S. Tsuruta et al., DENITRIFICATION BY YEASTS AND OCCURRENCE OF CYTOCHROME P450NOR IN TRICHOSPORON-CUTANEUM, FEMS microbiology letters, 168(1), 1998, pp. 105-110
Yeasts of various genera were screened for denitrifying activity, and
several yeast strains such as Trichosporon cutaneum, Fellomyces fuzhou
ensis, and Candida sp. were found to exhibit distinct activities to co
nvert nitrite to nitrous oxide. Dissimilatory nitrite reductase (Nir)
or nitric oxide reductase (Nor) activities were detected in the cell-f
ree extracts of these yeasts. Spectrophotometric as well as Western bl
ot analyses showed that T. cutaneum contains Nor of the cytochrome P45
0 type. This is the first report that shows that denitrification is al
so distributed among yeasts although their systems are incomplete, onl
y capable of reducing nitrite to nitrous oxide. (C) 1998 Federation of
European Microbiological Societies. Published by Elsevier Science B.V
. All rights reserved.