Chain A ( I1084 G1085 R1086 G1087 F1089 V1092 H1094 A1108 V1109 K1110 F1124 E1127 G1128 M1131 L1140 V1155 L1157 Y1159 M1160 G1163 D1164 L1165 R1166 N1167 F1200 V1201 H1202 R1203 D1204 L1205 A1206 A1207 R1208 N1209 C1210 M1211 L1212 V1218 K1219 V1220 A1221 D1222 F1223 G1224 L1225 A1226 R1227 D1228 M1229 Y1230 D1231 Y1235 P1246 G1280 )