Fig. 2

(a) D1A Receptor-Interaction (2D View) Benazepril interacts with Asp187 and Trp321 via hydrogen bonding and differs in its binding mode compared with C. Hydrophobic interactions contribute to its stabilization at the active site of the receptor. (b) Receptor interaction (3D view) The binding site of benazepril within the D1A receptor is depicted, highlighting the key residues involved in its interaction. Compared with that of C, the binding pocket orientation emphasizes its unique conformation.