PP69

β-Amyloid Peptide (1-42), Human

• Sinonimo/i: β-Amyloid Peptide (1-42), Human, DAEFRHDSGYEVHHQKLVFFAEDVGSNKGAIIGLMVGGVVIA
• Formula empirica (notazione di Hill): C₂₀₃H₃₁₂N₅₆O₅₉S
• Peso molecolare: 4513.05
• Codice UNSPSC: 12352202
• NACRES: NA.77

Proprietà

• Saggio: ≥95% (HPLC)
• Livello qualitativo: 100
• Stato: lyophilized
• non contiene: preservative
• Produttore/marchio commerciale: Calbiochem^®
• Condizioni di stoccaggio: OK to freeze; desiccated (hygroscopic)
• Solubilità: 50 mM Tris-HCl, pH >9.0: ≤1 mg/mL
• Condizioni di spedizione: ambient
• Temperatura di conservazione: −20°C

Descrizione

Descrizione generale

Wild-type, human Aβ_1-42 peptide. A number of mutations, identified in the gene encoding the β-amyloid precursor protein (βAPP), have been linked to early-onset Familial Alzheimer’s Disease. Mutations in the genes encoding presenilin 1 and presenilin 2 have also been shown to alter the processing of βAPP, resulting in increased extracellular concentration of β-amyloid peptide Aβ1-42(43) relative to Aβ1-40. Biophysical and biochemical experiments suggest that Aβ1-42(43) may serve as a catalyst for the aggregation and deposition of β-amyloid peptide (Aβ) leading to neurotoxic effects associated with senile plaque formation. Furthermore, antibodies recog-nizing Aβ1-42 revealed that the long form of the peptide is increased in presenilin and βAPP mutants, while other studies have used Aβ specific antibodies to prevent the in vitro fibrillar aggregation of Aβ. Amino acid sequence verified by amino acid analysis or sequencing. This product is supplied in a form that is not neurotoxic prior to a preincubation step. The appearance of toxicity has recently been shown to correlate to the extent of β sheet structure. Useful for neurotoxicity studies and substrate cleavage assays.

Wild-type, human Aβ_1-42 peptide. This product is supplied in a form that is not neurotoxic prior to a pre-incubation step. The level of toxicity has been shown to correlate to the extent of β sheet structure.

Immunogeno

Human

Applicazioni

Substrate Cleavage Assays (30-100 μg/ml)

Attenzione

Toxicity: Standard Handling (A)

Sequenza

H-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-OH

Synthetic peptide corresponding to amino acid residues 1 - 42 of the processed human β-amyloid peptide.

Stato fisico

Supplied as a chloride salt.

Ricostituzione

Reconstitute just prior to use. Do not store following reconstitution, as aggregation may occur.

Altre note

Citron, M., et al. 1997. Nature Med.3, 67.
Hardy, J. 1997. Trends in Neurosci.20, 154.
Solomon, B., et al. 1997. Proc. Natl. Acad. Sci. USA94, 4109.
Duff, K., et al. 1996. Nature 383, 710.
Iwatsubo, T., et al. 1994. Neuron13, 45.
Suzuki, N., et al. 1994. Science264, 133.
Simmons, L.K., et al. 1994. Mol. Pharmacol.45, 373.

Note legali

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Informazioni sulla sicurezza

• Codice della classe di stoccaggio: 11 - Combustible Solids
• Classe di pericolosità dell'acqua (WGK): WGK 1
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable