Ontology highlight
ABSTRACT:
SUBMITTER: Vafabakhsh R
PROVIDER: S-EPMC3565842 | biostudies-literature | 2012 Aug
REPOSITORIES: biostudies-literature
Vafabakhsh Reza R Ha Taekjip T
Science (New York, N.Y.) 20120801 6098
The classical view of DNA posits that DNA must be stiff below the persistence length [<150 base pairs (bp)], but recent studies addressing this have yielded contradictory results. We developed a fluorescence-based, protein-free assay for studying the cyclization of single DNA molecules in real time. The assay samples the equilibrium population of a sharply bent, transient species that is entirely suppressed in single-molecule mechanical measurements and is biologically more relevant than the ann ...[more]