Researchers from the Joint Center for Structural Genomics (JCSG) formulated this screen with the goal of maximizing the coverage of the crystallization parameter space (buffers, salts, precipitants and pH) and eliminating redundancy. The buffers give final solution pHs between 4.2 and 10.5. Precipitants include volatile reagents such as ethanol, high molecular weight polymers such as PEG 8000 and salts such as Ammonium sulfate.
96 Formulations, 1.7 mL volumes in a 96 well block plate.