A rapid method for preparing crystalline beta 2 subunit of tryptophan synthetase of Escherichia coli in high yield.

Ammonium Sulfate Apoenzymes Binding Sites Crystallization Electrophoresis, Disc Escherichia coli/enzymology Evaluation Studies as Topic Kinetics Macromolecular Substances Methods Protein Binding Pyridoxal Phosphate Solubility Spectrophotometry Spectrophotometry, Ultraviolet Time Factors Tryptophan Synthase/isolation & purification,metabolism

Apoenzymes Macromolecular Substances Pyridoxal Phosphate Tryptophan Synthase Ammonium Sulfate