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Updated: Jul 8, 2026

Generation of Recombinant Human IgG Monoclonal Antibodies from Immortalized Sorted B Cells
Published on: June 5, 2015
Generation and expression of a minimal hybrid Ig-receptor formed between single domains from proteins L and G
Steven L Harrison1, Nicholas G Housden, Stephen P Bottomley
1Biomolecular Sciences Group, School of Biological Sciences, University of Southampton, Bassett Crescent East, Southampton SO16 7PX, UK.
Abstract:
The Ig-binding properties of protein L from Peptostreptococcus magnus and protein G from Streptococcus have been successfully combined through the construction of a novel hybrid protein, consisting of a single Ig-binding domain from each protein. The biophysical and biochemical properties of this construct have been characterized through equilibrium and pre-equilibrium fluorescence spectroscopy, circular dichroism, isothermal titration calorimetry, affinity chromatography, and conformational stability studies using a chemical denaturant in order to examine the structure and availability of ligand binding sites in each domain. These studies show that despite the small size of the protein (Mw=16.5 kDa) each domain behaves in an independent manner with respect to the binding characteristics of the same domain in isolation.
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