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. Author manuscript; available in PMC: 2018 Jun 27.
Published in final edited form as: ACS Nano. 2017 Jun 15;11(6):6416–6421. doi: 10.1021/acsnano.7b02884

Figure 1.

Figure 1

Co-engineering of E-tagged proteins and nanoparticles for direct cytoplasmic protein delivery. a) Strategy for protein engineering, and the chemical structure of arginine functionalized gold nanoparticles (ArgNPs). b) Simple mixing of E-tagged proteins and ArgNPs provides hierarchical nanoassemblies. c) Representative transmission electron micrograph (TEM) of GFP-E10:ArgNPs assemblies. Red arrow indicates nanoparticle coating on the nanoassembly surface. d) Proposed fusion-like mechanism for direct cytosolic protein delivery.