Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 1a3wA 4kctA 1a3wA 100 92 4kctA 92 100 FOLD SIMILARITY (Z-SCORE) 1a3wA 4kctA 1a3wA 75.9 62.9 4kctA 62.9 76.8