>gnl|CDD|176204 cd08242, MDR_like, Medium chain dehydrogenases/reductase (MDR)/zinc-dependent alcohol dehydrogenase-like family. This group contains members identified as related to zinc-dependent alcohol dehydrogenase and other members of the MDR family, including threonine dehydrogenase. 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 includes various 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 = 319

 Score = 51.1 bits (123), Expect = 5e-07
 Identities = 59/280 (21%), Positives = 99/280 (35%), Gaps = 56/280 (20%)

Query: 22  FLAESPIPQPQKEEILIKVEAIGVNRPDVMQRKGLYPPPKNANPILGLEVAGKIVDLGEN 81
            + + P P+P   E L++V   G+   D+   KG YP P     + G E  G + +  E 
Sbjct: 13  RVEDLPKPEPPPGEALVRVLLAGICNTDLEIYKGYYPFPG----VPGHEFVGIVEEGPE- 67

Query: 82  TTHW---------NIGDEVCAL-------------VNG-----GGYAEYCLSHQGHTLPI 114
                        NI    C               V G     G +AEY      +   +
Sbjct: 68  -AELVGKRVVGEINIACGRCEYCRRGLYTHCPNRTVLGIVDRDGAFAEYLTLPLENLHVV 126

Query: 115 PKGYNAIQAASLPESFFTVWA---NLFQTANLRSGQTVLIHGGSSG-IGTTAIQLASYFG 170
           P      QA      F    A    + +   +  G  V + G   G +G    Q+ +  G
Sbjct: 127 PDLVPDEQAV-----FAEPLAAALEILEQVPITPGDKVAVLG--DGKLGLLIAQVLALTG 179

Query: 171 ATVYTTAKSEEKCLACLKLGAKHAINYLKEDFLEILQKETQGRGIDIILDMVG-AEYLNQ 229
             V    +  EK    L L  +  +     + +   + E++G G D++++  G    L  
Sbjct: 180 PDVVLVGRHSEK----LALARRLGV-----ETVLPDEAESEGGGFDVVVEATGSPSGLEL 230

Query: 230 HLTLLSKEGKLIIISFLGGNIATEINLNPIISKRITITGS 269
            L L+   G +++ S   G  +   +L   +   IT+ GS
Sbjct: 231 ALRLVRPRGTVVLKSTYAGPAS--FDLTKAVVNEITLVGS 268