Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1scfA 2fpfA 4dkcA 4dkcB 1scfA 100 0 40 43 2fpfA 0 100 0 0 4dkcA 42 0 100 99 4dkcB 43 0 99 100 FOLD SIMILARITY (Z-SCORE) 1scfA 2fpfA 4dkcA 4dkcB 1scfA 25.2 0 7.8 7.8 2fpfA 0 16.1 0 0 4dkcA 7.8 0 33 31.2 4dkcB 7.8 0 31.2 32.9