Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1a92A 2c2vS 2f42A 2p38A 1a92A 100 0 11 0 2c2vS 0 100 15 0 2f42A 0 15 100 0 2p38A 0 0 0 100 FOLD SIMILARITY (Z-SCORE) 1a92A 2c2vS 2f42A 2p38A 1a92A 7.5 0 2.9 0 2c2vS 0 17.7 15 0 2f42A 0 15 19.6 0 2p38A 0 0 0 30.3