THR 19 * TRP 20 * LYS 21 * SER 22 * ASP 43 * CYS 44 * ALA 45 * HIS 46 * VAL 47 * TYR 48 * GLN 49 * LYS 77 * TRP 79 * CYS 80 * HIS 110 * TRP 111 * PHE 121 * PHE 122 * SER 159 * ASN 160 * GLN 183 * GLU 185 * TYR 209 * SER 210 * GLY 213 * SER 214 * ASP 216 * ARG 217 * PRO 218 * TYR 219 * ALA 220 * ILE 260 * TRP 295 * ARG 296 * VAL 297 * ALA 298 * ALA 299 * LEU 300 * LEU 301 * SER 302 * PHE 311 * NAP 316 *