High-affinity binding of peptide agonists to the human B1 bradykinin receptor depends on interaction between the peptide N-terminal L-lysine and the fourth extracellular domain of the receptor
The aim of this study was to identify the location of the N terminus of peptide agonist ligands when bound to the human B1 bradykinin (BK) receptor. To reach this aim, we exploited the fact that high-affinity binding of kinin peptides to the human B1 receptor subtype requires a peptide N-terminal L- Lys, whereas high-affinity binding to the B2 receptor subtype does not require this residue. This w