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An Introduction to Medicinal Chemistry

An Introduction to Medicinal Chemistry

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58 Drug action at recep<strong>to</strong>rs<br />

neurotransmitter. The binding forces must be strong enough <strong>to</strong> bind the neurotransmitter<br />

effectively such that the recep<strong>to</strong>r changes shape. However, the binding forces<br />

cannot be <strong>to</strong>o strong, or else the neurotransmitter would not be able <strong>to</strong> leave and the<br />

recep<strong>to</strong>r would not be able <strong>to</strong> return <strong>to</strong> its original shape. Therefore, it is reasonable <strong>to</strong><br />

assume that

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