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La Jolla, CA, United States

Muyldermans S.,Vrije Universiteit Brussel | Smider V.V.,Fabrus Inc. | Smider V.V.,Scripps Research Institute
Current Opinion in Immunology

Antibodies have been a remarkably successful class of molecules for binding a large number of antigens in therapeutic, diagnostic, and research applications. Typical antibodies derived from mouse or human sources use the surface formed by complementarity determining regions (CDRs) on the variable regions of the heavy chain/light chain heterodimer, which typically forms a relatively flat binding surface. Alternative species, particularly camelids and bovines, provide a unique paradigm for antigen recognition through novel domains which form the antigen binding paratope. For camelids, heavy chain antibodies bind antigen with only a single heavy chain variable region, in the absence of light chains. In bovines, ultralong CDR-H3 regions form an independently folding minidomain, which protrudes from the surface of the antibody and is diverse in both its sequence and disulfide patterns. The atypical paratopes of camelids and bovines potentially provide the ability to interact with different epitopes, particularly recessed or concave surfaces, compared to traditional antibodies. © 2016 Elsevier Ltd. Source

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Innovative Science Unlocking a Universe of Therapeutic Breakthroughs

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Fabrus Inc. | Date: 2015-04-21

Provided herein is a rational method of affinity maturation to evolve the activity of an antibody or portion thereof based on the structure/affinity or activity relationship of an antibody. The resulting affinity matured antibodies exhibit improved or optimized binding affinity for a target antigen.

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