1oay: Difference between revisions
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Revision as of 16:43, 30 October 2007
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ANTIBODY MULTISPECIFICITY MEDIATED BY CONFORMATIONAL DIVERSITY
OverviewOverview
A single antibody was shown to adopt different binding-site conformations, and thereby bind unrelated antigens. Analysis by both x-ray, crystallography and pre-steady-state kinetics revealed an equilibrium, between different preexisting isomers, one of which possessed a, promiscuous, low-affinity binding site for aromatic ligands, including the, immunizing hapten. A subsequent induced-fit isomerization led to, high-affinity complexes with a deep and narrow binding site. A protein, antigen identified by repertoire selection made use of an unrelated, antibody isomer with a wide, shallow binding site. Conformational, diversity, whereby one sequence adopts multiple structures and multiple, functions, can increase the effective size of the antibody repertoire but, may also lead to autoimmunity ... [(full description)]
About this StructureAbout this Structure
1OAY is a [Protein complex] structure of sequences from [Rattus rattus] with FUR as [ligand]. Structure known Active Site: AC1. Full crystallographic information is available from [OCA].
ReferenceReference
Antibody multispecificity mediated by conformational diversity., James LC, Roversi P, Tawfik DS, Science. 2003 Feb 28;299(5611):1362-7. PMID:12610298
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