Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2gmyA 2gmyB 3rqiA 2gmyA 100 99 29 2gmyB 99 100 29 3rqiA 68 68 100 FOLD SIMILARITY (Z-SCORE) 2gmyA 2gmyB 3rqiA 2gmyA 30.1 28.7 0 2gmyB 28.7 30.2 0 3rqiA 0 0.4 30.5