>gnl|CDD|133442 cd00762, NAD_bind_malic_enz, NAD(P) binding domain of malic enzyme. Malic enzyme (ME), a member of the amino acid dehydrogenase (DH)-like domain family, catalyzes the oxidative decarboxylation of L-malate to pyruvate in the presence of cations (typically Mg++ or Mn++) with the concomitant reduction of cofactor NAD+ or NADP+. ME has been found in all organisms and plays important roles in diverse metabolic pathways such as photosynthesis and lipogenesis. This enzyme generally forms homotetramers. The conversion of malate to pyruvate by ME typically involves oxidation of malate to produce oxaloacetate, followed by decarboxylation of oxaloacetate to produce pyruvate and CO2. Amino acid DH-like NAD(P)-binding domains are members of the Rossmann fold superfamily and include glutamate, leucine, and phenylalanine DHs, methylene tetrahydrofolate DH, methylene-tetrahydromethanopterin DH, methylene-tetrahydropholate DH/cyclohydrolase, Shikimate DH-like proteins, malate oxidoreductases, and glutamyl tRNA reductase. Amino acid DHs catalyze the deamination of amino acids to keto acids with NAD(P)+ as a cofactor. The NAD(P)-binding Rossmann fold superfamily includes a wide variety of protein families including NAD(P)- binding domains of alcohol DHs, tyrosine-dependent oxidoreductases, glyceraldehyde-3-phosphate DH, lactate/malate DHs, formate/glycerate DHs, siroheme synthases, 6-phosphogluconate DH, amino acid DHs, repressor rex, NAD-binding potassium channel domain, CoA-binding, and ornithine cyclodeaminase-like domains. These domains have an alpha-beta-alpha configuration. NAD binding involves numerous hydrogen and van der Waals contacts. Length = 254

 Score =  110 bits (276), Expect = 2e-24
 Identities = 76/269 (28%), Positives = 119/269 (44%), Gaps = 47/269 (17%)

Query: 178 QHGTAVTVTAATLNGMKLVGKKFSDIKIVTLGAGAAALACLNLLVTMGVRR--------E 229
             GTA    A  L  +K+  KK S+ K++  GAGAAAL   NL+V + V+         +
Sbjct: 1   IQGTASVAVAGLLAALKVTKKKISEHKVLFNGAGAAALGIANLIVXLXVKEGISKEEACK 60

Query: 230 NIWVYDLEGLVYEGREKKFDKWKSVYAQKSGPKPLSETMNNA------DVFLGLS-VAGA 282
            IW  D +GL+ + R++     +   A+ + P+  S  + +A      D  +G+S V GA
Sbjct: 61  RIWXVDRKGLLVKNRKETCPN-EYHLARFANPERESGDLEDAVEAAKPDFLIGVSRVGGA 119

Query: 283 LDPAILKFMA---EKPLIMVLANPNPEA--MPDEIKKVRPDAMI-CTGRSDFSN------ 330
             P +++  A   E+P+I  L+NP  +A    +E         I  +G            
Sbjct: 120 FTPEVIRAXAEINERPVIFALSNPTSKAECTAEEAYTATEGRAIFASGSPFHPVELNGGT 179

Query: 331 ----QVNNVLCFPYIFRGALDCGATAITEEMKVAAARAMAVLVRDVPPDVVFDNFAKESP 386
               Q NN+  FP +  G + C    IT+++ ++AA A+A     V  + +         
Sbjct: 180 YKPGQGNNLYIFPGVALGVILCRIRHITDDVFLSAAEAIA---SSVTEESL--------- 227

Query: 387 VFGPNYLIPSPFDPNLISY-IAPAVAKAA 414
              P  L P  FD   +S  IA AVAK A
Sbjct: 228 --KPGRLYPPLFDIQEVSLNIAVAVAKYA 254