>cd04669 Nudix_Hydrolase_11 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=99.84 E-value=1e-20 Score=141.01 Aligned_cols=112 Identities=23% Similarity=0.243 Sum_probs=76.2 Q ss_pred EEEEEEECCCCCEEEEEECCCCCCCCCCCCCCCCCCCCCCCCHHHHHHHHHHHHHCCCCCCCCCCCCCCEEECCCCCCCC Q ss_conf 06999984898399999268877666872201211507888888999999999837552222201366124116322200 Q gi|254780557|r 5 GVGILILNQDDLVWVGRRCFHDNNKHLSLWQMPQGGINPQEDPLDAAYRELYEETGIKSISLLGQGDSYIQYDFPAHCIQ 84 (160) Q Consensus 5 ~V~vvi~n~~~~iLl~kR~~~~~~~~~g~W~~PgG~ve~gEt~~~Aa~REl~EEtGi~~~~~~~~~~~~~~~~~~~~~~~ 84 (160) T Consensus 2 Ra~~ii~~~~~~vLl~~r~~~~----~~~w~~PGG~ve~gEt~~~a~~RE~~EE~g~~v~~~~~~~----~~-------- 65 (121) T cd04669 2 RASIVIINDQGEILLIRRIKPG----KTYYVFPGGGIEEGETPEEAAKREALEELGLDVRVEEIFL----IV-------- 65 (121) T ss_pred EEEEEEEECCCEEEEEEECCCC----CCEEECCCCEECCCCCHHHHHHHHHHHHCCCEEEEEEEEE----EE-------- T ss_conf 2899999779999999984899----9869899606059999999999998876098899655999----99-------- Q ss_pred CCCCCCCCCEEEEEEECCCCCCEECCCC-CCCCCCCCCEEEECCHHHHHHC Q ss_conf 0011234433799998047543010578-8888886003760378997630 Q gi|254780557|r 85 ENGYVGQMQKWFAFRFQGLTSEICVDRT-AYGYESEFDAWTWVSLWDTPNI 134 (160) Q Consensus 85 ~~~~~~~~~~~~~~~~~~~~~~i~~~~~-~~~~~~E~~~~~Wv~~~el~~~ 134 (160) T Consensus 66 --~~~~~~~~~F~~~i~~g~~~~~~~~e~~~~~~~~~~e~~WvpldeL~~l 114 (121) T cd04669 66 --NQNGRTEHYFLARVISGKLGLGVGEEFERQSDDNQYHPVWVDLDQLETI 114 (121) T ss_pred --EECCCEEEEEEEEEECCEECCCCCCCCCCCCCCCEEEEEEEEHHHHCCC T ss_conf --7479806999999981478158784235778887289999779992728

HHsearch alignment for GI: 254780557 and conserved domain: cd04669