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Surface plasmon resonance (SPR) biosensors such as the BIAcore 2000 are a useful tool for the analysis of protein-heparin interactions. Generally, biotinylated heparin is captured on a streptavidin-coated surface to create heparinized surfaces for subsequent binding analyses. In this study we investigated three commonly used techniques for the biotinylation of heparin, namely coupling through either...
We describe the use of two heparin-binding proteins, avidin and lactoferrin, as probes for monitoring the amount of heparin immobilized to plastic surfaces. The proteins were derivatized with either fluorescent labels or europium chelates, enabling sensitive, fast, reproducible, and robust assays, and were used to measure the amount of protein bound to heparinized microplates, with particular attention...
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