Chain A ( L1181 E1182 S1183 H1184 G1185 G1186 Q1187 L1188 L1258 E1259 G1260 V1261 R1262 V1263 I1264 T1280 C1281 A1282 D1283 P1284 A1285 Y1292 A1307 Y1322 S1323 C1324 Q1325 A1326 R1333 S1334 S1335 R1336 P1337 A1338 F1541 E1545 )