β-Amyloid (1-40) TFA 是阿尔茨海默症患者脑斑块中发现的一种主要蛋白片段。

β-Amyloid (1-40) TFA is a primary protein in plaques found in the brains of patients with Alzheimers disease.

Solid

β-Amyloid (1-40) and (1-42) are major components of senile plaque amyloids, are physiological peptides present in the brain, cerebrospinal fluid (CSF) and plasma. The levels of CSF β-Amyloid (1-40) and (1-42) show a U-shaped natural course in normal aging.
The further aggregation of β-Amyloid (1-40)
1. Solid Aβ peptide was dissolved in cold hexafluoro-2-propanol (HFIP). The peptide was incubated at room temperature for at least 1h to establish monomerization and randomization of structure.
2. The HFIP was removed by evaporation, and the resulting peptide was stored as a film at -20 or -80°C.
3. The resulting film was dissolved in anhydrous DMSO at 5 mM and then diluted into the appropriate concentration and buffer (serum- and phenol red-free culture medium) with vortexing.
4. Next, the solution was age 48h at 4-8°C. The sample was then centrifuged at 14000g

Room temperature in continental US; may vary elsewhere.

Sealed storage, away from moisture and lightPowder -80°C 2 years；-20°C 1 year

DAEFRHDSGYEVHHQKLVFFAEDVGSNKGAIIGLMVGGVV

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

In Vitro:

H₂O

Peptide Solubility and Storage Guidelines:1.  Calculate the length of the peptide.2.  Calculate the overall charge of the entire peptide according to the following table:

[1]. Shoji M, et al. Cerebrospinal fluid Abeta40 and Abeta42: natural course and clinical usefulness. Front Biosci. 2002 Apr 1;7:d997-1006.