Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1c4qB 3kyeA 3kyeB 1c4qB 100 0 13 3kyeA 4 100 99 3kyeB 9 99 100 FOLD SIMILARITY (Z-SCORE) 1c4qB 3kyeA 3kyeB 1c4qB 18.4 0 0 3kyeA 0 28.2 22.9 3kyeB 0 22.9 28.4