Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1oscA 2ieqA 2ieqB 2ieqC 1oscA 100 0 0 0 2ieqA 31 100 98 99 2ieqB 38 98 100 99 2ieqC 40 99 99 100 FOLD SIMILARITY (Z-SCORE) 1oscA 2ieqA 2ieqB 2ieqC 1oscA 23.4 0 0 0 2ieqA 0 14.1 13.1 12.8 2ieqB 0 13.1 14.2 13.2 2ieqC 0 12.4 13.2 14