Chain A ( Q78 K79 F80 F81 G82 L83 P84 Q85 D90 Q91 N92 T93 E95 T96 K99 P100 Q393 G394 Y395 H403 L411 E412 H413 S414 Q415 D416 P417 G418 A419 L420 M421 A422 P423 I424 Y425 T426 Y427 T428 K429 R432 L433 S434 Q435 D436 D437 G462 P463 V464 T465 P466 E467 I468 R482 E484 F486 R491 F492 I493 W494 R495 T496 K502 P503 M504 G505 P506 L507 L508 V509 A510 T511 F512 W513 P514 E515 S546 )