Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 4il6B 4il6D 4p3wA 4p3wG 4il6B 100 52 64 0 4il6D 66 100 0 0 4p3wA 63 0 100 0 4p3wG 0 0 0 0 FOLD SIMILARITY (Z-SCORE) 4il6B 4il6D 4p3wA 4p3wG 4il6B 50.3 1.8 0 0 4il6D 2.5 43.8 0 0 4p3wA 0 0 28.2 0 4p3wG 0 0 0 0