The pGEM®-5Zf(+) Vector is derived from the pGEM®-3Zf(+) Vector and contains the origin of replication of the filamentous phage f1. This plasmid serves as a standard cloning vector, as a template for in vitro transcription and can be used for the production of circular ssDNA. This vector contains T7 and SP6 RNA polymerase promoters flanking a multiple cloning region within the α-peptide coding region of β-galactosidase. Insertional inactivation of the α-peptide allows recombinant clones to be identified directly by color screening on indicator plates when using appropriate E. coli strains (e.g., JM109). The multiple cloning region contains unique restriction sites for ApaI, AatII, SphI, NcoI, SacII, EcoRV, SpeI, NotI, PstI, SalI, NdeI, SacI, BstXI and NsiI.
- Yanisch-Perron, C. et al. (1985) Gene 33, 103–19.