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Docked poses of NAP and NAQ in the mu opioid receptor. A) NAP in MOR binding Site 1. B) NAP in MOR binding Site 2. C) NAQ in MOR binding Site 1. D) NAQ in MOR binding Site 2. NAP and NAQ atoms: carbon (orange); amino acid residue atoms carbon: (cyan), oxygen (red), nitrogen (blue), sulfur (yellow).
