AUTHOR=Li Jianyong , Merkler David J. , Han Qian TITLE=Editorial: Aromatic amino acid metabolism–Volume II JOURNAL=Frontiers in Molecular Biosciences VOLUME=9 YEAR=2023 URL=https://www.frontiersin.org/journals/molecular-biosciences/articles/10.3389/fmolb.2022.1122151 DOI=10.3389/fmolb.2022.1122151 ISSN=2296-889X