From isolated polyelectrolytes to star-like assemblies: the role of sequence heterogeneity on the statistical structure of the intrinsically disordered neurofilament-low tail domain DOI Creative Commons

Mathar Kravikass,

Gil Koren, Omar A. Saleh

и другие.

The European Physical Journal E, Год журнала: 2024, Номер 47(2)

Опубликована: Фев. 1, 2024

Abstract Intrinsically disordered proteins (IDPs) are a subset of that lack stable secondary structure. Given their polymeric nature, previous mean-field approximations have been used to describe the statistical structure IDPs. However, amino-acid sequence heterogeneity and complex intermolecular interaction network significantly impeded ability get proper approximations. One such case is intrinsically tail domain neurofilament low (NFLt), which comprises 50 residue-long uncharged followed by 96 negatively charged domain. Here, we measure two NFLt variants identify impact main subdomains on its interactions Using synchrotron small-angle x-ray scattering, find induces attractive cause it self-assemble into star-like polymer brushes. On other hand, when truncated, remaining N-terminal domains remain isolated in solution with typical polyelectrolyte characteristics. We further discuss how competing long- short-ranged within brushes dominate ensemble and, turn, implications previously observed phenomena NFL native diseased states. Graphic abstract Visual schematic SAXS measurement results Neurofilament-low IDP (NFLt). NFLts assemble through hydrophobic (marked blue). In increasing salinity, brush height (h) initially increased following decrease while gaining additional tails assembly. Isolating sub-domain red) polyelectrolytes

Язык: Английский

All-atom Molecular Dynamics Simulations of Polymer and Polyelectrolyte Brushes DOI Creative Commons
Raashiq Ishraaq, Siddhartha Das

Chemical Communications, Год журнала: 2024, Номер 60(48), С. 6093 - 6129

Опубликована: Янв. 1, 2024

New discoveries on polymer and polyelectrolyte brush systems the corresponding brush-supported ions water, arising from employing all-atom molecular dynamics simulations, have been thoroughly reviewed.

Язык: Английский

Процитировано

9
From isolated polyelectrolytes to star-like assemblies: the role of sequence heterogeneity on the statistical structure of the intrinsically disordered neurofilament-low tail domain DOI Creative Commons

Mathar Kravikass,

Gil Koren, Omar A. Saleh

и другие.

The European Physical Journal E, Год журнала: 2024, Номер 47(2)

Опубликована: Фев. 1, 2024

Abstract Intrinsically disordered proteins (IDPs) are a subset of that lack stable secondary structure. Given their polymeric nature, previous mean-field approximations have been used to describe the statistical structure IDPs. However, amino-acid sequence heterogeneity and complex intermolecular interaction network significantly impeded ability get proper approximations. One such case is intrinsically tail domain neurofilament low (NFLt), which comprises 50 residue-long uncharged followed by 96 negatively charged domain. Here, we measure two NFLt variants identify impact main subdomains on its interactions Using synchrotron small-angle x-ray scattering, find induces attractive cause it self-assemble into star-like polymer brushes. On other hand, when truncated, remaining N-terminal domains remain isolated in solution with typical polyelectrolyte characteristics. We further discuss how competing long- short-ranged within brushes dominate ensemble and, turn, implications previously observed phenomena NFL native diseased states. Graphic abstract Visual schematic SAXS measurement results Neurofilament-low IDP (NFLt). NFLts assemble through hydrophobic (marked blue). In increasing salinity, brush height (h) initially increased following decrease while gaining additional tails assembly. Isolating sub-domain red) polyelectrolytes

Язык: Английский

Процитировано

1