Figure 7. Analysis of 13 substrates conversion by strain S3.
A comparison of WT, W1, W2, and S3 (Table 1), revealed that all enzymes displayed high catalytic efficiency toward long-chain aliphatic amino acids (e.g., L-Leu and L-Ile). W1 exhibited good catalytic efficiency toward smaller amino acids (e.g., L-Val and L-Ala) and charged amino acids (e.g., L-Arg, L-Asp, and L-Glu); whereas W2 preferred large aromatic amino acids (e.g., L-Phe, L-Trp, and L-Tyr) and sulfur-containing L-Met. Most importantly, S3 showed elevated catalytic efficiency toward all the selected amino acids.