>gnl|CDD|176223 cd08262, Zn_ADH8, Alcohol dehydrogenases of the MDR family. 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 = 341

 Score = 64.3 bits (157), Expect = 5e-11
 Identities = 83/360 (23%), Positives = 135/360 (37%), Gaps = 56/360 (15%)

Query: 7   MRHVAMSGYGKSNVMFLAESPIPQPQKEEILIKVEAIGV--------NRPDVMQRKGLYP 58
           MR            + + + P P+P   ++L+KV A G+          P+ M      P
Sbjct: 1   MRAAVFRD----GPLVVRDVPDPEPGPGQVLVKVLACGICGSDLHATAHPEAMVDDAGGP 56

Query: 59  PPKNANP--ILGLEVAGKIVDLGENTTH-WNIGDEVCAL-----------------VNGG 98
              +     +LG E  G++VD G  T     +G  V +L                    G
Sbjct: 57  SLMDLGADIVLGHEFCGEVVDYGPGTERKLKVGTRVTSLPLLLCGQGASCGIGLSPEAPG 116

Query: 99  GYAEYCLSHQGHTLPIPKGYNAIQAASLPESFFTVWANLFQTANLRSGQTVLIHGGSSGI 158
           GYAEY L  +   L +P G +   AA L E    V  +  + A L  G+  L+ G    I
Sbjct: 117 GYAEYMLLSEALLLRVPDGLSMEDAA-LTEP-LAVGLHAVRRARLTPGEVALVIGCGP-I 173

Query: 159 GTTAIQLASYFGA-TVYTTAKSEEKCLACLKLGAKHAINYLKEDFLEILQKETQGRGI-- 215
           G   I      G   +  +  S E+    L +GA   ++   +        E    G   
Sbjct: 174 GLAVIAALKARGVGPIVASDFSPERRALALAMGADIVVDPAADSPFAAWAAELARAGGPK 233

Query: 216 -DIILDMVGAEYLNQHLTLLSKEGKLIIISFLGGNIATEINLNPI--ISKRITITGSTLR 272
             +I + VGA  L Q +   +  G  I++  +G  + ++ N+ P   I K +T+  S   
Sbjct: 234 PAVIFECVGAPGLIQQIIEGAPPGGRIVV--VGVCMESD-NIEPALAIRKELTLQFSLGY 290

Query: 273 RRTDIAKQSIRDSLQLKIWPLLNSHVI--APVIHTVLPLGKVAMAHDIMEKSEHIGKIIL 330
              + A     D+L       L    +  AP++   + L  V  A + +   EH  KI++
Sbjct: 291 TPEEFA-----DALD-----ALAEGKVDVAPMVTGTVGLDGVPDAFEALRDPEHHCKILV 340