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Cited by 188

The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.

Structural Transitions Associated with the Interaction of Alzheimer β-Amyloid Peptides with Gangliosides

Open access
McLaurin, JoAnne, Franklin, Trudy, Fraser, Paul E., Chakrabartty, Avijit·1998·Journal of Biological Chemistry

Abstract

Alzheimer's disease is characterized pathologically by the presence of neurofibrillary tangles and amyloid plaques. The principal component of the plaque is the beta-amyloid peptide (Abeta), a 39-43-residue peptide. The conformational change required for the conversion of soluble peptide into amyloid fibrils is modulated by pH, Abeta concentration, addition of kinetic and thermodynamic enhancers, and alterations in the primary sequence of Abeta. We report here the ability of gangliosides to induce an alpha-helical structure in Abeta and thereby diminish fibrillogenesis. Circular dichroism and a fluorescence dye release assay data indicate that gangliosides interact with and induce alpha-helix formation in Abeta. We find that the sialic acid moiety of gangliosides is necessary for the induction of alpha-helical structure. Differences in the amount and the position of the sialic acid on the carbohydrate backbone also affect the conformational switch. The Abeta-ganglioside interaction at pH 7.0, monitored by CD, is stable over time and resistant to high concentrations of NaCl. The induction of alpha-helical structure is greater with Abeta1-40 than Abeta1-42. The ability of gangliosides to sequester Abeta from fibril formation was also evaluated by electron microscopy.

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Metadata

Authors
McLaurin, J., Franklin, T., Fraser, P. E., & Chakrabartty, A.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1998-02
Volume
273
Issue
8
Pages
4506-4515
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2121890455
Cited by
188
References
2
FWCI
5.82
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Structural Transitions Associated with the Interaction of Alzheimer β-Amyloid Peptides with Gangliosides. https://app.cochat.ai/papers/10.1074/jbc.273.8.4506
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McLaurin, J., Franklin, T., Fraser, P. E., & Chakrabartty, A. (1998). Structural Transitions Associated with the Interaction of Alzheimer β-Amyloid Peptides with Gangliosides. Journal of Biological Chemistry. https://doi.org/10.1074/jbc.273.8.4506

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