This is an interactive display using the CHIME software. Rotate the enzyme by dragging it with the left mouse button. Change its appearance by clicking the image with the right mouse button to show the structure more clearly.
Using the right mouse button, set "Display" to cartoons.
Click again and set "Color" to structure.
Click again and set "Select" via "hetero" to ligand.
Click again and set "Display" via "spacefill" to Van der Waals radii.
You should now be able to see nucleotides in the active sites.
Rotate the ensemble with the left button, and experiment with different views to see how the protein grips its ligands. Click HERE for a brief reminder of the main CHIME commands, or HERE for a full tutorial. Use the browser back button to return to the lecture notes.