Insulin receptor substrate‐4 signaling in quiescent rat hepatocytes and in regenerating rat liver
Oscar Escribano, María Dolores Fernández‐Moreno, José Antonio Zueco, Cesar Menor, Jesus Fueyo, Rosa María Ropero, Inés Diaz‐Laviada, Irene D. Román, Luis G. Guijarro – 30 December 2003 – This study was designed to characterize insulin receptor substrate‐4 (IRS‐4) in isolated rat hepatocytes and to examine its role in liver regeneration. Subcellular fractionation revealed that 85% of IRS‐4 is located at isolated hepatocyte plasma membranes. The distribution of IRS‐4 among intracellular compartments remained unchanged in insulin‐stimulated cells.