title: Blocked alpha-amino groups in peptides due to diketopiperazine formation.
mesh_terms: D000429:Alcohol Oxidoreductases; D000595:Amino Acid Sequence; D000596:Amino Acids / Q000032:analysis; D002250:Carbon Radioisotopes; D002850:Chromatography, Gel; D002854:Chromatography, Paper; D002855:Chromatography, Thin Layer; D002918:Chymotrypsin; D003619:Dansyl Compounds; D004590:Electrophoresis, Paper; D006863:Hydrogen-Ion Concentration; D007461:Iodoacetates; D007659:Ketones; D010446:Peptide Fragments / Q000032:analysis; D010455:Peptides; D010879:Piperazines; D012441:Saccharomyces cerevisiae / Q000201:enzymology; D014357:Trypsin
chemical_list: D000596:Amino Acids; D002250:Carbon Radioisotopes; D003619:Dansyl Compounds; D007461:Iodoacetates; D007659:Ketones; D010446:Peptide Fragments; D010455:Peptides; D010879:Piperazines; D000429:Alcohol Oxidoreductases; D002918:Chymotrypsin; D014357:Trypsin