Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2vqeJ 2vqeN 4lhpA 2vqeJ 100 0 38 2vqeN 5 100 3 4lhpA 53 0 100 FOLD SIMILARITY (Z-SCORE) 2vqeJ 2vqeN 4lhpA 2vqeJ 18.4 0 1.2 2vqeN 0 12.4 0 4lhpA 2.4 0 26.4