Seth L. Robia, an associate professor in the department of cell and molecular physiology of Loyola University, will be speaking on his research as part of the School of Biological Sciences Seminar series. His presentation, “Measuring the Motions of Membrane Transport Proteins,” will be given Thursday, September 3, at 4 p.m. in 210 Moulton Hall.


Membrane transport proteins are enzymes that use the energy of ATP to pump ions or small organic molecules across cell membranes. Disordered transporter function is associated with human diseases including heart failure and cancer. This presentation will focus on the conformational changes that pumps undergo as they transport cargo across the membrane. Fluorescence resonance energy transfer (FRET) and other spectroscopic methods are used to measure the dynamic motions of a calcium pump (SERCA) and a multidrug resistance protein (MRP1). The results provide insight into basic transport mechanisms and may provide new opportunities for drug discovery.