Main Reaction: O-acetylhomoserine + cysteine >> acetate + cystathionine

Reference: PubMed ID: 22419079
Authors: Ljungdahl PO, Daignan-Fornier B
Title: Regulation of amino acid, nucleotide, and phosphate metabolism in Saccharomyces cerevisiae.
Published: 2012 Mar

O-acetylhomoserine + cysteine --> acetate + cystathionine