Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1bcpA 1bcpE 1pp9B 1pp9I 4bhuA 1bcpA 100 9 54 0 33 1bcpE 49 100 52 0 52 1pp9B 55 50 100 0 30 1pp9I 5 5 0 100 0 4bhuA 35 67 30 0 100 FOLD SIMILARITY (Z-SCORE) 1bcpA 1bcpE 1pp9B 1pp9I 4bhuA 1bcpA 42.2 0 0 0 0 1bcpE 0 24.9 0 0 0 1pp9B 0 0 67.2 0 0 1pp9I 0 0 0 7.4 0 4bhuA 0 0 0 0 28.3