title: End group determination.
mesh_terms: D000107:Acetylation; D000215:Acylation; D000577:Amides; D000595:Amino Acid Sequence; D000596:Amino Acids / Q000032:analysis; D000626:Aminopeptidases; D002268:Carboxypeptidases; D002852:Chromatography, Ion Exchange; D002854:Chromatography, Paper; D002855:Chromatography, Thin Layer; D003485:Cyanates; D003619:Dansyl Compounds; D004590:Electrophoresis, Paper; D005459:Fluorides; D006827:Hydantoins; D006834:Hydrazines; D007930:Leucine; D008722:Methods; D009578:Nitrobenzenes; D010455:Peptides / Q000032:analysis; D011506:Proteins / Q000032:analysis*; D014316:Tritium
chemical_list: D000577:Amides; D000596:Amino Acids; D003485:Cyanates; D003619:Dansyl Compounds; D006827:Hydantoins; D006834:Hydrazines; D009578:Nitrobenzenes; D010455:Peptides; D011506:Proteins; D014316:Tritium; D002268:Carboxypeptidases; D000626:Aminopeptidases; D007930:Leucine; D005459:Fluorides