HELIX 1 H LEU A 21 VAL A 24 1 4 HELIX 2 H ARG A 42 SER A 49 1 8 HELIX 3 H VAL A 62 LYS A 74 1 13 HELIX 4 H SER A 107 TYR A 118 1 12 HELIX 5 H LEU A 153 GLU A 159 1 7 SHEET 1 A 7 ILE A 78 GLN A 82 0 SHEET 2 A 7 GLU A 53 ASP A 58 1 SHEET 3 A 7 LYS A 32 CYS A 35 1 SHEET 4 A 7 GLY A 97 SER A 100 1 SHEET 5 A 7 VAL A 126 LEU A 129 1 SHEET 6 A 7 LYS A 184 GLN A 193 -1 SHEET 7 A 7 ASN A 164 ASN A 174 -1