ASN 51 * ASN 52 * LYS 53 * PHE 55 * GLY 60 * MET 61 * THR 62 * SER 63 * ARG 64 * SER 65 * GLY 66 * THR 67 * ASP 70 * LEU 118 * LEU 119 * SER 120 * HIS 121 * GLY 122 * GLU 123 * GLU 124 * GLY 125 * ILE 126 * ILE 127 * PHE 128 * ILE 160 * GLN 161 * ALA 162 * CYS 163 * ARG 164 * GLY 165 * THR 166 * GLU 167 * LEU 168 * SER 198 * THR 199 * PRO 201 * GLY 202 * TYR 203 * TYR 204 * SER 205 * TRP 206 * ARG 207 * ASN 208 * SER 209 * GLY 212 * SER 213 * TRP 214 * PHE 215 * ILE 216 * PHE 256 * GLN 261 *