TRP 5 * TYR 7 * TRP 16 * SER 29 * PRO 30 * ASN 62 * HIS 64 * ALA 65 * PHE 66 * ASN 67 * GLN 92 * PHE 93 * HIS 94 * PHE 95 * HIS 96 * GLU 106 * HIS 107 * GLU 117 * LEU 118 * HIS 119 * LEU 120 * VAL 121 * PHE 131 * LEU 141 * VAL 143 * LEU 144 * SER 197 * LEU 198 * PRO 199 * THR 200 * PRO 201 * PRO 202 * LEU 203 * VAL 207 * TRP 209 * ASN 244 * TRP 245 * ARG 246 * ZN 503 *