FIGURE 5.

The β → α loop 4 of QsGH13 in comparison with other proteins. (A) Superposition of amino acid residues of QsGH13 with amino acid residues of other proteins in the β → α loop 4; the red box represents the conserved amino acid residue. (B) Sticks represent the β → α loop 4 of QsGH13. (C) The monomer structure comparison of QsGH13 (red), XgtA (green), and HaG (blue). The blue box represents the β → α loop 4 domain of the protein. The β → α loop 4 domain of the protein; the black box represents the different structures of the three proteins.