Genomic and functional characterization of the oas gene family encoding O-acetylserine (thiol) lyases, enzymes catalyzing the final step in cysteine biosynthesis in Arabidopsis thaliana. - Jost,R..; Berkowitz,O..; Wirtz,M..; Hopkins,L..; Hawkesford,M..J..; Hell,R.. (Gene, 2000)