title: Preliminary x-ray diffraction study of the wild-type and a mutationally-altered tryptophan synthetase alpha-subunit.
mesh_terms: D003460:Crystallization; D004926:Escherichia coli / Q000201:enzymology; D005971:Glutamates; D006836:Hydro-Lyases / Q000032:analysis*; D008715:Methionine; D008967:Molecular Biology; D009154:Mutation; D010455:Peptides; D014364:Tryptophan; D014961:X-Ray Diffraction
chemical_list: D005971:Glutamates; D010455:Peptides; D014364:Tryptophan; D008715:Methionine; D006836:Hydro-Lyases