from Part III - Mapping DNA Molecules at the Single-Molecule Level
Published online by Cambridge University Press: 05 May 2022
Biomolecules and biopolymers undergo conformational transitions during many biological processes. For example, some proteins are observed to have multiple intermediate states in the folding/unfolding pathways (Stigler et al., 2011; Yu et al., 2012); intrinsically disordered proteins can form diverse metastable structures (Neupane et al., 2014); functional proteins can often be switched between active and inactive states through conformational transitions (Yang et al., 2003; Hanson et al., 2007; Wijeratne et al., 2013); nucleosomes are able to regulate DNA unwrapping through their conformational transitions (Ngo et al., 2015). These dynamic states of DNA and proteins control their biological functions. Since force plays a fundamental role in many, if not all, biological systems, one way to reveal the dynamics of the molecules is to elucidate its intra- and intermolecular force, which can be used as a marker to capture information about their conformational changes.
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