期刊
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
卷 577, 期 -, 页码 124-129出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.bbrc.2021.09.005
关键词
Protein conformation; Molecular crowder; Molecular dynamics; Hydration water dynamics
资金
- UGC
- Science and Engineering Research Board (SERB) , India [MTR/2019/00786, CRG/2020/005610]
This study reveals the impact of glucose as a molecular crowder on the solvent environment around protein surfaces in folded and intrinsically disordered states, showing differences in structural responses between the two states and the influence of glucose-induced crowding on hydration layers.
This exposition reveals the effect of glucose as a molecular crowder on the solvent environment in proximity of the protein surface in putative folded (Ubiquitin) and intrinsically disordered (dimeric Amyloid beta) states. Atomistic simulations reveal markedly higher structural perturbation in the disordered systems due to crowding effects, while the folded state retains overall structural fidelity. Key hydrophobic contacts in the disordered dimer are lost. However, glucose induced crowding results in elevated hydration on surfaces of both protein systems. Despite evident differences in their structural responses, the hydration layer of both the folded and disordered states display a distinct enhancement in lifetimes of mean residence and rotational relaxation under the hyperglycemic conditions. The results are crucial in the light of emergent co-solvent induced biological phenomena in crowded media. (c) 2021 Published by Elsevier Inc.
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