Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1tu3F 2pkeA 5yetA 5yetB 1tu3F 100 0 0 3 2pkeA 0 100 70 69 5yetA 0 69 100 99 5yetB 0 79 99 100 FOLD SIMILARITY (Z-SCORE) 1tu3F 2pkeA 5yetA 5yetB 1tu3F 7.5 0 0 0 2pkeA 0 40.5 0 0 5yetA 0 0 60.6 57.3 5yetB 0 0 57.3 60.6