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. 2020 Feb 13;25(4):825. doi: 10.3390/molecules25040825

Figure 4.

Figure 4

Encapsulation of supercharged (+36) green fluorescent protein (GFP) in A. fulgidus ferritin. Ferritin dissociates at low ionic strength, then supercharged GFP is spontaneously encapsulated in the protein cage (up to five molecules for tetraeicosamer), mediating its closure. 100 mM NaCl is required to avoid complexes’ precipitation.