Bovine liver mitochondria have been found to contain an enzyme which will catalyze the formation of &aminolevulinic acid via a transamination reaction rather than via the condensation of glycine and succinyl coenzyme A. The enzyme, L-alanine:y,bdioxovaleric acid aminotransferase (y,&dioxovalerate transaminase) was isolated and purified to apparent homogeneity. y,&Dioxovalerate transaminase is q...