>gnl|CDD|176188 cd05285, sorbitol_DH, Sorbitol dehydrogenase. Sorbitol and aldose reductase are NAD(+) binding proteins of the polyol pathway, which interconverts glucose and fructose. Sorbitol dehydrogenase is tetrameric and has a single catalytic zinc per subunit. Aldose reductase catalyzes the NADP(H)-dependent conversion of glucose to sorbital, and SDH uses NAD(H) in the conversion of sorbitol to fructose. NAD(P)(H)-dependent oxidoreductases are the major enzymes in the interconversion of alcohols and aldehydes, or ketones. The medium chain alcohol dehydrogenase family (MDR) have a NAD(P)(H)-binding domain in a Rossmann fold of a beta-alpha form. The N-terminal region typically has an all-beta catalytic domain. These proteins typically form dimers (typically higher plants, mammals) or tetramers (yeast, bacteria), and have 2 tightly bound zinc atoms per subunit. Length = 343

Score = 67.5 bits (166), Expect = 4e-12 Identities = 79/291 (27%), Positives = 122/291 (41%), Gaps = 54/291 (18%) Query: 21 MFLAESPIPQPQKEEILIKVEAIGVNRPDV----MQRKGLYPPPKNANP-ILGLEVAGKI 75 + L E PIP+P E+L++V A+G+ DV R G + + P +LG E AG + Sbjct: 10 LRLEERPIPEPGPGEVLVRVRAVGICGSDVHYYKHGRIGDFVVKE---PMVLGHESAGTV 66 Query: 76 VDLGENTTHWNIGDEVCALVNGG---GYAEYCLSHQGH-----------TLPIPKG---- 117 V +G TH +GD V + G E+C S G T P+ G Sbjct: 67 VAVGSGVTHLKVGDRVA--IEPGVPCRTCEFCKS--GRYNLCPDMRFAATPPVD-GTLCR 121 Query: 118 YNAIQAA---SLPESFFTVWANLF----------QTANLRSGQTVLIHGGSSG-IGTTAI 163 Y A LP++ L + A +R G TVL+ G +G IG Sbjct: 122 YVNHPADFCHKLPDNVSLEEGALVEPLSVGVHACRRAGVRPGDTVLVFG--AGPIGLLTA 179 Query: 164 QLASYFGAT-VYTTAKSEEKCLACLKLGAKHAINYLKEDFLEI---LQKETQGRGIDIIL 219 +A FGAT V T + +LGA H +N ED E + + G+G D+++ Sbjct: 180 AVAKAFGATKVVVTDIDPSRLEFAKELGATHTVNVRTEDTPESAEKIAELLGGKGPDVVI 239 Query: 220 DMVGAEY-LNQHLTLLSKEGKLIIISFLGGNIATEINLNPIISKRITITGS 269 + GAE + + G ++++ +G T + L+ + I I G Sbjct: 240 ECTGAESCIQTAIYATRPGGTVVLVG-MGKPEVT-LPLSAASLREIDIRGV 288

RPSBLAST alignment for GI: 254780290 and conserved domain: cd05285