Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1pn2A 1pn2B 2v0xA 2v0xB 5d5yA 6b87A 1pn2A 100 98 0 0 0 0 1pn2B 98 100 0 0 0 0 2v0xA 0 0 100 98 0 31 2v0xB 0 0 98 100 0 31 5d5yA 0 0 0 0 100 4 6b87A 33 39 30 30 0 100 FOLD SIMILARITY (Z-SCORE) 1pn2A 1pn2B 2v0xA 2v0xB 5d5yA 6b87A 1pn2A 50.2 42.5 0 0 0 0 1pn2B 42.5 48.7 0 0 0 0 2v0xA 0 0 27.4 22.4 0 8.1 2v0xB 0 0 22.4 27.2 0 8.3 5d5yA 0 0 1.5 1.9 6.8 3.9 6b87A 0 0 6.7 6.5 3.4 15.4