Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2izxA 2izxC 4cogA 4cogB 2izxA 100 0 0 0 2izxC 0 0 0 0 4cogA 0 0 0 0 4cogB 0 0 0 0 FOLD SIMILARITY (Z-SCORE) 2izxA 2izxC 4cogA 4cogB 2izxA 8.7 0 0 0 2izxC 0 0 0 0 4cogA 0 0 0 0 4cogB 0 0 0 0