Figure 4

Coating of FeGQD with CPV VP2 proteins.

(A) UV–vis spectra of VP2 (1 mg mL⁻¹), FeGQD (0.5 mg mL⁻¹) and FeGQD@VP2 (0.8 mg mL⁻¹); (B) Agarose gel electrophoresis; the sample was stained with Coomassie blue R250 and Prussian blue staining respectively. Lane 1: FeGQD, Lane 2 and Lane 3: FeGQD@VP2, Lane 4: VP2 protein; (C) TEM images of FeGQD; (D) TEM images FeGQD@VP2 without phosphotungstic acid staining; (E) TEM images FeGQD@VP2 stained by phosphotungstic acid.