The pGEM®-4Z Vector is a standard cloning vector that can also efficiently synthesize RNA in vitro. The vector carries the lacZ α-peptide and the multiple cloning region arrangement from pUC18 for selecting recombinants by blue/white screening. In addition, the vector contains both the SP6 and T7 RNA polymerase promoters flanking the multiple cloning region.
The pGEM®-3Z and pGEM®-4Z Vectors are essentially identical except for the orientation of the SP6 and T7 promoters.
- Yanisch-Perron, C. et al. (1985) Gene 33, 103–19.