A1075
Amyloid β Protein Fragment 1-40
≥90% (HPLC), powder
Sinónimos:
Aβ40
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Fórmula empírica (notación de Hill):
C194H295N53O58S
Número CAS:
Peso molecular:
4329.80
UNSPSC Code:
12352202
NACRES:
NA.32
MDL number:
Form:
powder
Assay:
≥90% (HPLC)
Servicio técnico
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Permítanos ayudarleGeneral description
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
Biochem/physiol Actions
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.
Amyloid β Protein Fragment 1-40 (Aβ40) forms cation based ion channels.
Preparation Note
For maximal biological activity, dilute the stock in calcium-free PBS to 1 mg/ml and incubate at 37 °C for 4 days.
Other Notes
Lyophilized from 0.1% TFA in H2O
Clase de almacenamiento
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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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)
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
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)
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)
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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