Chain A ( I8 I9 V10 G11 A22 D23 T24 L25 Y26 L28 I30 R38 I40 C41 S42 G43 L44 R45 L46 K47 K48 N49 D52 L53 K56 Y57 V58 L59 V60 L61 A62 L64 K65 E66 K67 S74 H75 G76 M77 V78 L79 C80 G81 S82 Q86 I87 E88 L89 L90 A91 P92 V96 I102 S118 N124 F126 F127 A140 W147 L148 S149 I154 T155 C156 P157 L158 I163 S164 )