Figure 3.

Binding of methionine isomers to Neisseria meningitides MetQ. (a) Superposition of MetQ with bound d‐methionine (cyan) and with bound l‐methionine (tv_yellow) depicted in a ribbons representation. (b) Superimposed binding sites for d‐methionine (orange) and l‐methionine (salmon) with surrounding residues shown in stick representation. (c) Hydrogen bonding interactions of the α‐amino and ‐carboxyl groups of the d‐methionine (cyan dashes) and l‐methionine (yellow dashes) to the neighboring residues of the d‐methionine (cyan sticks) and l‐methionine (yellow sticks) bound MetQ