The
                    modern field of Structural Biology essentially originated
                    at Caltech in the 1940's with Linus Pauling. Pauling
                    pioneered the structure -based approach to the study of
                    biological systems that has formed the basis for most
                    subsequent advances in understanding the molecular
                    mechanisms of biological systems. The objective of the
                    present Structural Biology group at Caltech is to
                    continue in the tradition established by Pauling to use
                    the information obtained from high resolution structures
                    to understand the molecular basis of biological
                    processes. Current protein crystallographic efforts focus
                    upon cell surface proteins involved in the immune
                    response, nervous system and signal transduction
                    pathways, integral membrane proteins, metalloproteins,
                    and hyper- thermostable proteins. The Center for
                    Macromolecular Crystallography at Caltech includes modern
                    equipment for the collection and analysis of x-ray
                    diffraction data derived from crystals of macromolecules.
                    X-ray data collection hardware includes two x-ray
                    generators, and two phosphor imaging plate detectors.
                    Computational analysis is done using Silicon Graphics and
                    Digital Equipment alpha workstations. NMR facilities
                    include a 600 MHz NMR.