Table 2 Kinetic parameters of reactions catalyzed by McyI and its mutants

From: Structural insights into the catalytic mechanism of the microcystin tailoring enzyme McyI

McyI

WT

R249M

R249A

R166M

R166A

D173A

S86A

Y26F

KM (μM)

55.83 ± 7.29

ND

ND

162.90 ± 35.66

286.51 ± 16.20

ND

ND

72.86 ± 3.57

Vmax (μmol/min)

41.53 ± 1.86

ND

ND

34.01 ± 4.31

71.78 ± 3.22

ND

ND

52.66 ± 0.97