Chain A ( Q34 I35 I36 S37 G38 L39 M40 L41 S42 F43 F44 Y45 V46 P47 M51 A52 F53 T56 M60 W67 V69 R70 L71 H73 S74 F75 V77 S78 F81 T116 A117 F118 V119 G120 Y121 V122 L123 P124 D125 G126 M128 S129 G132 L161 E162 R163 F164 F165 S166 I167 H168 V169 I170 L171 P172 V173 F233 I234 S235 I236 F237 Q238 A239 D240 P241 D242 N243 S244 I245 H255 I256 I257 P258 E259 W260 Y261 K330 )