Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 1oscA 2zfhA 2zfhB 2zfhC 1oscA 100 98 99 100 2zfhA 98 100 99 98 2zfhB 99 99 100 99 2zfhC 100 98 99 100 FOLD SIMILARITY (Z-SCORE) 1oscA 2zfhA 2zfhB 2zfhC 1oscA 23.4 21.1 21.2 21.1 2zfhA 21.1 23.4 21.6 21.5 2zfhB 21.2 21.6 23.2 21.8 2zfhC 21.1 21.5 21.8 23.1