ISSN:
1432-072X
Keywords:
Candida tropicalis
;
alkane utilization
;
Yeast peroxisomes
;
Long-chain alcohol dehydrogenase
;
Long-chain aldehyde dehydrogenase
;
Acyl-CoA synthetase
;
Glycerol-3-phosphate acyltransferase
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Long-chain alcohol dehydrogenase and longchain aldehyde dehydrogenase were induced in the cells of Candida tropicalis grown on n-alkanes. Subcellular localization of these dehydrogenases, together with that of acyl-CoA synthetase and glycerol-3-phosphate acyltransferase, was studied in terms of the metabolism of fatty acids derived from n-alkane substrates. Both longchain alcohol and aldehyde dehydrogenases distributed in the fractions of microsomes, mitochondria and peroxisomes obtained from the alkane-grown cells of C. tropicalis. Acyl-CoA synthetase was also located in these three fractions. Glycerol-3-phosphate acyltransferase was found in microsomes and mitochondria, in contrast to fatty acid β-oxidation system localized exclusively in peroxisomes. Similar results of the enzyme localization were also obtained with C. lipolytica grown on n-alkanes. These results suggest strongly that microsomal and mitochondrial dehydrogenases provide long-chain fatty acids to be utilized for lipid synthesis, whereas those in peroxisomes supply fatty acids to be degraded via β-oxidation to yield energy and cell constituents.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00406151
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