HELIX 1 H GLU A 4 VAL A 10 1 7 HELIX 2 H ARG A 25 ALA A 49 1 25 HELIX 3 H PHE A 121 ARG A 127 1 7 HELIX 4 H LEU A 134 LEU A 140 1 7 HELIX 5 H LEU A 142 LYS A 156 1 15 SHEET 1 A 3 PHE A 54 SER A 58 0 SHEET 2 A 3 ARG A 64 HIS A 73 -1 SHEET 3 A 3 LEU A 76 ASP A 85 -1