|Item||Catalog #||Description||Quantity||Price (USD)|
|Plasmid||43829||Standard format: Plasmid sent in bacteria as agar stab||1||$65|
This material is available to academics and nonprofits only.
Backbone manufacturerJohn Mekalanos lab, Harvard Medical School (PMID: 2836362)
- Backbone size (bp) 5720
Modifications to backboneSacB1 from pUC58-sacB1 cloned into the EcoRI site. BamHI site in oriV converted to a ClaI site by partial digestion and Klenow treatment.
Vector typeBacterial Expression ; Bacterial allelic exchange vector with sacB1
Selectable markersSacB (sucrose sensitivity)
Growth in Bacteria
Growth Strain(s)SM10 λpir
Growth instructionsContains lambda pir-dependent R6K replication origin; requires lambda pir-containing bacteria strain
Copy numberLow Copy
- Cloning method Restriction Enzyme
- 5′ sequencing primer Amp-R (ATAATACCGCGCCACATAGC) (Common Sequencing Primers)
A portion of this plasmid was derived from a plasmid made bySM10 λpir bacterial strain and pGP704 plasmid backbone from John Mekalanos, Harvard Medical School, Boston, MA. SacB1 gene from plasmid pUC58-sacBI from Dennis Ohman, VCU Medical Center, Richmond, VA.
Terms and Licenses
The plasmids deposited here comprise a set of SacB1-dependent allelic exchange vectors improved from a previously described suicide vector, pGP704 (Miller and Mekalanos, 1988), by including a system to select for plasmid loss by recombination.
Plasmid pRE107 was constructed by cloning the appropriate EcoRI fragment from pUC58-sacB1 (McIver et al., 1995) into pGP704 (see associated schematic image). The sacB1 allele is a modified variation of sacB, where unique restriction sites were removed by site directed mutagenesis (McIver et al., 1995). Additionally, the BamHI site in the R6K ori of the resulting plasmid was removed by partial BamHI digestion, blunting the resulting overhangs with PolIk (resulting in the formation of a ClaI site) and screening for its loss by restriction analysis.
The resulting plasmid together with others in this deposited series contain the conditional R6K ori, the origin of transfer (oriT) which allows conjugative transfer from permissive hosts, the sacB1 gene to provide negative selection and a MCS, along with a range of different AbR markers.
These plasmids were created by your colleagues. Please acknowledge the Principal Investigator, cite the article in which the plasmids were described, and include Addgene in the Materials and Methods of your future publications.
For your Materials & Methods section:pRE107 was a gift from Dieter Schifferli (Addgene plasmid # 43829 ; http://n2t.net/addgene:43829 ; RRID:Addgene_43829)
For your References section:Improved allelic exchange vectors and their use to analyze 987P fimbria gene expression. Edwards RA, Keller LH, Schifferli DM. Gene. 1998 Jan 30;207(2):149-57. 10.1016/S0378-1119(97)00619-7 PubMed 9511756