Figure 1
From: DBBP: database of binding pairs in protein-nucleic acid interactions
Three H-bonds between Cytosine (C8) and Threonine (Thr224). Three H-bonds between Cytosine (C8) and Threonine (Thr224) of a protein-RNA complex (PDB ID: 4F3T). O2′ of Cytosine donates hydrogen to OG1 of Threonine. OG1 of Threonine donates hydrogen to O2′ of Cytosine and OG1 of Threonine donates hydrogen to O3′ of Cytosine.