PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 22888853-5 2013 Particularly, the flexibility of the side chains of aromatic residues (Phe and Tyr) allows them to form rotamers with different orientations in the binding pocket, which plays a critical role for the poly-specificity of the drug-binding cavity of P-gp. Tyrosine 79-82 ATP binding cassette subfamily B member 1 Homo sapiens 247-251