TABLE 7.

Aromatic amino acids: residue volumes, mean percent buried in proteins, hydrophobicity, absorbance and fluorescence properties

				Absorbance§		Fluorescence∥
Amino acid	Volume (Å3)*	Mean % buried†	Hydrophobicity (kcal mol−1)‡	λmax	ɛmax	λmax	ϕF
Tryptophan	232	87	3.1	280	5600	353	0.13
Tyrosine	197	77	1.3	275	1400	304	0.14
Phenylalanine	194	88	2.4	258	200	282	0.02

^*From Harpaz et al. (1994).

^†The mean fraction buried in a sample of 61 proteins, from Lesser and Rose (1990).

^‡From Fauchere and Pliska (1983).

^§From Schmid (1997).

^∥From Lakowicz (1999).