Structural asymmetry and half-site reactivity in the T to R allosteric transition of the insulin hexamer.

Abstract excerpt

The zinc-insulin hexamer, the storage form of insulin in the pancreas, is an allosteric protein capable of undergoing transitions between three distinct conformational states, designated T6, T3R3, and R6, on the basis of their ligand binding properties, allosteric behavior, and pseudo point symmetries [Kaarsholm, N. C., Ko, H.-C., & Dunn, M. F. (1989) Biochemistry 28, 4427-4435]. The transition from the T-state...

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