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. Author manuscript; available in PMC: 2015 Oct 1.
Published in final edited form as: Trends Biochem Sci. 2014 Sep 18;39(10):496–503. doi: 10.1016/j.tibs.2014.08.003

Fig 5. Zero-order ultrasensitivity in a reconstituted phosphorylase phosphorylation system.

Fig 5

The fitted curves are from the Goldbeter-Koshland equation based on the measured Km values, and the effective Hill coefficients were 1.35 (blue curve) and 2.35 (red curve). Adapted from [21].