Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 1qbqA 1qbqB 2h6fA 1qbqA 100 83 99 1qbqB 49 100 50 2h6fA 99 72 100 FOLD SIMILARITY (Z-SCORE) 1qbqA 1qbqB 2h6fA 1qbqA 40.1 0 36.4 1qbqB 0 75.2 0 2h6fA 36.4 1.2 40.3