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人 Nicastrin/NCSTN 基因ORF全长cDNA克隆(表达载体), N-HA 标签

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Human NCSTN cDNA Clone产品信息
NCBI注册码:NM_015331.2
参考序列ORF长度:2130bp
cDNA基因描述:Full length Clone DNA of Homo sapiens nicastrin with N terminal HA tag.
分子别称:APH2, KIAA0253, RP11-517F10.1, NCSTN
分子种属:Human
载体:pCMV3-SP-N-HA
质粒:
限制性酶切位点:
Tag序列:HA Tag Sequence: TATCCTTACGACGTGCCTGACTACGCC
序列信息:
测序引物:T7(TAATACGACTCACTATAGGG) BGH(TAGAAGGCACAGTCGAGG)
启动子:Enhanced CMV mammalian cell promoter
Application:Stable or Transient mammalian expression
抗生素(大肠杆菌):Kanamycin
抗生素(哺乳动物细胞):Hygromycin
运输方式:Each tube contains lyophilized plasmid.
储存方法:The lyophilized plasmid can be stored at room temperature for three months.
HA Tag Info

Human influenza hemagglutinin (HA) is a surface glycoprotein required for the infectivity of the human virus. The HA tag is derived from the HA-molecule corresponding to amino acids 98-106 has been extensively used as a general epitope tag in expression vectors. Many recombinant proteins have been engineered to express the HA tag, which does not appear to interfere with the bioactivity or the biodistribution of the recombinant protein. This tag facilitates the detection, isolation, and purification of the proteins.

The actual HA tag is as follows: 5' TAC CCA TAC GAT GTT CCA GAT TAC GCT 3' or 5' TAT CCA TAT GAT GTT CCA GAT TAT GCT 3' The amino acid sequence is: YPYDVPDYA.

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研究背景

Nicastrin (NCST, or NCT), a single-pass membrane glycoprotein that harbors a large extracellular domain, is an essential component of the gamma-secretase complex. Several lines of evidence indicate that the members of these complexes could also contribute to the control of cell death. NCT controls cell death via phosphoinositide 3-kinase/Akt and p53-dependent pathways and that this function remains independent of the activity and molecular integrity of the gamma-secretase complexes. Increasing evidences have shown that Nicastrin/NCSTN plays a crucial role in gamma-cleavage of the amyloid precursor protein (APP). The glycoprotein Nicastrin is an essential component of the gamma-secretase complex, a high molecular weight complex which also contains the presenilin proteins, Aph-1 and Pen-2. The gamma-secretase complex is not only involved in APP processing but also in the processing of an increasing number of other type I integral membrane proteins. As the largest subunit of the gamma-secretase complex, Nicastrin plays a crucial role in its activation. Inhibition of NCSTN demonstrated an altered gamma-cleavage activity, suggesting its potential implication in developing Alzheimer's disease (AD). In addition, Nicastrin can function to maintain epithelial to mesenchymal transition during breast cancer progression. Anti-nicastrin polyclonal and monoclonal antibodies were able to decrease notch1 and vimentin expression and reduced the invasive capacity of breast cancer cells in vitro.

参考资料
  • He G, et al. (2007) Degradation of nicastrin involves both proteasome and lysosome. J Neurochem. 101(4): 982-92.
  • Hayashi I, et al. (2009) Single chain variable fragment against nicastrin inhibits the gamma-secretase activity. J Biol Chem. 284(41): 27838-47.
  • Ma Z, et al. (2009) Association between promoter polymorphisms of the nicastrin gene and sporadic Alzheimer's disease in North Chinese Han population. Neurosci Lett. 458(3): 136-9.
  • Pardossi-Piquard R, et al. (2009) p53-dependent control of cell death by nicastrin: lack of requirement for presenilin-dependent gamma-secretase complex. J Neurochem. 109(1): 225-37.
  • Filipovi? A, et al. (2011) Biological and clinical implications of nicastrin expression in invasive breast cancer. Breast Cancer Res Treat. 125(1): 43-53.
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    货号: HG11183-NY
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