RPSBLAST alignment for GI: 254780290 and conserved domain: cd08254
>gnl|CDD|176216 cd08254, hydroxyacyl_CoA_DH, 6-hydroxycyclohex-1-ene-1-carboxyl-CoA dehydrogenase, N-benzyl-3-pyrrolidinol dehydrogenase, and other MDR family members. This group contains enzymes of the zinc-dependent alcohol dehydrogenase family, including members (aka MDR) identified as 6-hydroxycyclohex-1-ene-1-carboxyl-CoA dehydrogenase and N-benzyl-3-pyrrolidinol dehydrogenase. 6-hydroxycyclohex-1-ene-1-carboxyl-CoA dehydrogenase catalyzes the conversion of 6-Hydroxycyclohex-1-enecarbonyl-CoA and NAD+ to 6-Ketoxycyclohex-1-ene-1-carboxyl-CoA,NADH, and H+. This group displays the characteristic catalytic and structural zinc sites of the zinc-dependent alcohol dehydrogenases. 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 have 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 = 338
Score = 129 bits (327), Expect = 9e-31
Identities = 87/353 (24%), Positives = 151/353 (42%), Gaps = 47/353 (13%)
Query: 12 MSGYGKSNV----MFLAESPIPQPQKEEILIKVEAIGVNRPDVMQRKGLYPPPKNANPIL 67
M + + L E P+P+P E+L+KV+A GV D+ G P L
Sbjct: 1 MKAWRFHKGSKGLLVLEEVPVPEPGPGEVLVKVKAAGVCHSDLHILDGGVPTLTKLPLTL 60
Query: 68 GLEVAGKIVDLGENTTHWNIGDEV----------CALVNG-----------------GGY 100
G E+AG +V++G T++ +GD V CAL GG+
Sbjct: 61 GHEIAGTVVEVGAGVTNFKVGDRVAVPAVIPCGACALCRRGRGNLCLNQGMPGLGIDGGF 120
Query: 101 AEYCLSHQGHTLPIPKGYNAIQAASLPESFFTVWANLFQTANLRSGQTVLIHGGSSGIGT 160
AEY + +P+P G QAA ++ T + + + ++ G+TVL+ G G+G
Sbjct: 121 AEYIVVPARALVPVPDGVPFAQAAVATDAVLTPYHAVVRAGEVKPGETVLV-IGLGGLGL 179
Query: 161 TAIQLASYFGATVYTTAKSEEKCLACLKLGAKHAINYLKEDFLEILQKETQGRGIDIILD 220
A+Q+A GA V EEK +LGA +N L + + G G D+I D
Sbjct: 180 NAVQIAKAMGAAVIAVDIKEEKLELAKELGADEVLNSLDDSPKDKKAAG-LGGGFDVIFD 238
Query: 221 MVGA-EYLNQHLTLLSKEGKLIIISFLGGNIATEINLNPIISKRITITGSTLRRRTDIAK 279
VG + G+++++ G ++L+ +I++ + I GS
Sbjct: 239 FVGTQPTFEDAQKAVKPGGRIVVVGL--GRDKLTVDLSDLIARELRIIGS-----FGGTP 291
Query: 280 QSIRDSLQLKIWPLLNSHVIAPVIHTVLPLGKVAMAHDIMEKSEHIGKIILLP 332
+ + + L L+ + P + T PL ++ + + K + G+++L+P
Sbjct: 292 EDLPEVLD-----LIAKGKLDPQVETR-PLDEIPEVLERLHKGKVKGRVVLVP 338