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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Mukhopadhyay, Abhijit Wei, Baoxian Weiner, Henry |
| Description | Author Affiliation: Mukhopadhyay A ( Department of Biochemistry, Purdue University, West Lafayette, IN 47907, USA. mukhopad1@gmail.com) |
| Abstract | BACKGROUND: In a previous study, we deleted three aldehyde dehydrogenase (ALDH) genes, involved in ethanol metabolism, from yeast Saccharomyces cerevisiae and found that the triple deleted yeast strain did not grow on ethanol as sole carbon source. The ALDHs were NADP dependent cytosolic ALDH1, NAD dependent mitochondrial ALDH2 and NAD/NADP dependent mitochondrial ALDH5. Double deleted strain ΔALDH2+ΔALDH5 or ΔALDH1+ΔALDH5 could grow on ethanol. However, the double deleted strain ΔALDH1+ΔALDH2 did not grow in ethanol. METHODS: Triple deleted yeast strain was used. Mitochondrial NAD dependent ALDH from yeast or human was placed in yeast cytosol. RESULTS: In the present study we found that a mutant form of cytoplasmic ALDH1 with very low activity barely supported the growth of the triple deleted strain (ΔALDH1+ΔALDH2+ΔALDH5) on ethanol. Finding the importance of NADP dependent ALDH1 on the growth of the strain on ethanol we examined if NAD dependent mitochondrial ALDH2 either from yeast or human would be able to support the growth of the triple deleted strain on ethanol if the mitochondrial form was placed in cytosol. We found that the NAD dependent mitochondrial ALDH2 from yeast or human was active in cytosol and supported the growth of the triple deleted strain on ethanol. CONCLUSION: This study showed that coenzyme preference of ALDH is not critical in cytosol of yeast for the growth on ethanol. GENERAL SIGNIFICANCE: The present study provides a basis to understand the coenzyme preference of ALDH in ethanol metabolism in yeast. |
| ISSN | 00063002 |
| Journal | Biochimica et Biophysica Acta (BBA) - Reviews on Cancer |
| Issue Number | 6 |
| Volume Number | 1830 |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2013-06-01 |
| Publisher Place | Netherlands |
| Access Restriction | Open |
| Subject Keyword | Aldehyde Dehydrogenase Metabolism Ethanol Isoenzymes Mitochondrial Proteins Retinal Dehydrogenase Saccharomyces Cerevisiae Proteins Saccharomyces Cerevisiae Enzymology Genetics Cytosol Gene Deletion Genetic Complementation Test Mitochondria Research Support, N.I.H., Extramural Biochemistry |
| Content Type | Text |
| Resource Type | Article |
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