Читать книгу Neurobiology For Dummies - Frank Amthor - Страница 65

Membrane ion channels and receptors are typically composed of several proteins called subunits that, when assembled in the membrane, form a receptor or ion channel. At least 1,000 different receptor types exist in the olfactory (smell) system alone, each with a different combination of protein subunits with varying structures. The majority of ion channels and receptors have from four to six protein subunits.