Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1bg6A 1fp2A 3i71B 1bg6A 100 56 10 1fp2A 55 100 7 3i71B 6 7 100 FOLD SIMILARITY (Z-SCORE) 1bg6A 1fp2A 3i71B 1bg6A 63.2 3.1 0 1fp2A 3.1 52.3 1.9 3i71B 0 1.9 12.2