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@ARTICLE{Sabir:111910,
author = {Sabir, T. and Toulmin, A. and Ma, L. and Jones, A.C. and
McGlynn, P. and Schröder, G.F. and Magennis, S.W.},
title = {{B}ranchpoint expansion in a fully-complementary three-way
{DNA} junction.},
journal = {Journal of the American Chemical Society},
volume = {134},
issn = {0002-7863},
address = {Washington, DC},
publisher = {American Chemical Society},
reportid = {PreJuSER-111910},
pages = {6280 - 6285},
year = {2012},
note = {We thank the BBSRC for support (BB/G00269X/1); Claus
Seidel, Ralf Kuhnemuth, and Stefan Marawske for assistance
in developing our MFD setup; Suren Felekyan for help with
data analysis; and Jochen Ark for assistance with
experiments. S.W.M. acknowledges the award of an EPSRC
advanced research fellowship (EP/D073154), and L.M.
acknowledges the award of a CSC scholarship.},
abstract = {Branched nucleic acid molecules serve as key intermediates
in DNA replication, recombination, and repair; architectural
elements in RNA; and building blocks and functional
components for nanoscience applications. Using a combination
of high-resolution single-molecule FRET, time-resolved
spectroscopy, and molecular modeling, we have probed the
local and global structure of a DNA three-way junction (3WJ)
in solution. We found that it adopts a Y-shaped, pyramidal
structure, in which the bases adjacent to the branchpoint
are unpaired, despite the full Watson-Crick complementarity
of the molecule. The unpairing allows a nanoscale cavity to
form at the junction center. Our structure accounts for
earlier observations made of the structure, flexibility, and
reactivity of 3WJs. We anticipate that these results will
guide the development of new DNA-based supramolecular
receptors and nanosystems.},
keywords = {Computer Simulation / DNA: chemistry / Fluorescence
Resonance Energy Transfer: methods / Hydrogen Bonding / Ions
/ Kinetics / Molecular Dynamics Simulation / Nanotechnology:
methods / Nucleic Acid Conformation / Nucleic Acids /
Nucleotides: chemistry / RNA: chemistry / Reproducibility of
Results / Spectrophotometry: methods / Ions (NLM Chemicals)
/ Nucleic Acids (NLM Chemicals) / Nucleotides (NLM
Chemicals) / RNA (NLM Chemicals) / DNA (NLM Chemicals) / J
(WoSType)},
cin = {ICS-6},
ddc = {540},
cid = {I:(DE-Juel1)ICS-6-20110106},
pnm = {Funktion und Dysfunktion des Nervensystems / BioSoft:
Makromolekulare Systeme und biologische
Informationsverarbeitung},
pid = {G:(DE-Juel1)FUEK409 / G:(DE-Juel1)FUEK505},
shelfmark = {Chemistry, Multidisciplinary},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:22329743},
UT = {WOS:000302524800037},
doi = {10.1021/ja211802z},
url = {https://juser.fz-juelich.de/record/111910},
}