DescriptionN-Methyl-L-tryptophan.svg English: Structure of N-methyl-L-tryptophan. Deutsch: Struktur von N-methyl-L-tryptophan. Date 5 June 2020 Source...
node [left] {\textbf{L-Tryptophan}} -- ($(l2.north)-(0,.5)$) node [pos=.5,right,text width=5em,text centered] {\footnotesize Tryptophan--Hydroxylase}; \draw...