>gnl|CDD|176233 cd08272, MDR6, Medium chain dehydrogenases/reductase (MDR)/zinc-dependent alcohol dehydrogenase-like family. This group is a member of the medium chain dehydrogenases/reductase (MDR)/zinc-dependent alcohol dehydrogenase-like family, but lacks the zinc-binding sites of the zinc-dependent alcohol dehydrogenases. The medium chain dehydrogenases/reductase (MDR)/zinc-dependent alcohol dehydrogenase-like family, which contains the zinc-dependent alcohol dehydrogenase (ADH-Zn) and related proteins, is a diverse group of proteins related to the first identified member, class I mammalian ADH. MDRs display a broad range of activities and are distinguished from the smaller short chain dehydrogenases (~ 250 amino acids vs. the ~ 350 amino acids of the MDR). The MDR proteins have 2 domains: a C-terminal NAD(P)-binding Rossmann fold domain of a beta-alpha form and an N-terminal catalytic domain with distant homology to GroES. The MDR group contains a host of activities, including the founding alcohol dehydrogenase (ADH), quinone reductase, sorbitol dehydrogenase, formaldehyde dehydrogenase, butanediol DH, ketose reductase, cinnamyl reductase, and numerous others. The zinc-dependent alcohol dehydrogenases (ADHs) catalyze the NAD(P)(H)-dependent interconversion of alcohols to aldehydes or ketones. Active site zinc has a catalytic role, while structural zinc aids in stability. ADH-like proteins typically form dimers (typically higher plants, mammals) or tetramers (yeast, bacteria), and generally have 2 tightly bound zinc atoms per subunit. The active site zinc is coordinated by a histidine, two cysteines, and a water molecule. The second zinc seems to play a structural role, affects subunit interactions, and is typically coordinated by 4 cysteines. Length = 326

 Score =  218 bits (558), Expect = 1e-57
 Identities = 109/340 (32%), Positives = 161/340 (47%), Gaps = 32/340 (9%)

Query: 7   MRHVAMSGYGKSNVMFLAESPIPQPQKEEILIKVEAIGVNRPDVMQRKGLYPPPKNANPI 66
           M+ + +  +G   V  L E P PQP   ++L++V A GVN  D   R+G          I
Sbjct: 1   MKALVLESFGGPEVFELREVPRPQPGPGQVLVRVHASGVNPLDTKIRRGGAAARPPLPAI 60

Query: 67  LGLEVAGKIVDLGENTTHWNIGDEVCALVNG-----GGYAEYCLSHQGHTLPIPKGYNAI 121
           LG +VAG +  +GE  T + +GDEV     G     G  AEY +         P   +  
Sbjct: 61  LGCDVAGVVEAVGEGVTRFRVGDEVYGCAGGLGGLQGSLAEYAVVDARLLALKPANLSMR 120

Query: 122 QAASLPESFFTVWANLFQTANLRSGQTVLIHGGSSGIGTTAIQLASYFGATVYTTAKSEE 181
           +AA+LP    T W  L   A +++GQTVLIHGG+ G+G  A+QLA   GA VY TA SE+
Sbjct: 121 EAAALPLVGITAWEGLVDRAAVQAGQTVLIHGGAGGVGHVAVQLAKAAGARVYATASSEK 180

Query: 182 KCLACLKLGAKHAINYLKEDFLEILQKETQGRGIDIILDMVGAEYLNQHLTLLSKEGKLI 241
              A   LGA   I Y +E  +E + + T GRG D++ D VG E L+     ++  G+++
Sbjct: 181 AAFAR-SLGADPIIYY-RETVVEYVAEHTGGRGFDVVFDTVGGETLDASFEAVALYGRVV 238

Query: 242 IISFLGGNIATEINLNPIISKRITI----------TGSTLRRRTDIAKQSIRDSLQLKIW 291
            I  LGG      +L P+  +  T           TG       +I +++ R        
Sbjct: 239 SI--LGG---ATHDLAPLSFRNATYSGVFTLLPLLTGEGRAHHGEILREAAR-------- 285

Query: 292 PLLNSHVIAPVIH-TVLPLGKVAMAHDIMEKSEHIGKIIL 330
            L+    + P++     PL + A AH  +E     GKI++
Sbjct: 286 -LVERGQLRPLLDPRTFPLEEAAAAHARLESGSARGKIVI 324