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Article Dans Une Revue FEMS Microbiology Letters Année : 2001

Sulfur compound production by Geotrichum candidum from ?-methionine: importance of the transamination step

Résumé

L-Methionine degradation products and catabolic enzymatic activities involved in methanethiol generation were investigated in Geotrichum candidum GcG. L-Methionine was easily degraded by G. candidum and the transammation product.. 4-methylthio-2-oxobutyric acid (KMBA), was found to transiently accumulate. In parallel, considerable L-methionine aminotransferase activity was found in this microorganism. L-Methionine and KMBA demethiolating activities were also detected. The degradation of KMBA corresponded to an overall increase in the production of volatile sulfur compounds. These results show that the transamination pathway is of major importance in the initial breakdown of L-Methionine by this cheese-ripening microorganism.

Dates et versions

hal-03327857 , version 1 (27-08-2021)

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P Bonnarme, Kenza Arfi, Sandra Helinck, Mireille M. Yvon, Henri-Eric Spinnler. Sulfur compound production by Geotrichum candidum from ?-methionine: importance of the transamination step. FEMS Microbiology Letters, 2001, 205 (2), pp.247-252. ⟨10.1016/S0378-1097(01)00485-2⟩. ⟨hal-03327857⟩
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