PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 32091873-5 2020 This study highlights the first example of exchanging L-Met terminal carboxylate/amine recognition elements within the hMAT2A active-site to enable non-native bioorthgonal substrate utilization. carboxylate 69-80 methionine adenosyltransferase 2A Homo sapiens 119-125