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@ARTICLE{OprzeskaZingrebe:846003,
author = {Oprzeska-Zingrebe, Ewa Anna and Smiatek, Jens},
title = {{P}referential {B}inding of {U}rea to {S}ingle-{S}tranded
{DNA} {S}tructures: {A} {M}olecular {D}ynamics {S}tudy},
journal = {Biophysical journal},
volume = {114},
number = {7},
issn = {0006-3495},
address = {Cambridge, Mass.},
publisher = {Cell Press},
reportid = {FZJ-2018-03175},
pages = {1551 - 1562},
year = {2018},
abstract = {In nature, a wide range of biological processes such as
transcription termination and intermolecular binding depend
on the formation of specific DNA secondary and tertiary
structures. These structures can be both stabilized or
destabilized by different cosolutes coexisting with nucleic
acids in the cellular environment. In our molecular dynamics
simulation study, we investigate the binding of urea at
different concentrations to short 7-nucleotide
single-stranded DNA structures in aqueous solution. The
local concentration of urea around a native DNA hairpin in
comparison to an unfolded DNA conformation is analyzed by a
preferential binding model in light of the Kirkwood-Buff
theory. All our findings indicate a pronounced accumulation
of urea around DNA that is driven by a combination of
electrostatic and dispersion interactions and accomplished
by a significant replacement of hydrating water molecules.
The outcomes of our study can be regarded as a first step
into a deeper mechanistic understanding toward
cosolute-induced effects on nucleotide structures in
general.},
cin = {IEK-12},
ddc = {570},
cid = {I:(DE-Juel1)IEK-12-20141217},
pnm = {131 - Electrochemical Storage (POF3-131)},
pid = {G:(DE-HGF)POF3-131},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29642026},
UT = {WOS:000430214500006},
doi = {10.1016/j.bpj.2018.02.013},
url = {https://juser.fz-juelich.de/record/846003},
}