Fig. 4: Central cavities of EuTPT3 and EuFPS1.

Side and bottom views of a EuTPT3 and b EuFPS1 with the central cavities shown as gray surface model. Cavities were generated by PyMOL. Cartoon ribbon models of EuTPT3 and EuFPS1 are shown transparently. The DDxxD motif regions are colored in red. The α3–4 loops of EuTPT3 are colored in dark blue. The dashed line represents the untraceable α3–4 loop in chain A of EuTPT3. c Amino acids constructing the central cavity of EuTPT3.