>cd04667 Nudix_Hydrolase_10 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=4.3e-23 Score=153.53 Aligned_cols=107 Identities=31% Similarity=0.472 Sum_probs=83.6 Q ss_pred EEEEEECCCEEEEEEECCCCCCCCCEECCCCCCCCCCCHHHHHHHHHHHHHCCCCCCCCEEEEEEEECCCCCCEEEEEEE Q ss_conf 99999359869999917898889838225731017874889999888876265202442025566520578860699999 Q gi|254780325|r 14 ACAVFEPGGKVLLSCRPKDKSHGEFWEFPGGKIEDGETPEEALTRELFEELAIVVKPFSLVPLTFISHPYEKFHLLMPFF 93 (141) Q Consensus 14 ~~~ii~~~~~iLl~~R~~~~~~~g~W~lPGG~ve~gEs~~~a~~REv~EEtgi~~~~~~~~~~~~~~~~~~~~~~~~~~~ 93 (141) T Consensus 3 A~vi~~~~g~vLLvrr~-----~g~W~lPGG~ve~GEt~~~Aa~RE~~EEtGl~~~~~~~~--~~~~--~~~--~~~~~f 71 (112) T cd04667 3 ATVICRRGGRVLLVRKS-----GSRWALPGGKIEPGETPLQAARRELQEETGLQGLDLLYL--FHVD--GGS--TRHHVF 71 (112) T ss_pred EEEEEECCCEEEEEEEC-----CCCEECCCCCCCCCCCHHHHHHHHHHHHHCCEEEEEEEE--EEEE--CCC--EEEEEE T ss_conf 89999709999999918-----993889874888998999999999999869376546999--9990--898--899999 Q ss_pred EEEEECC-EECC-CHHHEEEECCHHHHCCCCCCCCCHHHH Q ss_conf 9997548-3768-823315702778832488973698999 Q gi|254780325|r 94 VCHCFEG-IPQS-CEGQQLQWVALDDLQNYSMLPADLSLI 131 (141) Q Consensus 94 ~~~~~~~-~~~~-~E~~~~~Wi~~~el~~~~~~~~~~~ii 131 (141) T Consensus 72 ~~~~~~~~~~~~~~E~~e~rW~~~del~el~~~~~~R~iv 111 (112) T cd04667 72 VASVPPSAQPKPSNEIADCRWLSLDALGDLNASAATRLIV 111 (112) T ss_pred EEEECCCCCCCCCCCCEEEEEEEHHHCCCCCCCHHHHHHC T ss_conf 9997588641899742147998699963688994672101

HHsearch alignment for GI: 254780325 and conserved domain: cd04667