Evidence for distinct L-methionine catabolic pathways in the yeast Geotrichum candidum and the bacterium Brevibacterium linens

Article Abstract:

The tracing experiments were carried out to identify volatile and nonvolatile L-methionine degradation intermediates and end products in the yeast Geotrichum candidum and in the bacterium Brevibacterium linens. The results showed that L-methionine catabolism was initiated by an aminotransferase in Geotrichum candidum and the transmination product 4-methylthio-2-oxobutyric acid was subsequently degraded to methanethiol and alpha-KB.

Bacteria, Methionine, Catabolism

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Gene expression and biochemical analysis of cheese-ripening yeasts: focus on catabolism of L-methionine, lactate, and lactose

Article Abstract:

DNA microarrays from the yeasts Debaryomyces hansenii, Kluyveromyces marxianus and Yarrowia lipolytica are developed for determining which genes are expressed in a medium mimicking, a cheese-ripening environment. The studies show that multispecies microarray can be used as a powerful tool to examine targeted metabolism and possible metabolic interactions between species within microbial cocultures.

Genetic aspects, Gene expression, RNA, DNA microarrays, RNA synthesis

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Involvement of a branched-chain aminotransferase in production of volatile sulfur compounds in Yarrowia lipolytica

Article Abstract:

Yarrowia lipolytica strains for production of volatile sulfur compounds (VSCs), L-methionine degrading and aminotransferase activity were investigated. It was observed that L-methionine degradation via transamination is involved in the formation of VSCs in Yarrowia lipolytica.

All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Sulfur Compounds, Physiological aspects, Biodegradation, Sulphur compounds

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