FIG. 4.

Effects of small additions and deletions at the N terminus of CA-NC. Assembly phenotypes of proteins with minimal additions or deletions at the N terminus of CA-NC are shown. ΔP1, deletion of Pro1 residue; ΔN12, deletion of the N-terminal 12 residues of CA. All proteins had an additional initiating Met aside from the sequence shown. VAM/PVVIKTEGPAWT is the sequence of the C-terminal 3 residues of p10 and the N-terminal 12 residues of CA. Mutants with changes in this region are not drawn to scale relative to the rest of the CA-NC protein. s, spheres; t, tubes; −, no assembly.