Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2idxA 2idxB 2idxC 4uxeA 2idxA 100 85 88 0 2idxB 85 100 98 37 2idxC 88 98 100 38 4uxeA 0 0 0 100 FOLD SIMILARITY (Z-SCORE) 2idxA 2idxB 2idxC 4uxeA 2idxA 30.8 26 25.3 0 2idxB 26 32.7 28 0 2idxC 25.3 28 32.9 0 4uxeA 0 0 0 31.4