Gamma-aminobutyric acid pathway and modified tricarboxylic acid cycle activity during growth and sporulation of Bacillus thuringiensis.

Enzymatic analyses of Bacillus thuringiensis extracts suggest that a modified Krebs tricarboxylic acid cycle (without alpha-ketoglutarate dehydrogenase) can operate during sporulation in conjunction with the glyoxylic acid cycle and the gamma-aminobutyric acid pathway.