Chain A ( L15 D16 I17 W18 A19 V20 D21 S22 I24 I30 P31 V32 F34 L44 V46 P47 R48 E49 A50 T51 I52 S53 Y54 I55 K56 Q57 D76 M79 F80 A81 C82 V83 N84 Q85 T86 A87 V88 Y89 E90 E91 L92 E93 D94 E95 T96 R97 R98 L99 C100 D101 V102 R103 P104 F105 L106 P107 V108 L109 R114 C116 D117 P118 G119 E120 K121 L122 D123 S124 K125 I126 G127 V128 L129 I130 G131 K132 G133 L134 H135 E136 Q174 T175 R306 R668 R669 G671 Q672 F673 F675 W676 H677 R679 S680 E681 V682 H683 L695 Y698 C699 R700 S702 V703 G704 H705 M706 K707 V708 L709 S710 K711 Q712 V713 E714 A715 L716 N717 K718 L719 K720 T721 L722 N723 S724 L725 I726 G738 A741 M742 H743 C745 L746 K747 Q748 S749 A750 Y751 R752 E753 A754 L755 S756 D757 L758 Q759 P761 S769 E770 L771 L786 F804 K805 N806 G807 D808 D809 R811 A843 T844 G845 D846 R847 S848 G849 )