There are three known mammalian tachykinin receptors termed NK1, NK2 and NK3.
All are members of the 7 transmembrane G-protein coupled receptor family and induce the activation of phospholipase C, producing inositol triphosphate (so called Gq-coupled).
Inhibitors of NK-1, known as NK-1 receptor antagonists, can be used as antiemetic agents, such as the drug aprepitant.
[1] The genes and receptor ligands are as follows:[2] (Hökfelt et al., 2001; Page, 2004; Pennefather et al., 2004; Maggi, 2000) This biochemistry article is a stub.
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