Chain A ( Q388 H389 G390 Q391 Q392 V393 G426 A427 Q494 G495 S496 F497 N498 A499 D500 K501 L502 A557 I558 I559 A560 T561 D562 P563 L564 N565 P566 K587 A588 Y589 P590 K591 F593 S594 G625 L626 M628 Q629 L630 L631 D632 C633 N634 F635 S636 R641 A666 V667 K668 F669 Y709 R712 H1023 T1024 N1025 L1026 L1027 I1028 I1029 L1030 F1031 S1032 M1033 L1035 M1036 T1043 S1044 K1045 E1046 D1047 I1048 E1049 Y1050 I1051 R1052 D1053 A1054 L1055 V1057 )