Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 4m98A 4oopA 4oopC 4m98A 100 67 36 4oopA 65 100 99 4oopC 74 99 100 FOLD SIMILARITY (Z-SCORE) 4m98A 4oopA 4oopC 4m98A 41.3 0 0 4oopA 0 26.3 24.2 4oopC 0 24.2 26.2