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. 2019 Apr 22;14(4):e0214440. doi: 10.1371/journal.pone.0214440

Table 2. Steady-state parameters of 5/B/6 MBL mutants.

Enzyme Cefuroxime Hydrolysis
No 10-mera + 500 μM 10-mera
Km (mM) kcat (s-1) kcat/Km (mM-1·s-1) Km (mM) kcat (s-1) kcat/Km (mM-1·s-1)
Wild type 1.2 ± 0.1 164 ± 8 133± 5 0.2 ± 0.1 36 ± 2 176 ± 30
K78Q 1.5 ± 0.1 117 ± 16 80 ± 7 1.2 ± 0.1 104± 6 89 ± 5
K104Q/K107Q 1.2 ± 0.1 154 ± 6 131 ± 7 1.2 ± 0.1 157 ± 11 126 ± 9
K78Q/K104Q/K107Q 1.3 ± 0.1 109 ± 10 82 ± 5 1.2 ± 0.1 109 ± 8 89 ± 9

aKinetic values and associated errors represent the average of at least five replicates and their standard deviation.