>gnl|CDD|176236 cd08275, MDR3, 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 = 337

 Score =  199 bits (508), Expect = 1e-51
 Identities = 100/341 (29%), Positives = 167/341 (48%), Gaps = 20/341 (5%)

Query: 8   RHVAMSGYGKSNVMFLAESPIPQPQKEEILIKVEAIGVNRPDVMQRKGLYPPPKNANPIL 67
           R V ++G+G  + + + +  +P+P   E+ ++VEA G+N  D+M R+GLY        + 
Sbjct: 1   RAVVLTGFGGLDKLKVEKEALPEPSSGEVRVRVEACGLNFADLMARQGLYDSAPKPPFVP 60

Query: 68  GLEVAGKIVDLGENTTHWNIGDEVCALVNGGGYAEYCLSHQGHTLPIPKGYNAIQAASLP 127
           G E AG +  +GE    + +GD V  L   GGYAE          P+P G +  +AA+ P
Sbjct: 61  GFECAGTVEAVGEGVKDFKVGDRVMGLTRFGGYAEVVNVPADQVFPLPDGMSFEEAAAFP 120

Query: 128 ESFFTVWANLFQTANLRSGQTVLIHGGSSGIGTTAIQLAS-YFGATVYTTAKSEEKCLAC 186
            ++ T +  LF+  NLR GQ+VL+H  + G+G  A QL       TV  TA S  K  A 
Sbjct: 121 VNYLTAYYALFELGNLRPGQSVLVHSAAGGVGLAAGQLCKTVPNVTVVGTA-SASKHEAL 179

Query: 187 LKLGAKHAINYLKEDFLEILQKETQGRGIDIILDMVGAEYLNQHLTLLSKEGKLIIISF- 245
            + G  H I+Y  +D++E ++K +   G+DI+LD +G E   +   LL   G+L++    
Sbjct: 180 KENGVTHVIDYRTQDYVEEVKKIS-PEGVDIVLDALGGEDTRKSYDLLKPMGRLVVYGAA 238

Query: 246 ------------LGGNIATEINLNPI--ISKRITITGSTLRRRTDIAKQSIRDSLQLKIW 291
                       L         ++P+  IS+  ++ G  L    +  ++ +   +  K+ 
Sbjct: 239 NLVTGEKRSWFKLAKKWWNRPKVDPMKLISENKSVLGFNLGWLFE--ERELLTEVMDKLL 296

Query: 292 PLLNSHVIAPVIHTVLPLGKVAMAHDIMEKSEHIGKIILLP 332
            L     I P I +V P  +V  A   ++  ++IGK++L P
Sbjct: 297 KLYEEGKIKPKIDSVFPFEEVGEAMRRLQSRKNIGKVVLTP 337