>cd07587 ML_beta-AS mammalian-like beta-alanine synthase (beta-AS) and similar proteins (class 5 nitrilases). This subgroup includes mammalian-like beta-AS (EC 3.5.1.6, also known as beta-ureidopropionase or N-carbamoyl-beta-alanine amidohydrolase). This enzyme catalyzes the third and final step in the catabolic pyrimidine catabolic pathway responsible for the degradation of uracil and thymine, the hydrolysis of N-carbamyl-beta-alanine and N-carbamyl-beta-aminoisobutyrate to the beta-amino acids, beta-alanine and beta-aminoisobutyrate respectively. This subgroup belongs to a larger nitrilase superfamily comprised of nitrile- or amide-hydrolyzing enzymes and amide-condensing enzymes, which depend on a Glu-Lys-Cys catalytic triad. This superfamily has been classified in the literature based on global and structure based sequence analysis into thirteen different enzyme classes (referred to as 1-13), this subgroup corresponds to class 5. Members of this superfamily generally form homomeric

Probab=99.70 E-value=2.8e-16 Score=124.49 Aligned_cols=239 Identities=14% Similarity=0.114 Sum_probs=163.9 Q ss_pred CCCCCCCCCCCCCCH--HH--HHHHHHHHHHHHHHHHHCCCCCCCCCCEEEECCCC-CCCCHH--------------HHH Q ss_conf 555321001244203--55--54333357899875431013346686189831210-110001--------------123 Q gi|254780425|r 240 KISPVIRIVQPGINP--AI--KEDREKILERYLSLTALPVSAGELEPVIIVWAYLP-FPFSIV--------------DQP 300 (518) Q Consensus 240 ~~~~~V~iVQpni~~--~~--k~~~~~~~~~~~~l~~~~~~~~~~~~dLiVWPEsa-~p~~~~--------------~~~ 300 (518) T Consensus 61 pr~vrvg~iqn~i~~pt~~p~~~q~~ai~~~i~~~i~---~Aa~~gvni~c~qe~w~mpfafctrek~pw~efae~a~~G 137 (363) T cd07587 61 PRIVRVGLIQNKIVLPTTAPIAEQREAIHDRIKKIIE---AAAMAGVNIICFQEAWTMPFAFCTREKLPWCEFAESAEDG 137 (363) T ss_pred CCEEEEEEEECCCCCCCCCCHHHHHHHHHHHHHHHHH---HHHHCCCCEEEEEHHHCCCCEECCCCCCCHHHHCCCCCCC T ss_conf 8478997874045599986689999999999999999---9997598799840010587211135777602212667779 Q ss_pred HHHHHHHHHHCCCCEEEECCCCCCCCCCCCCEEEEEECCCCCCCCCCCCCCEEEEEHHHHHCCCCHHHHHHHHCCCCCCC Q ss_conf 46677656410798242011001234557512100003673212211125633422133100100001211100122221 Q gi|254780425|r 301 SILKKIASVLKINQLLIVGSMRKELVDGRSHFYKSIYIINSKGEILASSNAKHLVPFAEYLPYRNILKKLNLDFYMFPLD 380 (518) Q Consensus 301 ~~~~~l~~~~~~~~~li~G~~~~~~~~~~~~~yNs~~~~~~~g~~~~~Y~K~~LVPFGEyiP~~~~~~~l~~~~~~~~~~ 380 (518) T Consensus 138 ptt~~~~~~A~k~~mViv~pi~Erd~~~~~~~~NTavVId~dG~~lGkyRK~H-IP~~---~----------~-f~EkfY 202 (363) T cd07587 138 PTTKFCQELAKKYNMVIVSPILERDEEHGDTIWNTAVVISNSGNVLGKSRKNH-IPRV---G----------D-FNESTY 202 (363) T ss_pred CHHHHHHHHHHHCCEEEEEECCCCCCCCCCEEEEEEEEECCCCCEEEEEECCC-CCCC---C----------C-CCEEEC T ss_conf 36999999999849699984200334458757866899978986642221133-8999---9----------9-553121 Q ss_pred CCCCCCCCCEEECCCCEEECCCCHHHHHHHHHHC--CCCCCEEEEECCCCCCCC-CHH-HHHHHHHHHHHHHCCCEEEEE Q ss_conf 0135877620001220010222166655888851--269977999627755767-628-999999999999729919998 Q gi|254780425|r 381 YSSSDISPLLGLSEKLRLYPLLFSDALFHQDINN--LENVSAILNIIDDSGFMG-SGT-DHSFRYAQIQAVEIGLPLIRA 456 (518) Q Consensus 381 ~~~g~~~~~~~~~~~~~~~~~ICyE~~f~~~~r~--~~~a~~lvn~tNd~Wf~~-s~~-~qH~~~a~~RAiE~~r~~vra 456 (518) T Consensus 203 f~pGn~G~~Vf~T~~GkIGV~IC~DqwfPe~aR~~aL~GAEIvf~PtA--t~g~~se~~W~--~eqr~hAiAN~~~v~ai 278 (363) T cd07587 203 YMEGNTGHPVFETQFGKIAVNICYGRHHPLNWLMYGLNGAEIVFNPSA--TVGALSEPMWP--IEARNAAIANSYFTVGI 278 (363) T ss_pred CCCCCCCCCCEECCCCEEEEEEECCCCCHHHHHHHHHCCCEEEECCCC--CCCCCCHHHHH--HHHHHHHHHCCCCEEEE T ss_conf 368878987554364116645631543748899864168649975455--45652367899--98899999708837982 Q ss_pred ECC-------------------------CCCEEECCCCEEEEECCCCCCEEEEEEECCCCCCCHHHHHH Q ss_conf 559-------------------------70469989980877738998279999960676876878655 Q gi|254780425|r 457 TNN-------------------------GVSAFLDERGQIISSVYADRGASIDMHFQPKVRDSFRSSIQ 500 (518) Q Consensus 457 ~nt-------------------------GiS~~id~~G~i~~~~~~~~~~~l~~~v~~~~~~T~y~~~g 500 (518) T Consensus 279 NRVG~E~~pne~tsGdg~~a~~d~g~FYGSSfia~P~G~~~~~lsr~~eglLV~eiDL~~~rqvR~~W~ 347 (363) T cd07587 279 NRVGTEVFPNEFTSGDGKPAHKDFGHFYGSSYVAAPDGSRTPGLSRTRDGLLVAELDLNLCRQVKDKWG 347 (363) T ss_pred CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCEEECCCCCCCCCCCCCCCCEEEEEECHHHHHHHHHHCC T ss_conf 355625676544567775343557642252147889987645778887636999933689999987478

HHsearch alignment for GI: 254780425 and conserved domain: cd07587