Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2p3nA 2qgyA 3kwsA 3ramA 2p3nA 100 70 89 64 2qgyA 90 100 82 74 3kwsA 87 87 100 71 3ramA 36 28 65 100 FOLD SIMILARITY (Z-SCORE) 2p3nA 2qgyA 3kwsA 3ramA 2p3nA 50.3 0.3 0 0.1 2qgyA 0 71.2 5.7 0 3kwsA 0 3.9 50.4 0 3ramA 1.2 0 0 69.7