>gnl|CDD|176178 cd05188, MDR, Medium chain reductase/dehydrogenase (MDR)/zinc-dependent alcohol dehydrogenase-like family. The medium chain reductase/dehydrogenases (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. ADH-like proteins typically form dimers (typically higher plants, mammals) or tetramers (yeast, bacteria), and generally have 2 tightly bound zinc atoms per subunit, a catalytic zinc at the active site and a structural zinc in a lobe of the catalytic domain. 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. Other MDR members have only a catalytic zinc, and some contain no coordinated zinc. Length = 271

 Score =  185 bits (472), Expect = 1e-47
 Identities = 95/269 (35%), Positives = 136/269 (50%), Gaps = 27/269 (10%)

Query: 35  EILIKVEAIGVNRPDVMQRKGLYPPPKNANPILGLEVAGKIVDLGENTTHWNIGDEVCAL 94
           E+L++VEA G+   D+  R+G YPPP     ILG E AG +V++G   T   +GD V  L
Sbjct: 1   EVLVRVEAAGLCGTDLHIRRGGYPPPPKLPLILGHEGAGVVVEVGPGVTGVKVGDRVVVL 60

Query: 95  VNG-----------------------GGYAEYCLSHQGHTLPIPKGYNAIQAASLPESFF 131
            N                        GG+AEY +    + +P+P G +  +AA LPE   
Sbjct: 61  PNLGCGTCELCRELCPGGGILGEGLDGGFAEYVVVPADNLVPLPDGLSLEEAALLPEPLA 120

Query: 132 TVWANLFQTANLRSGQTVLIHGGSSGIGTTAIQLASYFGATVYTTAKSEEKCLACLKLGA 191
           T +  L +   L+ G TVL+ G   G+G  A QLA   GA V  T +S+EK     +LGA
Sbjct: 121 TAYHALRRAGVLKPGDTVLVLGA-GGVGLLAAQLAKAAGARVIVTDRSDEKLELAKELGA 179

Query: 192 KHAINYLKEDFLEILQKETQGRGIDIILDMVG-AEYLNQHLTLLSKEGKLIIISFLGGNI 250
            H I+Y +ED  E L + T G G D+++D VG  E L Q L LL   G+++++    G  
Sbjct: 180 DHVIDYKEEDLEEEL-RLTGGGGADVVIDAVGGPETLAQALRLLRPGGRIVVVGGTSGGP 238

Query: 251 ATEINLNPIISKRITITGSTLRRRTDIAK 279
             +  L  ++ K +TI GST   R D  +
Sbjct: 239 PLDD-LRRLLFKELTIIGSTGGTREDFEE 266