Fig. 1.
A. Central role of PDC in cellular energetics. B. PDC multi-enzyme complex. Abbreviations: TCA, tricarboxylic acid; e-, electrons; E1, pyruvate decarboxylase; E2, dihydrolipoamide transactylase; E3, dihydrolipoamide dehydrogenase; TPP, thiamine pyrophosphate; Lip, lipoate (reduced and oxidized).