Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 4fasA 4fasD 4n4nC 4n4nD 4fasA 100 0 100 0 4fasD 0 100 0 100 4n4nC 100 0 100 0 4n4nD 0 100 0 100 FOLD SIMILARITY (Z-SCORE) 4fasA 4fasD 4n4nC 4n4nD 4fasA 58 0 55.7 0 4fasD 0 11.7 0 9.6 4n4nC 55.7 0 57.9 0 4n4nD 0 9.6 0 13.1