Chain A ( P183 P184 S185 P186 S187 G188 Q189 P190 E191 E192 P193 G194 M195 V196 R197 L198 V199 C200 I206 A207 V208 A209 Y210 T211 Q212 F213 L214 V215 R233 L234 D235 W236 P237 I238 E239 R240 G264 P289 E291 H305 T434 K435 N450 N451 L480 A481 L482 E483 S484 A485 D486 G487 H488 G489 G490 C491 S492 A493 G494 N495 D496 I497 Y500 K512 V513 V514 P515 S516 A517 S518 Q519 L520 S536 G539 S540 P541 T542 T543 A544 F545 T546 L565 T566 G567 Q568 A569 N570 S572 L573 A574 Q601 )