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A9810

Sigma-Aldrich

Amyloid β Protein Fragment 1-42

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About This Item

Empirical Formula (Hill Notation):
C203H311N55O60S
CAS Number:
Molecular Weight:
4514.04
MDL number:
UNSPSC Code:
12352202
NACRES:
NA.32

Assay

≥95% (HPLC)

Quality Level

form

powder

UniProt accession no.

storage temp.

−20°C

Gene Information

human ... APP(351)

Amino Acid Sequence

Asp-Ala-Glu-Phe-Arg-His-Asp-Ser-Gly-Tyr-Glu-Val-His-His-Gln-Lys-Leu-Val-Phe-Phe-Ala-Glu-Asp-Val-Gly-Ser-Asn-Lys-Gly-Ala-Ile-Ile-Gly-Leu-Met-Val-Gly-Gly-Val-Val-Ile-Ala

General description

Amyloid β Protein is produced from amyloid-β precursor protein (APP). It consists of two C terminal variants, such as a long tailed Aβ 1-42 and a short tailed Aβ 1-40. APP is located on human chromosome 21q21.3.

Application

Amyloid β Protein Fragment 1-42 has been used:
  • for the preparation of Aβ 1-42 oligomer
  • for western blot analysis
  • for the interference test of immunomagnetic reduction (IMR) plasma Aβ42 assay
  • to study the effects of resveratrol on Aβ 1-42-induced impairment of spatial learning, memory and synaptic plasticity
  • to investigate the effect of Aβ in epithelial cell culture

Biochem/physiol Actions

Amyloid β Protein Fragment 1-42 (Aβ 1-42) has antioxidant and neuroprotective properties. Accumulation of amyloid β Protein is associated with Alzheimer′s disease (AD) and Down Syndrome. Aβ 1-42 regulates cholesterol transport and may function as a transcription factor. It may possess anti-inflammatory and antimicrobial properties.
The predominant fragment of amyloid β-protein found in the brains of patients with Alzheimer′s disease and Down′s syndrome.

related product

Product No.
Description
Pricing

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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beta-amyloid expression in age-related cataract lens epithelia and the effect of beta-amyloid on oxidative damage in human lens epithelial cells
Xu J, et al.
Molecular Vision, 23, 1015-1015 (2017)
The role of Abeta circRNA in Alzheimer? s disease: alternative mechanism of Abeta biogenesis from Abeta circRNA translation
Mo D, et al.
bioRxiv, 260968-260968 (2018)
Magnesium Ions Inhibit the Expression of Tumor Necrosis Factor alpha and the Activity of gamma-secretase in a beta-amyloid Protein-dependent Mechanism in APP/PS1 Transgenic Mice
Yu X, et al.
Frontiers in Molecular Neuroscience, 11 (2018)
Plasma Amyloid-beta(Abeta 42) Correlates with Cerebrospinal Fluid Abeta 42 in Alzheimer?s Disease
Teunissen CE, et al.
Journal of Alzheimer'S Disease, 1-7 (2018)
J T Jarrett et al.
Biochemistry, 32(18), 4693-4697 (1993-05-11)
Several variants of the beta amyloid protein, differing only at their carboxy terminus (beta 1-39, beta 1-40, beta 1-42, and beta 1-43), have been identified as the major components of the cerebral amyloid deposits which are characteristic of Alzheimer's disease.

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