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A1075

Sigma-Aldrich

Amyloid β Protein Fragment 1-40

≥90% (HPLC), powder

Synonyme(s) :

Aβ40

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About This Item

Formule empirique (notation de Hill):
C194H295N53O58S
Numéro CAS:
131438-79-4
Poids moléculaire :
4329.80
Numéro MDL:
MFCD00130509
Code UNSPSC :
12352202
Nomenclature NACRES :
NA.32

Niveau de qualité

200

Pureté

≥90% (HPLC)

Forme

powder

Couleur

white

Solubilité

1% acetic acid: 1 mg/mL
saline: insoluble

Numéro d'accès UniProt

P05067

Température de stockage

−20°C

Informations sur le gène

human ... APP(351)

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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

Description générale

Amyloid β Protein Fragment 1-40 (Aβ40) is derived from the amyloid-β protein (Aβ), which is mapped to human chromosome 21q21.3. Aβ40 is predominantly present in the vascular amyloid deposits. Aβ40 comprises of C-terminal membrane insertion domain. It shows structural transition from random coil to a α-helical structure in a water-micelle medium.

Application

Amyloid β Protein Fragment 1-40 has been used:
  • in the temperature based conformational studies using Fourier transform infrared/differential scanning calorimetry (FT-IR/DSC) studies
  • as a reference standard in sandwich-type enzyme immunoassay for quantifying amyloid A4 protein in cerebrospinal fluid of patients with head trauma
  • as a component of embryonic stem cell medium to inhibit amyloid deposition in fibroblasts

Actions biochimiques/physiologiques

Amyloid β Protein Fragment 1-40 (Aβ40) forms cation based ion channels.
Amyloid β-protein is neurotrophic and neurotoxic in vivo and in vitro in human and rat neuronal cell cultures. β-Amyloid peptides (amino acids 1-42 and 1-43) are the major constituents of senile plaques and neurofibrillary tangles that occur in the hippocampus, neocortex, and amygdala of patients with Alzheimer′s disease.

Reconstitution

For maximal biological activity, dilute the stock in calcium-free PBS to 1 mg/ml and incubate at 37 °C for 4 days.

Autres remarques

Lyophilized from 0.1% TFA in H2O

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Gloves, type N95 (US)

Certificats d'analyse (COA)

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Amyloid beta protein 1-40 and 1-42 levels in matched cerebrospinal fluid and plasma from patients with Alzheimer disease
Mehta PD, et al.
Neuroscience Letters, 304(1-2), 102-106 (2001)
K Ueda et al.
Brain research, 639(2), 240-244 (1994-03-14)
The neurotoxic effects of soluble and aggregated synthetic amyloid beta protein (A beta P) have been investigated in rat primary cultures. Freshly solubilized beta(1-40) was neurotoxic not to immature, but to mature hippocampal neurons. On the other hand, aggregated beta(1-40)
Sandwich-Type Enzyme Immunoassay for Amyloid A4 Protein in Cerebrospinal Fluid From Patients with Head Trauma
PIRIM I
Turkish Journal of Medical Sciences, 31(1), 47-50 (2001)
Charlotte E Teunissen et al.
Journal of Alzheimer's disease : JAD, 62(4), 1857-1863 (2018-04-05)
The 42 amino acid form of amyloid-β (Aβ42) plays a key role in the pathogenesis of Alzheimer's disease (AD) and is a core biomarker for the diagnosis of AD. Numerous studies have shown that cerebrospinal fluid (CSF) Aβ42 concentrations are
Temperature-induced conformational changes in amyloid beta (1-40) peptide investigated by simultaneous FT-IR microspectroscopy with thermal system
Chu HL and Lin SY
Biophysical Chemistry, 89(2-3), 173-180 (2001)
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