There are two main types of adrenergic receptors: the Î± and Î² - adrenoceptors. noradrenaline shows slight selectivity for the Î± receptor, whereas isoprenaline shows selectivity for the Î² adrenoceptor. adrenaline shows no selectivity and binds equally well to both the Î± and Î²-forms of the adrenoceptors. draw the chemical structures for noradrenaline, isoprenaline, and adrenaline. suggest an explanation for these differences in selectivity relative to the binding site of each receptor.

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Biology

Addison Farley

25 June, 02:15

There are two main types of adrenergic receptors: the Î± and Î² - adrenoceptors. noradrenaline shows slight selectivity for the Î± receptor, whereas isoprenaline shows selectivity for the Î² adrenoceptor. adrenaline shows no selectivity and binds equally well to both the Î± and Î²-forms of the adrenoceptors. draw the chemical structures for noradrenaline, isoprenaline, and adrenaline. suggest an explanation for these differences in selectivity relative to the binding site of each receptor.

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Nolan Brewer · Answer 1

The different adrenal hormones show selectivity for different types of adrenergic receptors. This may be because the chemical structures of the adrenal hormones are such that binding is biochemically easier for the hormones at the receptors to which they show a selective affinity.