Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 1dofA 2j91A 2j91D 1dofA 100 85 85 2j91A 85 100 99 2j91D 96 99 100 FOLD SIMILARITY (Z-SCORE) 1dofA 2j91A 2j91D 1dofA 58.4 38.9 38.3 2j91A 38.9 60.6 56.4 2j91D 27.9 56.4 59.5