>gnl|CDD|133454 cd05312, NAD_bind_1_malic_enz, NAD(P) binding domain of malic enzyme (ME), subgroup 1. 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. This subfamily consists of eukaryotic and bacterial ME. 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 = 279

 Score =  124 bits (315), Expect = 7e-29
 Identities = 93/284 (32%), Positives = 132/284 (46%), Gaps = 48/284 (16%)

Query: 180 GTAVTVTAATLNGMKLVGKKFSDIKIVTLGAGAAALACLNLLVTMGVR--------RENI 231
           GTA    A  L  +++ GK  SD +I+ LGAG+A +   +L+V+  VR        R+ I
Sbjct: 3   GTAAVALAGLLAALRITGKPLSDQRILFLGAGSAGIGIADLIVSAMVREGLSEEEARKKI 62

Query: 232 WVYDLEGLVYEGREKKFDKWKSVYAQK---SGPKPLSETMNNA--DVFLGLS-VAGALDP 285
           W+ D +GL+ + R+     +K  +A+K      K L E +      V +GLS V GA   
Sbjct: 63  WLVDSKGLLTKDRKDL-TPFKKPFARKDEEKEGKSLLEVVKAVKPTVLIGLSGVGGAFTE 121

Query: 286 AILKFMA---EKPLIMVLANP--NPEAMPDEIKKVRPDAMICTGRSDFS----------- 329
            +++ MA   E+P+I  L+NP    E   ++  K      +    S F            
Sbjct: 122 EVVRAMAKSNERPIIFALSNPTSKAECTAEDAYKWTDGRALFASGSPFPPVEYNGKTYVP 181

Query: 330 NQVNNVLCFPYIFRGALDCGATAITEEMKVAAARAMAVLVRDVPPDVVFDNFAKESPVFG 389
            Q NN   FP I  GA+  GA  IT+EM +AAA A+A LV D       +  A+      
Sbjct: 182 GQGNNAYIFPGIGLGAILSGARHITDEMFLAAAEALASLVTD-------EELARGR---- 230

Query: 390 PNYLIPSPFDPNLISY-IAPAVAKAAEEAGVASS--PIEDYEVY 430
              L P   +   IS  IA AVAK A E G+A+   P ED E Y
Sbjct: 231 ---LYPPLSNIREISAQIAVAVAKYAYEEGLATRYPPPEDLEEY 271