Comparison of the position of bound sulfate in the active sites of
SDHR55M and CSO. The stereoview shows the two active
sites superimposed with the CSO residues colored gray and the the
SDHR55M atoms colored as follows: molybdenum (green),
sulfur (orange), phosphorous (magenta), oxygen
(red), nitrogen (blue), and carbon (cyan).
Labels show residues with SDH numbering.