Incomplete tricarboxylic acid cycle in a type I methylotroph, Methylococcus capsulatus

Alpha-Ketoglutaratedehydrogenase was undetectable in extracts of Methylococcus capsulatus. Cells incorporated [1-14-C] acetate into only four protein amino acids (glutamate, proline, arginine, and leucine) and the C5, but not C1, of glutamate.