RPSBLAST alignment for GI: 254780290 and conserved domain: cd08264

>gnl|CDD|176225 cd08264, Zn_ADH_like2, Alcohol dehydrogenases of the MDR family. This group resembles the zinc-dependent alcohol dehydrogenases of the medium chain dehydrogenase family. However, this subgroup does not contain the characteristic catalytic zinc site. Also, it contains an atypical structural zinc-binding pattern: DxxCxxCxxxxxxxC. NAD(P)(H)-dependent oxidoreductases are the major enzymes in the interconversion of alcohols and aldehydes, or ketones. Alcohol dehydrogenase in the liver converts ethanol and NAD+ to acetaldehyde and NADH, while in yeast and some other microorganisms ADH catalyzes the conversion acetaldehyde to ethanol in alcoholic fermentation. ADH is a member of the medium chain alcohol dehydrogenase family (MDR), which has a NAD(P)(H)-binding domain in a Rossmann fold of a beta-alpha form. The NAD(H)-binding region is comprised of 2 structurally similar halves, each of which contacts a mononucleotide. A GxGxxG motif after the first mononucleotide contact half allows the close contact of the coenzyme with the ADH backbone. The N-terminal catalytic domain has a distant homology to GroES. These proteins typically form dimers (typically higher plants, mammals) or tetramers (yeast, bacteria), and 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. NAD(H)-binding occurs in the cleft between the catalytic and coenzyme-binding domains at the active site, and coenzyme binding induces a conformational closing of this cleft. Coenzyme binding typically precedes and contributes to substrate binding. In human ADH catalysis, the zinc ion helps coordinate the alcohol, followed by deprotonation of a histidine, the ribose of NAD, a serine, then the alcohol, which allows the transfer of a hydride to NAD+, creating NADH and a zinc-bound aldehyde or ketone. In yeast and some bacteria, the active site zinc binds an aldehyde, polarizing it, and leading to the reverse reaction. Length = 325
 Score =  101 bits (253), Expect = 3e-22
 Identities = 88/318 (27%), Positives = 150/318 (47%), Gaps = 51/318 (16%)

Query: 7   MRHVAMSGYGKSNVMFLAESPIPQPQKEEILIKVEAIGVNRPD--VMQRKGLYPPPKNAN 64
           M+ +     G  N+    +   P+P   E+LI+V+  GVN  D  V+    + P P    
Sbjct: 1   MKALVFEKSGIENLKVE-DVKDPKPGPGEVLIRVKMAGVNPVDYNVINAVKVKPMPH--- 56

Query: 65  PILGLEVAGKIVDLGENTTHWNIGDEV----------CAL---------VNG-------- 97
            I G E AG + ++G++      GD V          C +          NG        
Sbjct: 57  -IPGAEFAGVVEEVGDHVKGVKKGDRVVVYNRVFDGTCDMCLSGNEMLCRNGGIIGVVSN 115

Query: 98  GGYAEYCLSHQGHTLPIPKGYNAIQAASLPESFFTVWANLFQTANLRSGQTVLIHGGSSG 157
           GGYAEY +  + +   IP   +   AASLP +  T + +  +TA L  G+TV++ G S  
Sbjct: 116 GGYAEYIVVPEKNLFKIPDSISDELAASLPVAALTAY-HALKTAGLGPGETVVVFGASGN 174

Query: 158 IGTTAIQLASYFGATVYTTAKSEEKCLACLKLGAKHAINY--LKEDFLEILQKETQGRGI 215
            G  A+QLA   GA V   A S +  L   + GA   ++Y  ++E   EI       +  
Sbjct: 175 TGIFAVQLAKMMGAEVI--AVSRKDWLK--EFGADEVVDYDEVEEKVKEIT------KMA 224

Query: 216 DIILDMVGAEYLNQHLTLLSKEGKLIII-SFLGGNIATEINLNPIISKRITITGSTLRRR 274
           D++++ +G+ + +  L++L + G+L+   +  GG +   ++L+ + SK+I+I GST   R
Sbjct: 225 DVVINSLGSSFWDLSLSVLGRGGRLVTFGTLTGGEVK--LDLSDLYSKQISIIGSTGGTR 282

Query: 275 TDIAK-QSIRDSLQLKIW 291
            ++ +   I   L++K+W
Sbjct: 283 KELLELVKIAKDLKVKVW 300