ergothioneine biosynthetic process obsolete ergothioneine biosynthesis from histidine via gamma-glutamyl-hercynylcysteine sulfoxide https://github.com/geneontology/go-ontology/issues/11163 https://github.com/geneontology/go-ontology/issues/32018 true biological_process The reason for obsoletion is that these terms represent a GO-CAM model. OBSOLETE. The pathway resulting in the formation of ergothioneine from histidine via a set of steps in which gamma-glutamyl-hercynylcysteine sulfoxide is formed as an intermediate. 2011-08-05T11:31:52Z Wikipedia:Ergothioneine GO:0052704 ergothioneine biosynthesis from histidine via N-alpha,N-alpha,N-alpha-trimethyl-L-histidine