HELIX 1 H VAL A 20 LEU A 27 1 8 HELIX 2 H ALA A 48 ALA A 51 1 4 SHEET 1 A 2 ASN A 2 VAL A 5 0 SHEET 2 A 2 LYS A 8 THR A 11 -1 SHEET 1 B 2 LEU A 18 ASN A 19 0 SHEET 2 B 2 THR A 53 VAL A 54 -1 SHEET 1 C 3 GLU A 42 VAL A 43 0 SHEET 2 C 3 VAL A 37 LEU A 39 -1 SHEET 3 C 3 VAL A 60 PHE A 62 -1