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Characterizing how chemical compounds bind to human serum albumin (HSA) is essential in evaluating drug candidates. Using warfarin as a test system, we validate the application of BIACORE SPR biosensors to reliably determine binding constants for drug/HSA interactions. The binding responses for warfarin over HSA surfaces were extremely reproducible even though warfarin is small compared to the size...
A capturing assay was used to monitor a Fab-antigen interaction using a BIACORE optical biosensor. The antigen, a truncated single-site mutant (F43V) version of the CD4 receptor, was captured onto the sensor surface using an immobilized nonneutralizing monoclonal antibody. While this assay design created an oriented antigen surface, the antigen slowly dissociated during subsequent binding of the Fab,...
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