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A general vector, pASK84, for cloning, bacterial production, and single-step purification of antibody Fab fragments

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Skerra,  Arne
Department of Molecular Membrane Biology, Max Planck Institute of Biophysics, Max Planck Society;

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Skerra, A. (1994). A general vector, pASK84, for cloning, bacterial production, and single-step purification of antibody Fab fragments. Gene, 141(1), 79-84. doi:10.1016/0378-1119(94)90131-7.


Cite as: http://hdl.handle.net/21.11116/0000-0007-AA60-D
Abstract
The expression vector pASK84 was designed for the convenient cloning of immunoglobulin variable domain genes, as well as periplasmic secretion of the corresponding Fa fragment in Escherichia coli. The plasmid provides the constant domain genes of mouse IgG1/kappa with a hexa-histidine tag fused to the C terminus of the heavy chain. This strategy enables the rapid and efficient purification of the functional recombinant Fa fragment via immobilized metal affinity chromatography. The versatility of this expression and purification system is demonstrated using the variable domains of the well-characterized anti-lysozyme antibody D1.3.