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Antibodies are now indispensable tools for all areas of cell biology and biotechnology as well as for diagnosis and therapy. Antigen-specific single immunoglobulin variable domains that bind to native antigens can be isolated and manipulated using yeast intracellular antibody capture technology but converting these to whole monoclonal antibody requires that complementary variable domains (VH or VL) bind to the same antigenic site. We describe a simple approach (CatcherAb) for specific isolation of such complementary single domains allowing the constitution of functional Fv, forming the basis of antigen-specific whole immunoglobulin and thus antibody production. We illustrate this approach by developing high-affinity Fv from single variable domains binding to RAS and LMO2 oncogenic proteins.

Original publication




Journal article


Nucleic Acids Res

Publication Date





Animals, Antibodies, Monoclonal, CHO Cells, Cricetinae, Cricetulus, Gene Library, Humans, Immunoglobulin Heavy Chains, Immunoglobulin Light Chains, Immunoglobulin Variable Region, Mice, NIH 3T3 Cells, Oncogene Protein p21(ras), Oncogene Proteins, Protein Engineering, Protein Structure, Tertiary, Proteins