>cd01494 AAT_I Aspartate aminotransferase (AAT) superfamily (fold type I) of pyridoxal phosphate (PLP)-dependent enzymes. PLP combines with an alpha-amino acid to form a compound called a Schiff base or aldimine intermediate, which depending on the reaction, is the substrate in four kinds of reactions (1) transamination (movement of amino groups), (2) racemization (redistribution of enantiomers), (3) decarboxylation (removing COOH groups), and (4) various side-chain reactions depending on the enzyme involved. Pyridoxal phosphate (PLP) dependent enzymes were previously classified into alpha, beta and gamma classes, based on the chemical characteristics (carbon atom involved) of the reaction they catalyzed. The availability of several structures allowed a comprehensive analysis of the evolutionary classification of PLP dependent enzymes, and it was found that the functional classification did not always agree with the evolutionary history of these enzymes. Structure and sequence analysis

Probab=99.33 E-value=2.1e-12 Score=101.57 Aligned_cols=161 Identities=21% Similarity=0.237 Sum_probs=101.8 Q ss_pred HHHHHHHHHHC--CCCCCCCCCCCCCCHHHHHHHHHHHHHCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC Q ss_conf 99998652010--1333123565554035677766543200134786002343546565432123455321134799986 Q gi|254780432|r 77 EIFANHLIHST--FADRVFFTNSGAESVECAIKTARRYHYMAGKTNKFRIVTFEGAFHGRTLATISAGGKLQYLEGFGPK 154 (392) Q Consensus 77 ~~la~~L~~~~--~~~~v~f~~SGseA~e~Aiklar~~~~~~g~t~r~~ii~~~~~yHG~t~~a~s~s~~~~~~~~~~p~ 154 (392) T Consensus 3 ~e~e~~la~~~~~~~~~~i~~~sgt~A~~~~~~~l~-------~~g-d~vi~~~~~~~s~~~~~~~~~g~~~~~~~~~-- 72 (170) T cd01494 3 EELEEKLARLLQPGNDKAVFVPSGTGANEAALLALL-------GPG-DEVIVDANGHGSRYWVAAELAGAKPVPVPVD-- 72 (170) T ss_pred HHHHHHHHHHHCCCCCEEEEECHHHHHHHHHHHHHH-------CCC-CEEEECCCCHHHHHHHHHHHCCCEEEEECCC-- T ss_conf 999999999848998989995669999999999972-------799-9999826843756899998659877872347-- Q ss_pred CCCCCCCCCHHHHHHH-HHCCCCCCCCCCCCCCCCCCCCCCCHHHHHHHHCCCCCCCCEEEECCCCCCCCCCC-CCCCCC Q ss_conf 4333222100268875-41012332222333222211246210123221102234572131011003444455-531011 Q gi|254780432|r 155 IEGFDQAKFCDLQSLK-NQISNDTAAILIEPIQGEGGVRKVPEEFLQQLRKICDDIDALLIFDEVQTGYGRTG-KLFAYE 232 (392) Q Consensus 155 ~~~~~~~~~~d~~~l~-~~~~~~iAavi~Epv~g~~G~~~~~~~~l~~l~~lc~~~g~llI~DEV~tG~GRtG-~~f~~e 232 (392) T Consensus 73 ---~~~~~~~~~~~~~~~~~~~~~~~i~~~~~~~~~g~~~~----l~~I~~la~~~gi~livD~a~~~-g~~~~~~~~~~ 144 (170) T cd01494 73 ---DAGYGGLDVAILEELKAKPNVALIVITPNTTSGGVLVP----LKEIRKIAKEYGILLLVDAASAG-GASPAPGVLIP 144 (170) T ss_pred ---CCCCCCCCHHHHHHHHCCCCCEEEEEEEECCCCCCCCC----HHHHHHHHHHCCCEEEEECCCHH-CCCCCCCCCCC T ss_conf ---78755468999999855999636887740147873201----99997356207969999468432-16066666777 Q ss_pred CCCCCCCEEECC--CCCCCCCCCCCCCC Q ss_conf 124545302103--44444434432100 Q gi|254780432|r 233 WANVKPDIMTIA--KGMGGGFPIGACLA 258 (392) Q Consensus 233 ~~gi~PDi~~~g--K~l~gG~P~sav~~ 258 (392) T Consensus 145 ~~--~~D~~~~s~hK~lg~-~g~g~l~~ 169 (170) T cd01494 145 EG--GADVVTFSLHKNLGG-EGGGVVIV 169 (170) T ss_pred CC--CCEEEEECCCCCCCC-CCEEEEEE T ss_conf 78--985999898666789-85799998

HHsearch alignment for GI: 254780432 and conserved domain: cd01494