A versatile plasmid expression vector for the production of biotinylated proteins by site-specific, enzymatic modification in Escherichia coli
- PMID: 8635750
- DOI: 10.1016/0378-1119(95)00762-8
A versatile plasmid expression vector for the production of biotinylated proteins by site-specific, enzymatic modification in Escherichia coli
Abstract
A versatile plasmid vector was designed to direct the synthesis of recombinant proteins in either one of two forms that will be biotinylated in Escherichia coli with high efficiency at a single, unique site. The protein of interest can be produced with a peptide substrate for E. coli biotin holoenzyme synthetase (BirA) joined directly to its N terminus, or alternatively, as a fusion to the C terminus of a maltose-binding protein domain (MalE) with the peptide substrate on its N terminus. To maximize the yield of biotinylated protein, the vector is designed to express the substrate in a coupled translation arrangement with the enzyme.
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