title: Formaldehyde-induced cross-linkages in the   subunit of the Escherichia coli tryptophan synthetase.
mesh_terms: D000595:Amino Acid Sequence; D000596:Amino Acids / Q000032:analysis; D001216:Asparagine; D001665:Binding Sites; D002247:Carbon Isotopes; D055598:Chemical Phenomena; D002621:Chemistry; D002850:Chromatography, Gel; D002854:Chromatography, Paper; D002918:Chymotrypsin; D004586:Electrophoresis; D004589:Electrophoresis, Disc; D004926:Escherichia coli / Q000201:enzymology*; D005557:Formaldehyde; D005973:Glutamine; D005994:Glycerophosphates; D006836:Hydro-Lyases / Q000032:analysis; D007211:Indoles; D007700:Kinetics; D008239:Lysine; D008970:Molecular Weight; D010209:Paper; D010434:Pepsin A; D010455:Peptides / Q000032:analysis / Q000302:isolation & purification; D012694:Serine; D014357:Trypsin; D014364:Tryptophan
chemical_list: D000596:Amino Acids; D002247:Carbon Isotopes; D005994:Glycerophosphates; D007211:Indoles; D010455:Peptides; D005973:Glutamine; D005557:Formaldehyde; D012694:Serine; D001216:Asparagine; D014364:Tryptophan; D002918:Chymotrypsin; D014357:Trypsin; D010434:Pepsin A; D006836:Hydro-Lyases; D008239:Lysine