TABLE II: Chandra et al Trp sequence ASA ( ˚ A $^{2}$) Phe-sequence ASA ( ˚ A $^{2}$) Trp-28 0.12 Phe-3 17.82 Trp-62 120.57 Phe-34 64.02 Trp-63 48.01 Phe-38 15.33 Trp-108 10.59 Glu-7 82.44 Trp-111 12.69 Glu-35 34.16 Trp-123 55.5 21