An effector binds to a single subunit of a multi-subunit allosteric protein.As a result,all subunits switch to the R state.This is an example of the __________ model of allostery.
A) concerted
B) homotropic
C) sequential
D) combined

Question

Quizplus · Accepted Answer

The concerted model of allostery proposes that all subunits of a multi-subunit allosteric protein are in either the T state or the R state, and the transition between the states is all-or-none. In this scenario, the binding of the effector to a single subunit causes all subunits to switch to the R state, which is consistent with the concerted model. The homotropic and sequential models involve different mechanisms for allosteric regulation, while the combined model incorporates aspects of both the concerted and sequential models.

An Effector Binds to a Single Subunit of a Multi-Subunit