEEE T ss_conf 99999989988899997689--9999586982334699999999999888977877434771242688998489769999 Q ss_pred EEEEEEEECC-EEC-CCHHHEEEECCHHHHCCCCCCCCCHHHHHHHHHHC Q ss_conf 9999997548-376-88233157027788324889736989999998721 Q gi|254780325|r 91 PFFVCHCFEG-IPQ-SCEGQQLQWVALDDLQNYSMLPADLSLISFLRKHA 138 (141) Q Consensus 91 ~~~~~~~~~~-~~~-~~E~~~~~Wi~~~el~~~~~~~~~~~ii~~l~~~~ 138 (141) T Consensus 82 ~~f~~~~~~~~~v~ls~Eh~~y~W~~~eea~~ll~~~~~r~~l~~~~~~~ 131 (131) T cd04695 82 PVFVGFVPPHQEVVLNHEHTEYRWCSFAEALELAPFPGQRALYDHVWRYF 131 (131) T ss_pred EEEEEEECCCCCCCCCCCCCCCEECCHHHHHHHCCCCCHHHHHHHHHHHC T ss_conf 99999938999782562032089718999996769967899999999759

HHsearch alignment for GI: 254780325 and conserved domain: cd04695