Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 2a5lA 2a5lB 3u1dA 3u1dB 2a5lA 100 99 58 60 2a5lB 99 100 52 57 3u1dA 57 57 100 97 3u1dB 58 55 97 100 FOLD SIMILARITY (Z-SCORE) 2a5lA 2a5lB 3u1dA 3u1dB 2a5lA 38.2 35.7 0 0.1 2a5lB 35.7 38.4 0 0 3u1dA 0 0 28.9 24.4 3u1dB 0 0 24.4 28.5