CD4, Human, 重组蛋白 (aa 1-208, His) TMPY-02116
品牌 | 厂商性质 | 产地 | 货期 |
---|---|---|---|
TargetMol | 生产商 | 美国 | 现货 |
性能特点
生化试剂,可用于动物细胞实验
规格 | 价格 | 操作 |
---|---|---|
100 μg | ¥3,820.00 | 询底价 |
Product Introduction
Bioactivity
英文名: CD4 Protein, Human, Recombinant (aa 1-208, His)
描述: 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.
存储条件: Lyophilized powder: -20~-80°C for 1 year | Solution: -80°C for 6~12 month
CD4, Human, 重组蛋白 (aa 1-208, His) TMPY-02116信息由TargetMol中国为您提供,如您想了解更多关于CD4, Human, 重组蛋白 (aa 1-208, His) TMPY-02116报价、型号、参数等信息,欢迎来电或留言咨询。
注:该产品未在中华人民共和国食品药品监督管理部门申请医疗器械注册和备案,不可用于临床诊断或治疗等相关用途