Tryptophan
 
Abbreviations: Trp,W 
Properties
Class: Aromatic, hydrophobic 
pK(COO-):  2.38
pK(NH3+): 9.39
pK(R):
pI: 5.89
MW: 204 D
Occurence in Proteins: 1.1%

 
 

Characteristics
 
 high occurence in beta sheet