Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1vchA 1vchB 2aeeA 2aeeB 2bnlA 1vchA 100 99 59 58 0 1vchB 99 100 59 60 0 2aeeA 67 68 100 99 67 2aeeB 60 61 99 100 0 2bnlA 48 53 57 61 100 FOLD SIMILARITY (Z-SCORE) 1vchA 1vchB 2aeeA 2aeeB 2bnlA 1vchA 34.5 32.4 13.7 12.8 0 1vchB 32.4 34.8 13.4 12.4 0 2aeeA 13.5 13.2 39.3 35.6 0.7 2aeeB 12.6 12.2 35.6 39.3 0 2bnlA 0.9 0.3 0.4 0 28.7