Fig. 3From: Structure-guided protein engineering of ammonia lyase for efficient synthesis of sterically bulky unnatural amino acidsActivity fingerprints of EcMAL and its variants (M6–M8) with different substrates. The activity was measured by HPLC, and relative activity is measured as a percentage of the optimum activity of each substrate (1a caffeic acid, 1b cinnamic acid, 1c p-hydroxycinnamic acid, 1d methylcinnamic acid, 1e acrylic acid)Back to article page