Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1rsgA 2h4pA 2h4pB 1rsgA 100 61 0 2h4pA 62 100 0 2h4pB 0 0 100 FOLD SIMILARITY (Z-SCORE) 1rsgA 2h4pA 2h4pB 1rsgA 64.5 0 0 2h4pA 0 58.5 0 2h4pB 0 0 5.4