Is it possible to show in stick representation the C=O bond of the backbone of a residue while maintaning the ribbon representation of the backbone? I’ve tried setting on the ‘ribbackbone’ command, but that activates all the backbone atoms for other stick-displayed atoms, and I want to avoid that.

I’m attaching two images to clarify what I mean. Basically, to keep it as image1 but displaying the C=O bond of THR 71, to make the 2.88 Å distance clearer.