Invitrogen™ Champion™ pET104 BioEase™ Gateway™ Biotinylation System
On demandInvitrogen™ Champion™ pET104 BioEase™ Gateway™ Biotinylation System
The Champion™ pET104-DEST BioEase™ Gateway® Expression System provides an easy, efficient method for expressing, purifying, and detecting biotinylated recombinant proteins. The Champion™ pET104-DEST vector (Figure 1) incorporates a 72 amino acid sequence from K. pneumoniae that directs in vivo biotinylation of a specific lysine residue. This tag is recognized and efficiently biotinylated by the enzyme Biotin Protein Ligase (BPL) encoded by the birA gene in E. coli(1). Proteins produced in the Champion™ pET104-DEST vector are expressed as fusion proteins to this sequence. Biotinylated fusion proteins can be purified on streptavidin agarose or detected on western blots using streptavidin-HRP (Figure 2) or streptavidin-AP conjugates.
Features
- attR sites for efficient recombination with any attL-flanked Gateway® entry vector
- The T7lac bacteriophage promoter for high-level expression of the recombinant fusion protein
- An enterokinase cleavage site for removal of the N-terminal BioEase™ fusion tag
Contents
- 6 flg of the Champion™ pET104-DEST vector
- 10 µg of the Champion™ pET104/GW/lacZ control vector
- twenty-one 50-µl aliquots of BL21 Star™(DE3) One Shot¤ competent cells
- S.O.C. medium
- pUC19 control DNA.
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