>gnl|CDD|176229 cd08268, MDR2, 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 = 328

 Score =  232 bits (594), Expect = 9e-62
 Identities = 115/340 (33%), Positives = 164/340 (48%), Gaps = 26/340 (7%)

Query: 7   MRHVAMSGYGKSNVMFLAESPIPQPQKEEILIKVEAIGVNRPDVMQRKGLYPPPKNANPI 66
           MR V    +G   V+ + E P+P P   E+LI+VEAIG+NR D M R+G Y  P      
Sbjct: 1   MRAVRFHQFGGPEVLRIEELPVPAPGAGEVLIRVEAIGLNRADAMFRRGAYIEPPPLPAR 60

Query: 67  LGLEVAGKIVDLGENTTHWNIGDEVCA-----LVNGGGYAEYCLSHQGHTLPIPKGYNAI 121
           LG E AG +  +G   T + +GD V       L   G YAEY L      + +P G + +
Sbjct: 61  LGYEAAGVVEAVGAGVTGFAVGDRVSVIPAADLGQYGTYAEYALVPAAAVVKLPDGLSFV 120

Query: 122 QAASLPESFFTVWANLFQTANLRSGQTVLIHGGSSGIGTTAIQLASYFGATVYTTAKSEE 181
           +AA+L   + T +  L + A LR G +VLI   SS +G  AIQ+A+  GATV  T ++ E
Sbjct: 121 EAAALWMQYLTAYGALVELAGLRPGDSVLITAASSSVGLAAIQIANAAGATVIATTRTSE 180

Query: 182 KCLACLKLGAKHAINYLKEDFLEILQKETQGRGIDIILDMVGAEYLNQHLTLLSKEGKLI 241
           K  A L LGA H I   +ED +  + + T G+G+D++ D VG     +    L+  G L+
Sbjct: 181 KRDALLALGAAHVIVTDEEDLVAEVLRITGGKGVDVVFDPVGGPQFAKLADALAPGGTLV 240

Query: 242 IISFLGGNIATEINLNPIISKRITITGSTL---------RRRTDIAKQSIRDSLQLKIWP 292
           +   L G           + K +T  G +L         RRR   A   I D        
Sbjct: 241 VYGALSGEPTPFPLKAA-LKKSLTFRGYSLDEITLDPEARRR---AIAFILD-------- 288

Query: 293 LLNSHVIAPVIHTVLPLGKVAMAHDIMEKSEHIGKIILLP 332
            L S  + PV+  V P   +  AH  +E  + IGKI++ P
Sbjct: 289 GLASGALKPVVDRVFPFDDIVEAHRYLESGQQIGKIVVTP 328