Chain A ( L49 K52 L53 E56 E60 K64 K68 L69 I70 N71 A72 L73 R74 R75 C76 F77 F78 W79 R80 F81 M82 F83 Y84 G85 I86 F87 L88 L145 I148 G149 M150 Q151 M152 R153 I154 M156 N186 N187 L188 K190 F191 D192 E193 G194 L195 A196 L197 A198 H199 F200 V201 W202 I203 Q353 F354 W356 A357 V358 Q359 T360 W361 Y362 D363 S364 L365 G366 A367 I368 N369 )