SHEET 1 A 4 LYS A 17 PRO A 23 0 SHEET 2 A 4 VAL A 8 GLN A 14 -1 SHEET 3 A 4 VAL A 84 SER A 90 -1 SHEET 4 A 4 THR A 76 CYS A 79 -1 SHEET 1 B 3 ASN A 30 LYS A 36 0 SHEET 2 B 3 TYR A 42 ASP A 48 -1 SHEET 3 B 3 ARG A 53 GLU A 56 -1