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Merck
CN

C1907

钙调磷酸酶 来源于牛大脑

lyophilized powder, ≥2,500 units/mg protein

别名:

PP2B, 磷蛋白磷酸水解酶, 蛋白磷酸酶 2B, 调节因子结合蛋白, 钙/钙调素活化的蛋白磷酸酶, 钙调素结合蛋白

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关于此项目

化学文摘社编号:
UNSPSC Code:
51111800
NACRES:
NA.32
MDL number:
Specific activity:
≥2,500 units/mg protein
Biological source:
bovine
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biological source

bovine

Quality Level

form

lyophilized powder

specific activity

≥2,500 units/mg protein

mol wt

dimer ~77 kDa, subunit mol wt 19-58 kDa

composition

Protein, 0.3-1.7% Lowry

solubility

H2O: soluble

UniProt accession no.

storage temp.

−20°C

Gene Information

General description

Calcineurin (CaN) comprises CaN A and CaN B subunits. It exists as a heterodimer with a calmodulin-binding domain, catalytic site, a CaN B binding domain, and an autoinhibitory domain.

Application

Calcineurin from bovine brain has been used:
  • as a positive control in western blot analysis of oocytes and cumulus cells proteome
  • as a positive control in calmodulin (CaM)-agarose binding assay
  • to test its phosphatase activity in the presence of okadaic acid

Biochem/physiol Actions

大脑中发现的主要钙调素结合蛋白。与 T 细胞活化和阿尔茨海默病中 τ 蛋白的过磷酸化有关的关键酶。
钙调磷酸酶是一种环孢菌素敏感、钙调节的丝氨酸-苏氨酸蛋白质磷酸酶,具有较广的底物特异性。它是大脑中发现的主要钙调素结合蛋白。最早鉴定为一种磷酸二酯酶 3′:5′ 环核苷酸 (PDE) 的钙调素活化抑制剂,钙调磷酸酶对腺苷酸环化酶具有类似的作用。是与 T 细胞活化相关的关键酶。也与阿尔茨海默病中 τ 蛋白的过磷酸化有关,并且已显示出可阻碍分化型 PC12 细胞中 τ 蛋白进行钙蛋白酶介导的蛋白质水解的特性。
Calcineurin (CaN) activity is stimulated by nickel (Ni2+) and manganese (Mn2+) ions. It participates in the coupling of Ca2+ signals. CaN may regulate oocyte growth and meiotic maturation in porcine. It also participates in gene regulation, cell survival, and death.

Physical form

冻干粉,含 0.5% EGTA,缓冲盐及稳定剂。

Analysis Note

Sigma 在含 65mM KCl、8mM MgSO4 以及 0.3% 白蛋白且 pH 为 7.5 的 80mM Tris 中测试了其活性。

Other Notes

当与两单位活化剂 (P 2277) 以及 0.1mM Ca2+ 置于酶偶联系统中分析时,在 pH 7.5 和 30°C 下,一单位本品可以对活化的磷酸二酯酶 3′:5′-环核苷酸 (P 9529) 造成 50% 的抑制。


存储类别

11 - Combustible Solids

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves

法规信息

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H Q Xie et al.
Journal of neuroscience research, 53(2), 153-164 (1998-07-22)
The effects of calcium influx on tau levels and phosphorylation were examined in differentiated PC12 cells. Maitotoxin-induced calcium influx resulted in time- and concentration-dependent tau dephosphorylation and degradation. Incubation of PC12 cells with a membrane-permeable calpain inhibitor blocked maitotoxin-induced tau
Lenka Tůmová et al.
Animal reproduction science, 141(3-4), 154-163 (2013-08-27)
The processes of oocyte growth, acquisition of meiotic competence and meiotic maturation are regulated by a large number of molecules. One of them could be calcineurin consisting of catalytic subunit A (Aα, Aβ, Aγ isoforms) and regulatory subunit B (B1
C B Klee et al.
Biochemistry, 17(1), 120-126 (1978-01-10)
The Ca2+-dependent, reversible, interaction of cyclic adenosine 3',5'-monophosphate (cAMP) phosphodiesterase with its activator has been used to purify the enzyme by affinity chromatography. Activator-dependent cAMP phosphodiesterase is only a minor component of the proteins specifically adsorbed in the presence of



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货号GTIN
C1907-100UN04061833628997