>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 = 43.1 bits (102), Expect = 5e-04
 Identities = 33/134 (24%), Positives = 49/134 (36%), Gaps = 27/134 (20%)

Query: 8   KTLLIIGAGPIVIGQACEFDYSGTQACKALKEEGYRIILVNSNPATIMTDPDLA-----D 62
            T+L++GAG +  G          Q  KA    G R+I+ + +   +    +LA     D
Sbjct: 136 DTVLVLGAGGV--GLLA------AQLAKAA---GARVIVTDRSDEKL----ELAKELGAD 180

Query: 63  AT--YTEPITPEVVAKIIEKERPDAILPTTGGQTALNTALSLKRMGVLDRYGVEMIGAKP 120
               Y E    E   ++      D ++   GG   L  AL L R G   R  V  +G   
Sbjct: 181 HVIDYKEE-DLEEELRLTGGGGADVVIDAVGGPETLAQALRLLRPGG--RIVV--VGGTS 235

Query: 121 ETIDKAEDRSLFSK 134
                 + R L  K
Sbjct: 236 GGPPLDDLRRLLFK 249