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A common aim in probing single molecular bonds or the structural stability of proteins is to measure the kinetic rates at which a bond dissociates or a protein changes conformation under conditions of changing force. Using sample data taken from tests of ligand–receptor unbinding and protein unfolding/refolding, we show that populations of “single molecule” events, arranged into statistical arrays...
Communication between cells via their surface receptors can be studied by ultrasensitive single-molecule techniques designed to operate with two apposing surfaces. Two-dimensional (2D) kinetics measured with this approach is physically distinct from and biologically more relevant than three-dimensional kinetics with at least one interacting molecule in the fluid phase. Two assays for measuring 2D...
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