β amyloid (1 40)

Amyloid β1-40 is one of the fragments generated after cleavage of the amyloid peptide precursor protein by β and γ secretases.

β-Amyloid (1-40), FAM-labeled is a FAM fluorescently-labelled β-Amyloid (1-40) peptide (λ ex = 492 nm and λ em = 518 nm).

Biotin-β-Amyloid (1-40) is a N-terminal-labelled biotinylated amyloid- -(1-40) peptide.

β-Amyloid (1-40), FAM-labeled TFA 是一个 FAM 荧光标记的 β-Amyloid (1-40) 肽 (λex=?492?nm and λem=?518?nm)。

[Asn23] β-Amyloid (1-40), Iowa mutation 是一种与重度大脑淀粉样蛋白血管病 (CAA) 相关的生物活性肽。该突变涉及 APP 694 位点的错义突变，Asp 23 位置的天冬酰胺被天冬酰氨酸取代。这种变异的 β-Amyloid 肽倾向于更快聚集，并形成有害的原纤维。

[Arg6]-β-Amyloid (1-40), England mutation 是具有生物活性的肽，与多种家族性常染色体显性阿尔茨海默病相关。特别地，这种英国突变，即位于第6位的His被Arg所替换，已报告可提高寡聚体形成动力学，加速初级纤维的种子化过程。此类寡聚体对神经元培养细胞展现出较高毒性。

β-Amyloid (1-40) TFA 是阿尔茨海默症患者脑斑块中的主要蛋白片段，常用于构建阿尔茨海默症模型。

(Gln22,Asn23)-Amyloid β-Protein (1-40) 为特定多肽，主要应用于研究脑淀粉样血管病的相关突变。

(Gly22)-amyloid beta-protein(1-40) (Arctic variant Ab40ARC (E22G)) 是用于阿尔茨海默病研究的肽。

Rat form of the beta-Amyloid (1-40) peptide

Aftin-4 是一种 β-淀粉样蛋白42(Aβ42) 的诱导剂。

4-(6-Bromo-2-benzothiazolyl)-N-methylbenzenamine is a potent amyloid imaging agent that binds to Amyloid-β (1-40) (KD: 1.7 nM).

γ-Secretase-IN-1 是一种高效的 γ-secretase 抑制剂，对T-47D 细胞显示部分抗增殖活性且抑制 β-amyloid(40)，β-amyloid(42)，和Notch γ-分泌酶裂解。

Pramlintide is a non-amyloidogenic analog of the antidiabetic peptide hormone amylin that contains proline residues substituted at positions 25, 28, and 29. It stimulates cAMP production in HEK293 cells expressing human amylin receptor 1a (AMY1a), AMY2a, and AMY3a (EC50s = 0.35, 22.9, and 0.89 nM, respectively). Pramlintide inhibits human islet amyloid polypeptide fibrilization in a concentration-dependent manner. In vivo, pramlintide (200 pg/kg) reduces brain levels of amyloid-β (1-40) and increases spontaneous alternation in the Y-maze in the Tg2576 transgenic mouse model of Alzheimer's disease.

Amyloid-β (1-8, A2V) is a truncated form of amyloid-β (Aβ) that contains a valine to alanine substitution at position 2 of the Aβ numbering convention (Aβ A2V), which corresponds to position 673 of the amyloid precursor protein (APP) numbering convention (APP A673V). An Aβ (1-40) (Aβ40) A2V peptide increases the production of Aβ and the rate and amount of amyloid fibril formation in vitro, effects that can be reduced by coincubation with wild-type Aβ40. Aβ40 and Aβ42 levels are increased in CHO cells expressing the Aβ A2V mutation and in fibroblasts derived from patients with the Aβ A2V mutation. As a homozygous mutation, Aβ A2V is correlated with Alzheimer's disease with distinctive pathological features, but disease does not develop in patients with a heterozygous Aβ A2V mutation.

Amyloid-β (25-35) (Aβ (25-35)) is an 11-residue fragment of the Aβ protein that retains the physical and biological characteristics of the full length peptide. It forms fibrils that react to thioflavin T and Congo red and are organized in a cross-β arrangement of β-strands similar to Aβ (1-40) and Aβ (1-42) fibrils. Aggregated Aβ (25-35) decreases the viability of rat adrenal PC12 cells. It also decreases the viability of primary rat cortical neurons at concentrations ranging from 1 nM to 30 μM. In vivo, intracerebral injection of Aβ (25-35) (20 nmol) in rats induces lesions of neuronal and tissue loss. Aggregated Aβ (25-35) administered intracerebroventricularly to rats induces learning and memory impairments in the Y-maze, novel object recognition, and contextual fear conditioning tests.

Glycerophosphorylethanolamine is an active phosphodiester metabolite of phosphatidylethanolamine.1,2It promotes aggregation of amyloid-β (1-40) (Aβ40)in vitro, and levels of glycerophosphorylethanolamine are elevated in postmortem brains isolated from patients with Alzheimer’s disease. 1.Klunk, W.E., Xu, C.J., McClure, R.J., et al.Aggregation of β-amyloid peptide is promoted by membrane phospholipid metabolites elevated in Alzheimer’s disease brainJ. Neurochem.69(1)266-272(1997) 2.Blusztajn, J.K., Lopez Gonzalez-Coviella, I., Logue, M., et al.Levels of phospholipid catabolic intermediates, glycerophosphocholine and glycerophosphoethanolamine, are elevated in brains of Alzheimer’s disease but not of Down’s syndrome patientsBrain Res.536(1-2)240-244(1990)

Biotin-β-Amyloid (17-40) 是 N 端标记的生物素化的β-Amyloid (17-40) 肽段。该化合物为 Aβ 蛋白中的 24 个氨基酸残基构成的片段，源自于淀粉样前体蛋白(APP)的翻译及加工过程。

Biotinyl-Amyloid β-Protein (1-42) ammonium 是一种生物素化的 Amyloid β-Protein (1-42). Amyloid β-Protein (1-42) ammonium 可用于 Aβ1-42 在大脑中转化为 Aβ1-40 的研究。

Acetly-β Amyloid (15-20), Amide 为多肽片段，具有抑制 Aβ (1–40) 肽β-折叠形成并稳定其结构的功能，适用于阿尔茨海默病的相关研究。

(Pyr11)-Amyloid β-Protein (11-40) (A beta 11pE-40) 作为一种肽， 主要应用于阿尔茨海默病相关研究。

CS-6253TFA为CS-6253的TFA盐类,具有作用于ATP结合盒1 (ABCA1) 的激动剂功能.该化合物能有效调节淀粉样蛋白β的Aβ42 40比率,对血浆中的脂蛋白代谢产生影响.此外,CS-6253 TFA能够促进富含胆固醇的高密度脂蛋白(HDL)颗粒的产生,并触发微粒的释放.

β-Amyloid (17-40) (Aβ(17-40)) 是一种Amyloid-β多肽的片段，在SH-SY5Y和IMR-32细胞中展现了其神经毒性活性。此化合物适用于神经系统疾病相关研究。