Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2hcmA 5nxhA 2hcmA 100 0 5nxhA 35 100 FOLD SIMILARITY (Z-SCORE) 2hcmA 5nxhA 2hcmA 34.6 0 5nxhA 0 26.7