The glutamic dehydrogenase(GDH)-positive mutant, B. subtilis IRC-3-N-1, produced alanine dehydrogenase(ADH)when grown in nutrient medium. The formation of ADH by this mutant was inductive in nature.

• 枯草杆菌B.；subtilis IRC-3-N-1；GDH~+变种在营养培养基上生长时能产生ADH。