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. Author manuscript; available in PMC: 2009 Jul 9.
Published in final edited form as: Chem Biol. 2007 Aug;14(8):944–954. doi: 10.1016/j.chembiol.2007.07.013

Table 2.

Steady-State Kinetic Parameters for 10-Deoxymethynolide Production by PikAIII(ΔDock) and PikAIV(ΔDock)

Modules kcat (min−1) KM (mM) kcat/KM (min−1·mM−1) Relative kcat Relative kcat/KM
PikAIII + PikAIV 2.0 ± 0.02 0.31 ± 0.08 6.5 ± 1.7 1 1
PikAIII(ΔDock) + PikAIV 0.044 ± 0.003 0.095 ± 0.02 0.46 ± 0.10 0.02 0.07
PikAIII + PikAIV(ΔDock) 0.053 ± 0.002 0.064 ± 0.01 0.83 ± 0.13 0.03 0.13
PikAIII(ΔDock)+ PikAIV(ΔDock) 0.051 ± 0.004 0.093 ± 0.03 0.55 ± 0.18 0.03 0.08
PikAIII + Pik Thioesterase 0.12 ± 0.01 0.22 ± 0.06 0.55± 0.21 0.06 0.08
PikAIII(ΔDock) + Pik Thioesterase 0.16 ± 0.002 0.08 ± 0.003 2 ± 0.8 0.08 0.3