title: An improved apotryptophanase assay for pyridoxal phosphate.
mesh_terms: D000447:Aldehydes; D000645:Ammonium Sulfate; D000814:Aniline Compounds; D011232:Chemical Precipitation; D003124:Colorimetry; D004926:Escherichia coli / Q000201:enzymology*; D006836:Hydro-Lyases / Q000302:isolation & purification; D008722:Methods; D008744:Methylamines; D008832:Microchemistry; D011732:Pyridoxal Phosphate / Q000032:analysis*; D013997:Time Factors; D014364:Tryptophan
chemical_list: D000447:Aldehydes; D000814:Aniline Compounds; D008744:Methylamines; D011732:Pyridoxal Phosphate; D014364:Tryptophan; D006836:Hydro-Lyases; D000645:Ammonium Sulfate