Research Article
Development of Safe and Non-Self-Immunogenic Mucosal Adjuvant by Recombinant Fusion of Cholera Toxin A1 Subunit with Protein Transduction Domain
Figure 1
Construction, purification, and transduction of the recombinant proteins. (a) Construction of plasmids expressing the proteins based on fusion of HIV-1 Tat PTD at termini of CTA1 or mCTA1. TmCTA1T was generated from TCTA1T by site-directed mutagenesis. (b) The fusion proteins expressed in E. coli were purified by His-tag affinity chromatography and separated by 12.5% SDS-PAGE. (c) The purified proteins were added to HeLa cells, and the presence of transduced proteins into the cells was detected by Western blot analysis.
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