Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1k3rA 2w6aA 5cffA 5cffC 5vr2A 1k3rA 100 0 0 0 0 2w6aA 0 100 25 23 21 5cffA 14 12 100 23 14 5cffC 7 23 23 100 14 5vr2A 4 21 4 4 100 FOLD SIMILARITY (Z-SCORE) 1k3rA 2w6aA 5cffA 5cffC 5vr2A 1k3rA 44.3 0 0 0 0 2w6aA 0 7.7 4.5 4.5 5 5cffA 0 4.5 8.4 7.4 4.2 5cffC 0 4.5 7.4 8.4 4.2 5vr2A 0 5 4.1 4 7