Stereo figures to illustrate the PqsBCC129A catalytic dyad.
A, 2.0 Å electron density map is shown (gray) contoured at 2.0 σ level calculated using the final refined weighted 2Fo − Fc coefficients (REFMAC) and rendered with PyMOL showing PqsC residues Ala-129, Ala-130, His-269, Gln-270, Val-299, and Met-300 as sticks in green. B, PqsBCC129A Ala-129, His-269 catalytic dyad is shown in cyan superposed with the PqsDC112A triad residues (gray).