Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 1nogA 2idxA 2idxB 2idxC 1nogA 100 70 67 67 2idxA 70 100 85 88 2idxB 67 85 100 98 2idxC 67 88 98 100 FOLD SIMILARITY (Z-SCORE) 1nogA 2idxA 2idxB 2idxC 1nogA 31.8 22.7 21.3 21.4 2idxA 22.7 30.8 26 25.3 2idxB 21.3 26 32.7 28 2idxC 21.4 25.3 28 32.9