Regulation by carbon source of enzyme expression and slime production in bacterium W3A1

Slime production by bacterium W3A1 was greatly enhanced during growth on methanol and, to a lesser extent, during growth on trimethylamine. Of the major dehydrogenases synthesized, trimethylamine and methylamine dehydrogenases were induced to different levels by certain carbon sources, while methanol dehydrogenase was expressed during growth on all carbon sources.