Chain A ( C35 Y36 R83 Q85 G92 S93 C94 W95 A96 H97 G98 S99 S101 A102 N138 D139 L140 I214 S215 C216 G217 I218 M224 I241 N242 H243 I244 I245 S246 V247 V262 R263 N264 S265 W266 W270 I295 )