Chain A ( Q60 L61 P62 A63 A64 M65 A66 D67 T68 F69 L70 E71 H72 L73 C74 L75 L76 A430 A431 V432 Y433 H434 R435 Q436 L437 F438 E439 E440 R442 R443 V460 E461 F464 C467 A468 R490 ),  Chain C ( A64 M65 A66 D67 T68 D324 L351 A352 Q353 K354 M355 M356 G358 R359 L362 D397 V432 Y433 H434 R435 Q436 L437 F438 E439 E440 L441 R442 R443 A444 A445 P446 L447 E461 ),  Chain B ( M65 D67 F323 Q353 K354 M355 M356 I357 G358 R359 N361 L362 L396 D397 V432 Y433 H434 R435 Q436 L437 F438 E439 E440 L441 R442 R443 A444 A445 P446 L447 E461 ),  Chain D ( Q59 Q60 L61 P62 A63 A64 M65 A66 D67 T68 F69 L70 E71 H72 L73 C74 L75 L76 A430 A431 V432 Y433 H434 R435 Q436 L437 F438 E439 E440 R442 R443 V460 E461 A463 F464 K465 C466 C467 A468 R490 )