Chain A ( L131 Y132 F133 R134 P135 T136 I137 Q138 R139 G140 S712 L713 S714 H715 N716 G717 K718 D719 L720 F721 K722 P723 F747 P755 E757 S758 V759 H761 K790 K881 D882 S883 S884 L885 G886 L887 S888 K889 E890 D891 K892 A893 F894 L895 W896 E897 P910 K911 I912 L913 A914 S915 A916 P917 N918 W919 E944 D947 S948 K949 F950 Q980 K983 Y984 D1020 F1023 Q1326 T1327 N1328 F1330 L1331 N1332 L1333 L1334 S1335 L1336 M1337 I1338 P1339 S1340 G1341 L1342 L1345 T1346 S1347 I1348 Q1349 D1350 L1351 K1352 Y1353 V1354 R1355 D1356 )