fig4

Figure 4. Computational model of the φ13 CI-NTD:Mor complex. (A) Superposition of the TP901-1 experimental CI-NTD:Mor complex (PDB code 6TRI, color scheme as in previous figures) with the φ13 CI-NTD:Mor complex obtained with AF2 (in grey). The extreme N- and C-terminus of Mor are omitted for clarity. Helices are shown as cylinders. Side chains of interface residues mentioned in the text are shown as sticks representation. Label numbering is for TP901-1 proteins; (B) Close-up of the φ13 CI-NTD:Mor complex highlighting the Mor pocket in which Gln55 from CI fits. A semitransparent surface is shown for Mor. CI-NTD: N-terminal domain of Phage repressor.