HELIX 1 H ARG 23 LEU 33 1 11 HELIX 2 H LYS 57 ALA 63 1 7 HELIX 3 H GLU 71 THR 82 1 12 HELIX 4 H ALA 86 VAL 90 1 5 SHEET 1 A 4 LYS 36 THR 38 0 SHEET 2 A 4 THR 12 THR 16 1 SHEET 3 A 4 TYR 47 VAL 50 1 SHEET 4 A 4 LEU 69 THR 70 1