Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1t0iA 1t0iB 6ckoA 1t0iA 100 95 0 1t0iB 95 100 0 6ckoA 3 3 100 FOLD SIMILARITY (Z-SCORE) 1t0iA 1t0iB 6ckoA 1t0iA 37.1 32.4 0 1t0iB 32.4 36 0 6ckoA 0 0 10.6