6hlp

Publication Abstract from PubMed

Neurokinins (or tachykinins) are peptides that modulate a wide variety of human physiology through the neurokinin G protein-coupled receptor family, implicated in a diverse array of pathological processes. Here we report high-resolution crystal structures of the human NK1 receptor (NK1R) bound to two small-molecule antagonist therapeutics - aprepitant and netupitant and the progenitor antagonist CP-99,994. The structures reveal the detailed interactions between clinically approved antagonists and NK1R, which induce a distinct receptor conformation resulting in an interhelical hydrogen-bond network that cross-links the extracellular ends of helices V and VI. Furthermore, the high-resolution details of NK1R bound to netupitant establish a structural rationale for the lack of basal activity in NK1R. Taken together, these co-structures provide a comprehensive structural basis of NK1R antagonism and will facilitate the design of new therapeutics targeting the neurokinin receptor family.

Crystal structures of the human neurokinin 1 receptor in complex with clinically used antagonists.,Schoppe J, Ehrenmann J, Klenk C, Rucktooa P, Schutz M, Dore AS, Pluckthun A Nat Commun. 2019 Jan 3;10(1):17. doi: 10.1038/s41467-018-07939-8. PMID:30604743^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.