Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 2p1zA 2p1zB 5hklA 5hklB 2p1zA 100 94 82 80 2p1zB 94 100 87 86 5hklA 82 88 100 98 5hklB 80 86 98 100 FOLD SIMILARITY (Z-SCORE) 2p1zA 2p1zB 5hklA 5hklB 2p1zA 34.9 30.4 29.3 27.8 2p1zB 30.4 35.8 29.5 28.4 5hklA 29.3 29.5 35.4 30.9 5hklB 27.8 28.4 30.9 37.7