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Gene Synthesis> | ... The gene encoding HPV16 L1 protein (GenBank No. AACO9292) was optimized according to the codon usage in E. coli, allowing some deviations and synthesized by GenScript (Nanjing, China) ( Grote et al., 2005 and Wu et al., 2007). As shown in Fig. ... | Get A Quote |
Bacterial Expression System> | Get A Quote |
HPV vaccines based on L1 virus-like particles (VLPs) provided a high degree of protection against HPVs infection. In this study, the codon optimized HPV16 L1 gene were sub-cloned into five procaryotic expression vectors (pET-28a, pET-32a, pGEX-4T-2, pE-sumo and pHSIE), and fused with different protein tags. No recombinant proteins were expressed in pET-28a-L1 and pHSIE-L1, and the proteins expressed by pET-32a-L1 plasmid with TRX-tag were in the form of inclusion body. Only SUMO-tagged and GST-tagged L1 proteins expressed by pE-Sumo-L1 or pGEX-4T-L1 were soluble. The yield of SUMO-L1 protein reached 260mg/L fermentation medium in shake flask. After SUMO tags were eliminated, a 90% purity of L1 proteins was gene... More