HELIX 1 H THR A 4 CYS A 16 1 13 HELIX 2 H SER A 37 ALA A 50 1 14 HELIX 3 H LEU A 57 ASN A 65 1 9 HELIX 4 H THR A 71 PHE A 75 1 5 HELIX 5 H LEU A 77 GLY A 92 1 16