Chain A ( V631 I634 F637 F641 L678 F679 A681 I682 F683 G684 V706 L707 Y708 G709 V710 Y711 N712 V713 T714 M715 V716 I717 V718 L719 L720 N721 M722 L723 I724 ),  Chain C ( L627 V631 I634 F637 F641 L678 F679 A681 I682 F683 G684 Y708 Y711 N712 V713 T714 M715 V716 I717 V718 L719 L720 N721 M722 L723 I724 ),  Chain B ( L627 A681 I682 F683 G684 G709 V710 N712 V713 T714 V716 I717 V718 L719 L720 N721 M722 L723 I724 ),  Chain D ( L627 V631 I634 F635 F637 M638 F641 F648 L678 F679 A681 I682 F683 G684 L707 Y708 G709 V710 Y711 N712 V713 T714 M715 V716 I717 V718 L719 L720 N721 M722 L723 I724 )