HELIX 1 H GLU A 5 SER A 16 1 12 HELIX 2 H LEU A 27 GLU A 32 1 6 HELIX 3 H GLY A 39 ARG A 55 1 17 HELIX 4 H GLN A 63 A 74 1 12 SHEET 1 A 2 ASN A 20 LEU A 21 0 SHEET 2 A 2 HIS A 60 VAL A 61 1