CD4 cDNA ORF Clone, Rat, N-Myc tag

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CD4 cDNA ORF Clone, Rat, N-Myc tag: 製品情報

遺伝子
Rat
NCBI 参考シーケンス番号
遺伝子の長さ
1374 bp
製品の特徴
Full length Clone DNA of Rat Cd4 molecule with N terminal Myc tag.
プラスミド
プロモーター
Enhanced CMV promoter
ベクター
タグシーケンス
Myc Tag Sequence: GAGCAGAAACTCATCTCAGAAGAGGATCTG
シークエンシングプライマー
T7( 5' TAATACGACTCACTATAGGG 3' )
BGH( 5' TAGAAGGCACAGTCGAGG 3' )
品質管理
The plasmid is confirmed by full-length sequencing.
スクリーニング
細菌スクリーニング抵抗力
Kanamycin
細胞スクリーニング抵抗力
Hygromycin
アプリケーション
Stable or Transient mammalian expression
保存 & 配送
配送方法
Each tube contains lyophilized plasmid.
保存条件
The lyophilized plasmid can be stored at ambient temperature for three months.

CD4 背景情報

T-cell surface glycoprotein CD4, is a single-pass type I membrane protein. CD4 contains three Ig-like C2-type (immunoglobulin-like) domains and one Ig-like V-type (immunoglobulin-like) domain. CD4 is a glycoprotein expressed on the surface of T helper cells, regulatory T cells, monocytes, macrophages, and dendritic cells. The CD4 surface determinant, previously associated as a phenotypic marker for helper/inducer subsets of T lymphocytes, has now been critically identified as the binding/entry protein for human immunodeficiency viruses (HIV). The human CD4 molecule is readily detectable on monocytes, T lymphocytes, and brain tissues. All human tissue sources of CD4 bind radiolabeled gp120 to the same relative degree; however, the murine homologous protein, L3T4, does not bind the HIV envelope protein. CD4 is a co-receptor that assists the T cell receptor (TCR) to activate its T cell following an interaction with an antigen-presenting cell. Using its portion that resides inside the T cell, CD4 amplifies the signal generated by the TCR. CD4 interacts directly with MHC class II molecules on the surface of the antigen-presenting cell via its extracellular domain. The CD4 molecule is currently the object of intense interest and investigation both because of its role in normal T-cell function, and because of its role in HIV infection. CD4 is a primary receptor used by HIV-1 to gain entry into host T cells. HIV infection leads to a progressive reduction of the number of T cells possessing CD4 receptors.

Viral protein U (VpU) of HIV-1 plays an important role in downregulation of the main HIV-1 receptor CD4 from the surface of infected cells. Physical binding of VpU to newly synthesized CD4 in the endoplasmic reticulum is an early step in a pathway leading to proteasomal degradation of CD4. Amino acids in both helices found in the cytoplasmic region of VpU in membrane-mimicking detergent micelles experience chemical shift perturbations upon binding to CD4, whereas amino acids between the two helices and at the C-terminus of VpU show no or only small changes, respectively. Paramagnetic spin labels were attached at three sequence positions of a CD4 peptide comprising the transmembrane and cytosolic domains of the receptor. VpU binds to a membrane-proximal region in the cytoplasmic domain of CD4.
完全な名称
CD4 molecule
Related Pathways
  • NF-kB (NFkB) Pathway
    NF-kB (NFkB) Pathway
  • T Cell Receptor Signaling Pathway
    T Cell Receptor Signaling Pathway
参考文献
  • Farrar WL, et al. (1988) Characterization of CD4 glycoprotein determinant-HIV envelope protein interactions: perspectives for analog and vaccine development. Crit Rev Immunol. 8(4): 315-39.
  • Biddison WE, et al. (1989) CD4 expression and function in HLA class II-specific T cells. Immunol Rev. 109: 5-15.
  • Singh SK, et al. (2012) Mapping the interaction between the cytoplasmic domains of HIV-1 viral protein U and human CD4 with NMR spectroscopy. FEBS J. 279(19):3705-14.
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