preferred_name: O-phospho-L-homoserine + L-cysteine = L,L-cystathionine + phosphate
preferred_name_lc: o-phospho-l-homoserine + l-cysteine = l,l-cystathionine + phosphate
label: O-phospho-L-homoserine + L-cysteine = L,L-cystathionine + phosphate
label_lc: o-phospho-l-homoserine + l-cysteine = l,l-cystathionine + phosphate