SEC of AfFtn–GFP(+36) in high‐salt buffer after overnight incubation in no‐salt buffer mixed at 1:2 AfFtn:GFP(+36) (6 μM AfFtn, 12 μM GFP(+36)), demonstrating the effect of increasing the ionic strength after initial encapsulation. Free GFP(+36) was observed, indicating that increasing ionic strength partially disrupted the assembly. However, the majority remained encapsulated, indicating that post‐encapsulation, the complex is fairly stable.