RPSBLAST alignment for GI: 254780290 and conserved domain: cd08266

>gnl|CDD|176227 cd08266, Zn_ADH_like1, Alcohol dehydrogenases of the MDR family. This group contains proteins related to the zinc-dependent alcohol dehydrogenases. However, while the group has structural zinc site characteristic of these enzymes, it lacks the consensus site for a catalytic zinc. 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 = 342
 Score =  248 bits (635), Expect = 2e-66
 Identities = 114/355 (32%), Positives = 180/355 (50%), Gaps = 42/355 (11%)

Query: 7   MRHVAMSGYGKSNVMFLAESPIPQPQKEEILIKVEAIGVNRPDVMQRKGLYPPPKNANPI 66
           M+ V + G+G   V+   + P P+P  +E+L++V+A  +N  D+  R+G+         I
Sbjct: 1   MKAVVIRGHGGPEVLEYGDLPEPEPGPDEVLVRVKAAALNHLDLWVRRGMPGIKLPLPHI 60

Query: 67  LGLEVAGKIVDLGENTTHWNIGDEVCALVNGG---GYAEYCLS--------------HQG 109
           LG + AG +  +G   T+   G  V  ++  G   G  EYCL+              H  
Sbjct: 61  LGSDGAGVVEAVGPGVTNVKPGQRV--VIYPGISCGRCEYCLAGRENLCAQYGILGEHVD 118

Query: 110 HT------------LPIPKGYNAIQAASLPESFFTVWANLFQTANLRSGQTVLIHGGSSG 157
                         LPIP   +  +AA+ P +F T W  L   A LR G+TVL+HG  SG
Sbjct: 119 GGYAEYVAVPARNLLPIPDNLSFEEAAAAPLTFLTAWHMLVTRARLRPGETVLVHGAGSG 178

Query: 158 IGTTAIQLASYFGATVYTTAKSEEKCLACLKLGAKHAINYLKEDFLEILQKETQGRGIDI 217
           +G+ AIQ+A  FGATV  TA SE+K     +LGA + I+Y KEDF+  +++ T  RG+D+
Sbjct: 179 VGSAAIQIAKLFGATVIATAGSEDKLERAKELGADYVIDYRKEDFVREVRELTGKRGVDV 238

Query: 218 ILDMVGAEYLNQHLTLLSKEGKLIIISFLGGNIATEINLNPIISKRITITGSTLRRRTDI 277
           +++ VGA    + L  L++ G+L+      G  A  I+L  +  ++++I GST+  + ++
Sbjct: 239 VVEHVGAATWEKSLKSLARGGRLVTCGATTGYEA-PIDLRHVFWRQLSILGSTMGTKAEL 297

Query: 278 AKQSIRDSLQLKIWPLLNSHVIAPVIHTVLPLGKVAMAHDIMEKSEHIGKIILLP 332
                      +   L+    + PVI +V PL + A AH  +E  E  GKI+L P
Sbjct: 298 D----------EALRLVFRGKLKPVIDSVFPLEEAAEAHRRLESREQFGKIVLTP 342