Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1wa3A 2e54A 2v82A 1wa3A 100 22 76 2e54A 37 100 42 2v82A 76 67 100 FOLD SIMILARITY (Z-SCORE) 1wa3A 2e54A 2v82A 1wa3A 42.5 0 28.9 2e54A 0 71.1 0 2v82A 28.9 0 43.4