HELIX 1 H ALA A 54 ALA A 61 1 8 HELIX 2 H PRO A 105 LEU A 112 1 8 HELIX 3 H THR A 123 ALA A 135 1 13 SHEET 1 A 3 VAL A 14 GLY A 18 0 SHEET 2 A 3 TYR A 21 VAL A 24 -1 SHEET 3 A 3 VAL A 27 PHE A 29 -1 SHEET 1 B 5 ALA A 42 SER A 43 0 SHEET 2 B 5 ILE A 33 PHE A 35 -1 SHEET 3 B 5 VAL A 140 LEU A 144 -1 SHEET 4 B 5 VAL A 91 GLY A 95 1 SHEET 5 B 5 GLY A 117 MET A 121 1