Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 1zkiA 1zkiB 3dkzA 1zkiA 100 99 63 1zkiB 99 100 63 3dkzA 63 63 100 FOLD SIMILARITY (Z-SCORE) 1zkiA 1zkiB 3dkzA 1zkiA 29 27 20.7 1zkiB 27 28.9 20.9 3dkzA 20.7 20.9 28.9