Analysis Note

To view the Certificate of Analysis for this product, please visit www.oxfordgenetics.com.

General description

This plasmid is designed to express tagged proteins in E. coli. The plasmid contains a constitutive promoter (OXB20) derived from the region upstream of the E. coli RecA gene. It does not require induction or any additional components for activity. It is the strongest of the bacterial promoters that we provide and this high level of expression can cause expression problems with some proteins with poor solubility. For this reason we sell a range of bacterial promoters with different expression levels (OXB1(low)>OXB20(high)) that can be provided with the peptide tags in this plasmid on request. About the Peptide Tag:This plasmid contains a c-terminal Flag epitope tag that can be fused to a gene of interest to allow protein detection and/or purification. The sequence of the tag is: DYKDDDDK. About the Cleavage Tag:This plasmid also encodes a protease cleavage site that is designed to be positioned between your gene of interest and the tag to allow the removal of the tag following protein purification or isolation. This plasmid contains a Thrombin cleavage tag. The protein sequence of the cleavage tag is: LVPRGS. It cleaves preferentially between the Arg and Gly residues. Off target cleavage can often occur at non-specific sites normally from other contaminating proteases. To ensure maximal protein integrity the enzyme reagent must be highly pure. Promoter Expression Level: This plasmid contains a constitutive bacterial promoter that does not require induction. It is the strongest bacterial promoter we sell and this can cause solubility and expression problems with some proteins. We also offer a range of other bacterial promoters that are compatible with this plasmid and are available on request.

Legal Information

Oxford Genetics is a trademark of Oxford Genetics Ltd

FLAG is a registered trademark of Sigma-Aldrich Co. LLC

Other Notes

Looking for more vector options to move your experiments forward faster? Consider a custom cloning vector designed and built by Oxford Genetics^™. Find out more at Oxford Genetics - Sigma's partner for cloning and expression vectors for molecular biology and synthetic biology applications.

Sequence

Please select the file type you require. For reference most cloning programs will import a .gb (Genbank) file and will show all of the plasmids features automatically when downloaded and imported.Genebank Vector Sequence FileFASTA Vector Sequence FileFull Plasmid Map

Quick-reference Plasmid Map