Immobilisation of a repressor protein for binding of plasmid DNA.
The use of plasmid DNA in gene therapy and genetic vaccination has increased the need for scalable and sustainable production processes. One key challenge for bioprocess engineering is the separation of plasmid DNA from structurally related impurities. Affinity purification procedures allow a highly selective capturing of the target molecule. In this paper, we present the isolation of a his-tagged lac repressor, its non-covalent immobilisation to different matrices and binding of DNA, thus enabling us to screen for combinations of ligands and stationary phases by using a building block principle.
Hasche
Anja
A
Department of Fermentation Engineering, Faculty of Technology, Bielefeld University, Universitaetsstrasse 25, P.O. Box 100131, D-33501 Bielefeld, Germany.
Voss
Carsten
C
D000345:Affinity Labels; D002846:Chromatography, Affinity / Q000379:methods; D004247:DNA / Q000378:metabolism*; D004591:Electrophoresis, Polyacrylamide Gel; D010957:Plasmids; D011485:Protein Binding; D012097:Repressor Proteins / Q000737:chemistry* / Q000378:metabolism
D000345:Affinity Labels; D012097:Repressor Proteins; D004247:DNA