Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 1vr6A 3pgbA 1vr6A 100 53 3pgbA 54 100 FOLD SIMILARITY (Z-SCORE) 1vr6A 3pgbA 1vr6A 56.7 0.6 3pgbA 0.6 67.4