PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 33894546-4 2021 The covalent imine bonds between originally hydrophilic PAH and hydrophobic BA are dynamic in that their formation and breakage is a function of solution pH, confirmed by 1H NMR and dynamic interfacial tension measurement. Barium 76-78 phenylalanine hydroxylase Homo sapiens 154-156