Puzzle 548 Pre-CASP blind Alignment Puzzle 1 Puzzle 548 had 6 cysteines that could form disulfide bridges. Initial insights into structure-activity relationships of avian defensins. Derache, C., Meudal, H., Aucagne, V., Mark, K.J., Cadene, M., Delmas, A.F., Lalmanach, A.C., Landon, C.,