XU Wenchun, et al. Expression and purification of streptococcus pneumoniae virulence factor PspA[J]. Journal of Chongqing Medical University, 2007,(6):571-574.
XU Wenchun, et al. Expression and purification of streptococcus pneumoniae virulence factor PspA[J]. Journal of Chongqing Medical University, 2007,(6):571-574.DOI:
Objective:To obtain purified PspA produced by prokaryotic expression system.Methods:Template DNA was isolated from cultured Streptococcus pneumonia TIGR4.By gene recombination technology in vitro
sequence encoding PspA antigen epitope was cloned into PET-32(a) expression vector.After being confirmed by sequencing
expressed antigen protein was identified by SDS-PAGE and Western blot.Results:The DNA sequence analysis confirmed that the cloned PspA gene was according to GenBank data.The PspA fusion protein was proved by Western blot.Conclusion:A highly expressed recombinant PspA protein was successfully obtained.