Direct Measurement of a Tethered Ligand-Receptor Interaction Potential
- 7 February 1997
- journal article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 275 (5301) , 820-822
- https://doi.org/10.1126/science.275.5301.820
Abstract
Many biological recognition interactions involve ligands and receptors that are tethered rather than rigidly bound on a cell surface. A surface forces apparatus was used to directly measure the force-distance interaction between a polymer-tethered ligand and its receptor. At separations near the fully extended tether length, the ligands rapidly lock onto their binding sites, pulling the ligand and receptor together. The measured interaction potential and its dynamics can be modeled with standard theories of polymer and colloidal interactions.Keywords
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