Mutant
Mutant
mutation
Km (mM) Kcat (s-1) kcat/Km (s-1·mM-1) Specific activity (U·mg-1 protein)
L0 none none 1.35 0.61 0.45 1.07
L1 K38G K38G 0.93 4.37 4.70 5.68
L2 K38G /T40S K38G /T40S 1.49 8.56 5.74 12.97
L3 S36A /K38G /T40S S36A /K38G /T40S 0.77 4.04 5.25 5.34
L4 K151V K151V 0.76 3.16 4.16 4.81
L5 K151V/ G167I K151V/ G167I 0.68 5.76 8.47 8.35
L6 D139V/ K151V /G167I D139V/ K151V /G167I 0.62 9.18 14.81 21.03
L7 K38G/ T40S / D139V/K151V /G167I K38G/ T40S / D139V/K151V /G167I 0.59 19.45 32.97 48.94