Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1zvbA 1zvbB 2zfcA 4ynhA 5jieA 1zvbA 100 6 15 0 9 1zvbB 6 100 15 0 10 2zfcA 15 6 100 3 12 4ynhA 0 0 5 100 0 5jieA 0 0 8 0 100 FOLD SIMILARITY (Z-SCORE) 1zvbA 1zvbB 2zfcA 4ynhA 5jieA 1zvbA 5.5 4.7 4.3 0 1.9 1zvbB 4.5 5.4 4.1 0 1.9 2zfcA 4.3 4.2 6.5 1 1.9 4ynhA 0 0 1.5 10.6 0 5jieA 2.7 2.5 2.5 0 7.7