Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 2b1xA 2b1xF 3gzxA 3gzxB 2b1xA 100 58 88 67 2b1xF 86 100 79 68 3gzxA 88 70 100 66 3gzxB 72 68 71 100 FOLD SIMILARITY (Z-SCORE) 2b1xA 2b1xF 3gzxA 3gzxB 2b1xA 68.4 0 44.6 0 2b1xF 0 31.7 0 24.8 3gzxA 44.6 0 68.1 0 3gzxB 0 24.8 0 34.9