Chain A ( C35 Y36 R83 Q85 G92 S93 C94 W95 A96 H97 G98 S99 T100 S101 A102 M103 V122 I126 N138 D139 L140 P141 V142 W143 I214 S215 C216 G217 I241 H243 I244 I245 S246 V247 V262 R263 N264 S265 W266 )