Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1l8dA 1l8dB 2bx2L 5goxA 1l8dA 100 99 0 37 1l8dB 99 100 0 37 2bx2L 0 36 100 50 5goxA 25 35 0 100 FOLD SIMILARITY (Z-SCORE) 1l8dA 1l8dB 2bx2L 5goxA 1l8dA 16.2 14.8 0 7.6 1l8dB 14.8 16.1 0 7.4 2bx2L 0 1.1 61.8 0 5goxA 4.1 5.4 0 19.6