Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 4z9vA 4z9vB 5fydA 4z9vA 100 99 79 4z9vB 99 100 100 5fydA 22 46 100 FOLD SIMILARITY (Z-SCORE) 4z9vA 4z9vB 5fydA 4z9vA 27.1 25.5 0.8 4z9vB 25.5 27.1 0 5fydA 0 0 47.5