Stereoviews of a comparison with CgCBP at the Pi binding site (A), subsite −1 (B), and subsite +1 (C). A superimposition of SdCBAP (green) complexed with CbA (yellow) and sulfate (orange) and CgCBP (cyan) complexed with Pi (yellow), glycerol (subsite −1; gray), and β-d-glucose (subsite +1; gray) are shown. Hydrogen bonds present in the SdCBAP and CgCBP structures are shown as yellow and gray dashed lines, respectively.