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. 2009 Jun 11;284(32):21132–21138. doi: 10.1074/jbc.M109.010215

TABLE 2.

Summary of kinetic constants

Substrate Km kcat kcat/Km αa
μm s1 s1m1
Lipid ϕ analog 2.6 ± 1.4 87 ± 8.4 3.4 × 107 0.60 ± 0.46
CDP-glycerol 180 ± 77 4.8 × 105

a α is a constant in Equation 2 that modifies the dissociation constant for substrate binding to a transitory enzyme complex (28).