Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2dbsA 2dbsB 4r8kA 4r8kB 2dbsA 100 96 19 19 2dbsB 96 100 18 24 4r8kA 29 18 100 97 4r8kB 34 24 97 100 FOLD SIMILARITY (Z-SCORE) 2dbsA 2dbsB 4r8kA 4r8kB 2dbsA 18.6 15.6 0 0 2dbsB 15.6 19.5 0 0 4r8kA 0 0 62.5 59.5 4r8kB 0 0 59.5 61.2