DBBS Faculty Information Maurine E. Linder, Ph.D. Associate Professor Department of Cell Biology and Physiology Molecular Cell Biology Program Neurosciences Program Biochemistry Program Research in my laboratory explores the biology and enzymology of protein palmitoylation in signal transduction pathways. Numerous signaling proteins, including heterotrimeric G proteins, Ras proteins, and nonreceptor tyrosine kinases, reside on the cytoplasmic face of the plasma membrane where they are poised to receive signals from cell surface receptors. Association of these molecules with membranes and their functional activities rely on the covalent attachment of lipids, including reversible acylation with palmitate.
Current research is focused on the following questions.
Using biochemical and genetic approaches, we seek to define the molecular basis of a palmitoyltransferase activity present in plasma membranes. The pheromone response pathway in yeast is used as a model to study the physiological significance of palmitoylation of G protein subunits. A second line of investigation centers on palmitoylated proteins in the nerve terminal. G protein, signal transduction, palmitoylation, membrane proteins, exocytosis Manahan CL, Patnana M, Blumer KJ, et al. Lipid-dependent targeting of proteins to rafts.