Figure 4From: Crystal structures of an Extracytoplasmic Solute Receptor from a TRAP transporter in its open and closed forms reveal a helix-swapped dimer requiring a cation for α-keto acid bindingComparison of the TakP ad SiaP structure. Stereo figure of a superimposition of the Cα positions of TakP (blue) and SiaP (magenta), both in their unliganded form.Back to article page