Chain F ( I31 T32 R40 W43 F103 V104 L105 G106 A107 I108 A109 L110 G111 V112 A113 T114 A115 A116 A117 V118 T119 A120 N210 T214 P215 A216 I217 R253 K254 G255 F256 Q272 W284 I285 V286 K287 R304 E305 D306 Q307 G308 W309 Y310 C311 V318 Y319 Y320 P321 N322 E323 K324 D325 C326 E327 F334 C335 D336 T337 A338 A339 G340 I341 K362 V363 S364 L375 S376 P377 Y425 Q426 Q455 F456 N457 V458 T41 I213 N351 G257 )