Chain A ( R526 F528 F535 C539 F597 F598 S601 H602 V604 S605 N606 P607 C610 L611 F612 E613 Y614 A615 G616 K617 C621 L622 Q623 I624 N625 P626 S628 H634 L635 F638 R639 F640 I641 G642 R643 F644 I645 A646 M647 A648 L649 F650 H651 G652 K653 F654 I655 D656 T657 G658 F659 S660 L661 P662 F663 Y664 K665 R666 I667 L668 N669 K670 P671 V672 G673 L674 K675 D676 L677 E678 S679 I680 D681 P682 Y685 N686 I738 R739 M740 A742 E743 W744 R745 L746 S747 R748 V750 E751 E752 Q753 T754 Q755 A756 F757 F758 G760 F761 I764 L765 Q767 Y769 L770 Q771 Y772 F773 D774 A775 K776 E777 L778 E779 V780 L781 L782 C783 G784 M785 Q786 E787 I788 W793 F812 F815 V816 I819 N821 E822 K823 R824 M825 R826 L827 L828 Q829 F830 V831 T832 G833 T834 C835 R836 L837 P838 V839 L845 M846 G847 S848 N849 G850 F854 S868 H869 T870 C871 F872 N873 R874 L875 I894 E895 T897 )