Is essential for both 2-oxoglutarate dehydrogenase (ODH) and pyruvate dehydrogenase (PDH) activities, but AceF has exclusively transacetylase (and no transsuccinylase) activity. The lipoyl residues required for ODH activity are likely provided by AceF. (R)-N(6)-dihydrolipoyl-L-lysyl-[protein] + acetyl-CoA = (R)-N(6)-(S(8)-acetyldihydrolipoyl)-L-lysyl-[protein] + CoA Binds 3 lipoyl cofactors covalently. Forms a 24-polypeptide structural core with octahedral symmetry (By similarity). Part of an unusual ODH/PDH supercomplex, consisting of AceE (E1), AceF (E2), and Lpd (E3) together with OdhA (E1+E2). Cells lacking this gene display no ODH and no PDH activities. Is the only lipoylated protein in C.glutamicum. Belongs to the 2-oxoacid dehydrogenase family.