FIG 1.
(A) Chemical structure and atom numbering scheme of the β-lactam oxacillin. (B) Fo-Fc omit maps contoured at 3 σ around oxacillin, which is covalently bound as an acyl-enzyme intermediate in the K70D OXA-1/oxacillin complex. (C) K84D OXA-24/40/oxacillin complex. Nitrogen atoms are colored blue, oxygens are colored red, and sulfurs are colored yellow. The carbon atoms of the OXA-1 complex are colored violet, and for the OXA-24/40 complex, carbons are green. This and all subsequent figures were made with PyMOL (38).