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. Author manuscript; available in PMC: 2022 Oct 26.
Published in final edited form as: Top Catal. 2021 Nov 9;65(1-4):165–186. doi: 10.1007/s11244-021-01521-1

Fig. 5.

Fig. 5

Complete thermodynamic cycle of an allosteric enzyme, E. The top row represents the enzyme in the presence of only substrate, A. The bottom row represents the enzyme in the presence of the substrate and allosteric effector, X. Binding of X modifies the activity of E by either altering the binding affinity of E for A, as in K-type allostery, or influencing the rate-determining step, as in V-type allostery. Nomenclature from Ref. [83] is used here for consistency.