[Regulation of key enzymes of L-alanine biosynthesis by Brevibacterium flavum producer strains].

The mechanisms of L-alanine overproduction by Brevibacterium flavum producer strains were studied. It was shown that beta-CI-L-alanine is an inhibitor of some key enzymes involved in the synthesis of L-alanine, including alanine transaminase and valine-pyruvate transaminase. Two highly active B.

[Crystal formation peculiarities in pigmented cultures of Bacillus thuringiensis].

A direct correlation has been established between pink-colored pigmentation and the production of insecticide crystals (toxins) for some Bacillus thuringiensis (BT) pigmented cultures. This regularity was for the first time determined by us for BT strains ofthe H3, H10, and H16 serotype. Pigment-free clones of these serotypes do not produce crystals.