Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1c9kA 1c9kB 1c9kC 2z5wA 1c9kA 100 96 96 23 1c9kB 96 100 93 0 1c9kC 96 93 100 27 2z5wA 41 14 27 100 FOLD SIMILARITY (Z-SCORE) 1c9kA 1c9kB 1c9kC 2z5wA 1c9kA 34.4 30.7 29.2 0 1c9kB 30.7 35.4 29.1 0 1c9kC 29.2 29.1 33.4 0 2z5wA 0 0 0 30.4