Receptors tachykinin

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receptors, tachykinin

cell surface proteins that bind tachykinins with high affinity and trigger intracellular changes influencing the behaviour of cells. Three classes of tachykinin receptors have been characterised, the nk-1, nk-2, and nk-3, which prefer, respectively, substance p, neurokinin a (substance k, neurokinin alpha, neuromedin l), and neurokinin b (neurokinin beta, neuromedin k).