XU Wen-chun, et al. Construction and evaluation of a high effective GFP reporter plasmid for Streptococcus pneumoniae[J]. Journal of Chongqing Medical University, 2008,33(12):1409-1413.
XU Wen-chun, et al. Construction and evaluation of a high effective GFP reporter plasmid for Streptococcus pneumoniae[J]. Journal of Chongqing Medical University, 2008,33(12):1409-1413.DOI:
Objective: To construct a high effective GFP reporter plasmid for screening Streptoccus pneumoniae virulent genes by differential fluorescence induction. Methods: The SD-ENH-GFP region of plasmid pGreenTIR was cloned into a suicide plasmid pEVP3 which contains a cat gene encoding resistance protein to chloramphenicol
and a report plasmid pEVP3-SDGFP was constructed.To evaluate the function of this plasmid
a 500bp fragment of the pneumolysin gene (ply) of TIGR4 was coloned in the upstream of gfp and then was transformed into Streptococcus pneumoniae TIGR4. Results: The plasmid pEVP3-SDGFP could report the expression of ply both in vivo and in vitro
and was more effective than plasmid pEGFP-1 without SD and ENH sequence before gfp gene. Conclusion: Plasmid pEVP3-SDGFP can be used to construct the promoter-trap library which is needed in DFI.