Cresenzi CL, Lee J, Stipanuk MH. Cysteine Is the Metabolic Signal Responsible for Dietary Regulation of Hepatic Cysteine Dioxygenase and Glutamate Cysteine Ligase in Intact Rats. The Journal of Nutrition. 2003 Sep;133(9):2697–702. doi: 10.1093/jn/133.9.2697.