Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2ba2A 2ba2B 3vtqA 3vu6A 2ba2A 100 99 6 3 2ba2B 99 100 6 3 3vtqA 8 8 100 3 3vu6A 11 11 6 100 FOLD SIMILARITY (Z-SCORE) 2ba2A 2ba2B 3vtqA 3vu6A 2ba2A 8 7.2 3.6 3.9 2ba2B 7.2 8.1 3.6 3.9 3vtqA 3.6 3.5 5.7 4.9 3vu6A 3.9 3.9 5 5.9