Roles of two protein phosphatases, Reg1-Glc7 and Sit4, and glycogen synthesis in regulation of SNF1 protein kinaseAmparo RuizDepartment of Genetics and Development, Columbia University, New York, NY 10032, USAProc Natl Acad Sci U S A 108:6349-54. 2011The SNF1 protein kinase of Saccharomyces cerevisiae is a member of the SNF1/AMP-activated protein kinase family, which is essential for metabolic con