RIKEN beamline II (BL44B2) is dedicated to macromolecular crystallography in white and monochromatic X-ray mode, and XAFS of diluted biological systems. The user run was started since April 1998, and lots of scientific applications including time-resolved (intermediate state) protein crystallography, protein crystallography at atomic resolution, phasing with anomalous scattering, membrane protein crystallography, and fluorescence XAFS of diluted metalloproteins have been emerging.