Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2r7kA 2r85A 3cbgA 3cswA 3ht4A 3ht4C 2r7kA 100 87 54 42 40 83 2r85A 87 100 37 44 46 46 3cbgA 58 39 100 52 81 70 3cswA 39 48 0 100 59 57 3ht4A 42 49 86 57 100 99 3ht4C 46 43 72 50 99 100 FOLD SIMILARITY (Z-SCORE) 2r7kA 2r85A 3cbgA 3cswA 3ht4A 3ht4C 2r7kA 60.8 40.2 2 0 0 0 2r85A 40.2 53.2 2.1 0 0 0 3cbgA 2 1.7 42.9 0 0 2.6 3cswA 0 0 0 48.1 0 0.4 3ht4A 0 0 0 0 72.3 65.7 3ht4C 0 0 2.4 0.4 65.7 73.3