Chain A ( W201 T203 K205 P206 L207 P208 E209 Y210 L211 K214 R277 E279 Q291 W292 V293 R294 H295 C296 L297 K298 N299 G300 D653 D654 D655 V656 L657 H658 L660 L661 R690 I691 F694 Y787 D788 P789 G790 L791 D841 M842 L843 I844 L845 Q846 I847 L848 R849 I850 M851 E852 S853 I854 W855 E856 T857 E858 S859 L860 D861 L862 C863 L864 L865 P866 Y867 G868 C869 I879 E880 I881 V882 A923 R927 Y930 T955 T957 N959 K1015 )