Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1g3kA 3shpA 5ahuA 5ahuB 1g3kA 100 11 0 52 3shpA 11 100 0 0 5ahuA 2 0 100 0 5ahuB 44 0 2 100 FOLD SIMILARITY (Z-SCORE) 1g3kA 3shpA 5ahuA 5ahuB 1g3kA 37.3 0 0 0.1 3shpA 0 34.5 0 0 5ahuA 1.1 0 12.4 1.5 5ahuB 0.1 0 1.9 46.9