Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1pwbA 1pwbC 3swyA 4kmrA 4kmrB 1pwbA 100 99 0 82 86 1pwbC 99 100 0 62 43 3swyA 7 3 100 0 4 4kmrA 84 68 0 100 99 4kmrB 83 3 0 99 100 FOLD SIMILARITY (Z-SCORE) 1pwbA 1pwbC 3swyA 4kmrA 4kmrB 1pwbA 29.2 28.2 0 0.2 0.1 1pwbC 28.2 29.2 0 0 0 3swyA 0 0.1 6.6 0 0 4kmrA 0.4 0 0 47.9 41.1 4kmrB 0.3 0 0 41.1 47.8