Abstract
An NAD+-dependent D-arabinitol dehydrogenase (polyol dehydrogenase) gene was isolated from Pichia stipitis CBS 6054 and cloned in Saccharomyces cerevisiae. The gene was isolated by screening of a λ-cDNA library with a zymogram technique. D-Arabinitol, xylitol, D-glucitol and galactitol are substrates for the recominant protein. With D-arabinitol as substrate the reaction product is D-ribulose. The molecular weight of the native tetramer enzyme is 110 000 Da and the monomer is 30 000 Da. The amino acid sequence is homologous to the short-chain dehydrogenase family. It is 85·5% identical to a D-arabinitol dehydrogenase from Candida albicans. The gene in P. stipitis was induced by D-arabinitol and P. stipitis was able to grow on D-arabinitol. The physiological role of D-arabinitol metabolism is discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 839-847 |
| Journal | Yeast |
| Volume | 11 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 1 Jan 1995 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- arabinitol metabolism
- ARDH
- D-arabinitol dehydrogenase
- overexpression
- Pichia stipitis
- Saccharomyces cerevisiae
- xylose metabolism
- yeast
- zymogram screening
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