title: The amino acid sequence of beta galactosidase. I. Isolation and composition of tryptic peptides.
mesh_terms: D000478:Alkylation; D000595:Amino Acid Sequence; D000596:Amino Acids / Q000032:analysis*; D000626:Aminopeptidases; D001120:Arginine / Q000032:analysis; D002247:Carbon Isotopes; D002850:Chromatography, Gel; D004586:Electrophoresis; D004926:Escherichia coli / Q000201:enzymology; D005696:Galactosidases / Q000032:analysis*; D008239:Lysine / Q000032:analysis; D008970:Molecular Weight; D010455:Peptides / Q000032:analysis / Q000302:isolation & purification; D014357:Trypsin; D014364:Tryptophan / Q000032:analysis
chemical_list: D000596:Amino Acids; D002247:Carbon Isotopes; D010455:Peptides; D014364:Tryptophan; D001120:Arginine; D005696:Galactosidases; D000626:Aminopeptidases; D014357:Trypsin; D008239:Lysine