tryptophan tryptophan n trp W Tryptophan is an aromatic, hydrophobic and neutral amino acid. It is found buried in protein structures. It is one of the essential amino acids. FEB-01-1995 course.cml DEC-04-1996 pps.cml#PERS2 http://ibc.wustl.edu:80/klotho/html/L-tryptophan.html http://atlas.nlm.nih.gov:5700/htbin/entrezglosview?TRYPTOPHAN aminoacid.ent trp.pdb trp.mol The PPS Glossary (1995)