Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1ia9A 1ia9B 4omzA 4omzB 1ia9A 100 98 31 21 1ia9B 98 100 3 3 4omzA 41 0 100 99 4omzB 36 41 99 100 FOLD SIMILARITY (Z-SCORE) 1ia9A 1ia9B 4omzA 4omzB 1ia9A 44.3 38.6 0 0 1ia9B 38.6 44.4 0 0 4omzA 0 0 20.5 18.5 4omzB 0 0 18.5 20.2