Three-dimensional structures of biological macromolecules are essentially important for structural biology. RIKEN has constructed two beamlines dedicated for structural biology at SPring-8. BL45XU is an undulator beamline designed for small-angle X-ray scattering of biological macromolecules and for X-ray crystallography on multi-wavelength anomalous dispersion technique. BL44B2 is a bending-magnet beamline with three purposes: time-resolved protein crystallography with white X-rays, conventional structure analysis of protein crystals with monochromatic X-rays, and X-ray Absorption Fine Structure analysis of biological macromolecules. Our unit is launched for user supports and development of new technologies for structural biology on the RIKEN beamlines. Many research and development programs have already been started, which will contribute to expand the research area of structural biology at the RIKEN Harima Institute.

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