The twisted proteins store elastic potential energy as it twists or untwists from its equilibrium state. The energy function for this system is shown in the figure where the energy is given in multiples ofkBT which is a unit of energy used by biochemists when working at the molecular level. (1.0kBT= 4.11×10−21 J).
Figure 6 shows a horizontal line at an energy level of 136kBT, which gives a total angular range of 2.095 radians. If the energy level of the ATP-synthase stalk is 100kBTinstead, between what angles is the stalk confined? Explain your reasoning.
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