PEDS Advance Access originally published online on November 10, 2004
Protein Engineering Design and Selection 2004 17(10):709-713; doi:10.1093/protein/gzh083
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Selection of optical biosensors from chemisynthetic antibody libraries
Division for Protein and Nucleic Acid Chemistry, Medical Research Council Laboratory of Molecular Biology, Hills Road, Cambridge CB2 2QH, UK
2 To whom correspondence should be addressed. E-mail: winter{at}mrc-lmb.cam.ac.uk
We describe a method for creating antibodies with a fluorescent reporter integrated into the antigen-binding site. A reporter molecule was chemically linked to a hypervariable loop of an antibody repertoire displayed on phage, and this repertoire was selected for antigen binding. In one selected antibody, the fluorescence of the probe responded quantitatively to antigen binding. The method may have application for the engineering of homogeneous immunoassays.
Received September 30, 2004; accepted October 13, 2004.
Edited by Alan Fersht