Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1dd1A 1dd1B 1dd1C 1di6A 3rfqA 3rfqC 4lhbA 4lhbB 4lhbC 1dd1A 100 98 99 35 62 57 59 53 0 1dd1B 98 100 97 26 58 53 34 24 0 1dd1C 99 97 100 51 62 60 57 33 0 1di6A 36 0 55 100 66 66 67 67 66 3rfqA 52 0 52 66 100 97 69 69 69 3rfqC 0 52 52 66 97 100 68 68 69 4lhbA 50 0 57 67 69 68 100 99 99 4lhbB 55 0 33 67 69 68 99 100 99 4lhbC 0 36 37 67 69 69 99 99 100 FOLD SIMILARITY (Z-SCORE) 1dd1A 1dd1B 1dd1C 1di6A 3rfqA 3rfqC 4lhbA 4lhbB 4lhbC 1dd1A 40.5 35.7 34.8 0 0 0 0 0 0 1dd1B 35.7 40.1 36.5 0 0 0 0 0 0 1dd1C 34.8 36.5 39.8 0 0 0 0 0 0 1di6A 0 0 0 38.5 21.3 20.8 18.8 18.8 18.7 3rfqA 0 0 0 21.3 36.1 33.7 23.4 23.4 23.3 3rfqC 0 0 0 20.8 33.7 36.1 23 23 22.9 4lhbA 0 0 0 18.8 23.4 23 35.3 33.1 33 4lhbB 0 0 0 18.8 23.4 23 33.1 35.1 32.9 4lhbC 0 0 0 18.7 23.3 22.9 33 32.9 35.3