Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 4whnA 4whnC 6ehiA 6ehiB 4whnA 100 99 13 33 4whnC 99 100 30 33 6ehiA 14 35 100 99 6ehiB 39 37 99 100 FOLD SIMILARITY (Z-SCORE) 4whnA 4whnC 6ehiA 6ehiB 4whnA 31.1 28.3 0 0 4whnC 28.3 31.1 0 0 6ehiA 0 0 33.6 31.7 6ehiB 0 0 31.7 33.6