FolX from Pseudomonas aeruginosa is octameric in both crystal and solution

FolX encodes an epimerase that forms one step of the tetrahydrofolate biosynthetic pathway, which is of interest as it is an established target for important drugs. Here we report the crystal structure of FolX from the bacterial opportunistic pathogen Pseudomonas aeruginosa, as well as a detailed analysis of the protein in solution, using analytical ultracentrifugation (AUC) and small-angle X-ray scattering (SAXS). In combination, these techniques confirm that the protein is an octamer both in the crystal structure, and in solution. STRUCTURED SUMMARY OF PROTEIN INTERACTIONS: FolX and FolXbind by x-ray crystallography (View interaction) FolX and FolXbind by cosedimentation in solution (View interaction) FolX and FolXbind by x ray scattering (View interaction)