Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 4hkcA 4hkcB 5d2dA 5d2dC 4hkcA 100 0 100 0 4hkcB 0 0 0 0 5d2dA 0 0 0 0 5d2dC 0 0 0 0 FOLD SIMILARITY (Z-SCORE) 4hkcA 4hkcB 5d2dA 5d2dC 4hkcA 38.9 0 34.8 0 4hkcB 0 0 0 0 5d2dA 0 0 0 0 5d2dC 0 0 0 0