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@ARTICLE{Russo:867572,
author = {Russo, Daniela and de Angelis, Andrea and Garvey,
Christopher. J. and Wurm, Frederick R. and Appavou,
Marie-Sousai and Prevost, Sylvain},
title = {{E}ffect of {P}olymer {C}hain {D}ensity on
{P}rotein–{P}olymer {C}onjugate {C}onformation},
journal = {Biomacromolecules},
volume = {20},
number = {5},
issn = {1526-4602},
address = {Columbus, Ohio},
publisher = {American Chemical Soc.},
reportid = {FZJ-2019-06195},
pages = {1944 - 1955},
year = {2019},
abstract = {Many biomedical applications employ covalent attachment to
synthetic polymers to enhance the efficiency of proteins or
other therapeutically active molecules. We report here the
impact of polymer conjugation on the structural and thermal
stability of a protein model, the bovine serum albumin,
using a variable number of linear biodegradable
polyphosphoesters, which were covalently tethered to the
protein. We observed that BSA’s secondary structure
measured by circular dichroism is independent of the
conjugation. Small-angle neutron scattering, however,
reveals a change from ellipsoid to globular shape of the
whole complex arising from a slight compaction of the
protein core and an increase of the polymer’s radius of
gyration as a function of the grafting polymer density. In
particular, we highlight a gradual change of the polymer
conformation around the protein and elongation of the
semimajor dimension of the ellipsoidal protein. Our results
will contribute to the description of biophysical
characteristics of a new class of biologically relevant
protein–polymer conjugates},
cin = {JCNS-FRM-II / JCNS-1 / MLZ},
ddc = {570},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-1-20110106 / I:(DE-588b)4597118-3},
pnm = {6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)
/ 6G15 - FRM II / MLZ (POF3-6G15)},
pid = {G:(DE-HGF)POF3-6G4 / G:(DE-HGF)POF3-6G15},
experiment = {EXP:(DE-MLZ)KWS2-20140101},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:30933481},
UT = {WOS:000468120800011},
doi = {10.1021/acs.biomac.9b00184},
url = {https://juser.fz-juelich.de/record/867572},
}