A reversible chemical modification of the tryptophan residue.
D000596:Amino Acids; D000818:Animals; D002417:Cattle; D055598:Chemical Phenomena; D002621:Chemistry; D004602:Elements / Q000032:analysis; D005561:Formates; D006863:Hydrogen-Ion Concentration; D007259:Infrared Rays; D008722:Methods; D008956:Models, Chemical; D009113:Muramidase / Q000032:analysis; D010179:Pancreas / Q000032:analysis; D010455:Peptides; D011506:Proteins; D012260:Ribonucleases / Q000032:analysis; D013053:Spectrophotometry; D014364:Tryptophan / Q000032:analysis; D014466:Ultraviolet Rays
D000596:Amino Acids; D004602:Elements; D005561:Formates; D010455:Peptides; D011506:Proteins; D014364:Tryptophan; D012260:Ribonucleases; D009113:Muramidase