| Bioactivity | β-Amyloid (1-40) is a primary protein in plaques found in the brains of patients with Alzheimer's disease. | ||||||
| Invitro | 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[1].Chronic infusion of beta-amyloid (1-40) for 14 days into the rat cerebroventricle decreased the activity of soluble protein kinase C (PKC) in the hippocampus. Subcellular translocation of PKC to membrane fraction in hippocampal slices of rats treated with beta-amyloid (1-40) is completely abolished under acute stimulation with 0.5 microM phorbol-dibutyrate (PDBu)[2].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 for 10 min at 4-8°C; the soluble oligomers were in the supernatant. The supernatant was diluted 10-200-fold for experiments.Methods vary depends on the downstream applications. | ||||||
| Name | β-Amyloid (1-40) | ||||||
| CAS | 131438-79-4 | ||||||
| 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 | ||||||
| Shortening | DAEFRHDSGYEVHHQKLVFFAEDVGSNKGAIIGLMVGGVV | ||||||
| Formula | C194H295N53O58S | ||||||
| Molar Mass | 4329.82 | ||||||
| Transport | Room temperature in continental US; may vary elsewhere. | ||||||
| Storage | Sealed storage, away from moisture
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