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Stereo view of superimposed structures of covalent ThDP adducts in BbXFPK and ScTK. Superimposition of AcThDP (gray) and DHEThDP (yellow) in BbXFPK (A), AcThDP in BbXFPK (gray) and DHEThDP in ScTK (green) (B), and DHEThDP in BbXFPK (yellow) and ScTK (green) (C). Labels for residues from the Pyr domain of the other subunit are underlined. The water molecules near the covalent adducts are shown as spheres.
