Open AccessRegulation of enzyme synthesis in Hyphomicrobium X: Growth on mixtures of methylamine and ethanol in continuous cultures
Author(s) -
Brooke A.G.,
Attwood M.M.
Publication year - 1985
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1985.tb00871.x
Subject(s) - dilution , ethanol , methylamine , chemistry , enzyme , biochemistry , redistribution (election) , substrate (aquarium) , fermentation , biology , ecology , physics , politics , political science , law , thermodynamics
Hyphomicrobium X was grown on a range of mixtures of methylamine and ethanol at various dilution rates in continuous cultures. It was shown that both substrates were utilized simultaneously at all dilution rates below μ max ethanol, the biomass being the sum of the biomass obtained during growth on the single substrates alone. No evidence was observed for a redistribution of the carbon‐flow nor the ability to utilize the ‘poorer’ growth substrate‐ethanol, at dilution rates greater than μ max ethanol. Work is presented which suggests that the assimilatory pathway enzymes for either the C 1 ‐ or the C 2 ‐compound are regulated coordinately, but separately from the dissimilatory pathway enzymes associated with that compound.