Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2yvaA 4gcvA 4gcvB 4mg4A 4mg4H 2yvaA 100 33 10 84 83 4gcvA 40 100 99 29 33 4gcvB 10 99 100 25 32 4mg4A 87 33 26 100 98 4mg4H 83 33 31 98 100 FOLD SIMILARITY (Z-SCORE) 2yvaA 4gcvA 4gcvB 4mg4A 4mg4H 2yvaA 38.6 0 0.2 2.2 2.3 4gcvA 0 23.8 21.7 0 0 4gcvB 0.2 21.7 23.9 0 0 4mg4A 2 0 0 48 43 4mg4H 0.5 0 0 43 46.8