Mouse CD4 Protein, His Tag, Avi Tag_天津卡梅德科技发展有限公司

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Mouse CD4 Protein, His Tag, Avi Tag

Mouse CD4 Protein, His Tag, Avi Tag

产品编号

KMP3851

别名

T细胞表面糖蛋白CD4, CD4 Protein, Mouse CD4 Protein, His Tag, Avi Tag

规格

50ug
100ug
200ug

DATASHEET MSDS

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产品介绍

Alias	T细胞表面糖蛋白CD4, CD4 Protein, Mouse CD4 Protein, His Tag, Avi Tag
Catalog Number	KMP3851
Product Description	The Mouse CD4 Protein(KMP3851) is produced in HEK293 Cells. A DNA sequence encoding the Mouse CD4 (NP_038516.1) (Met1-Thr394) is expressed with a C-terminal polyhistidine tag followed by an Avi tag. The expressed protein is biotinylated in vivo by the Biotin-Protein ligase (BirA enzyme) which is co-expressed.
Molecular Name	CD4
Species	Mouse
Host	HEK293 Cells
Size	50ug, 100ug, 200ug
Purity	>95% as determined by SDS-PAGE
Purification	Affinity purification
Endotoxin	<1.0 EU/ug determined by the LAL method
Formulation	PBS, pH7.4
Background	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.
Storage Condition	Aliquot and store at -20℃ to -80℃. Avoid repeated freezing and thawing cycles.
Shipping Condition	In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature. If supplied as liquid, the proteins will be shipped with dry ice.
Molecular Weight	44.51 kDa

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