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@ARTICLE{Samantray:902426,
author = {Samantray, Suman and Olubiyi, Olujide O. and Strodel,
Birgit},
title = {{T}he {I}nfluences of {S}ulphation, {S}alt {T}ype, and
{S}alt {C}oncentration on the {S}tructural {H}eterogeneity
of {G}lycosaminoglycans},
journal = {International journal of molecular sciences},
volume = {22},
number = {21},
issn = {1422-0067},
address = {Basel},
publisher = {Molecular Diversity Preservation International},
reportid = {FZJ-2021-04248},
pages = {11529 -},
year = {2021},
abstract = {The increasing recognition of the biochemical importance of
glycosaminoglycans (GAGs) has in recent times made them the
center of attention of recent research investigations. It
became evident that subtle conformational factors play an
important role in determining the relationship between the
chemical composition of GAGs and their activity. Therefore,
a thorough understanding of their structural flexibility is
needed, which is addressed in this work by means of all-atom
molecular dynamics (MD) simulations. Four major GAGs with
different substitution patterns, namely hyaluronic acid as
unsulphated GAG, heparan-6-sulphate, chondroitin-4-sulphate,
and chondroitin-6-sulphate, were investigated to elucidate
the influence of sulphation on the dynamical features of
GAGs. Moreover, the effects of increasing NaCl and KCl
concentrations were studied as well. Different structural
parameters were determined from the MD simulations, in
combination with a presentation of the free energy landscape
of the GAG conformations, which allowed us to unravel the
conformational fingerprints unique to each GAG. The largest
effects on the GAG structures were found for sulphation at
position 6, as well as binding of the metal ions in the
absence of chloride ions to the carboxylate and sulphate
groups, which both increase the GAG conformational
flexibility.},
cin = {IBI-7},
ddc = {540},
cid = {I:(DE-Juel1)IBI-7-20200312},
pnm = {5244 - Information Processing in Neuronal Networks
(POF4-524) / 5241 - Molecular Information Processing in
Cellular Systems (POF4-524)},
pid = {G:(DE-HGF)POF4-5244 / G:(DE-HGF)POF4-5241},
typ = {PUB:(DE-HGF)16},
pubmed = {34768961},
UT = {WOS:000719525400001},
doi = {10.3390/ijms222111529},
url = {https://juser.fz-juelich.de/record/902426},
}