Recombinant Human CD4 / LEU3 Protein (aa 1-208, His tag)
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Catalog numberPKSH031631-50µg
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PricePlease ask
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Size50µg
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SynonymCD4mut
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ActivityMeasured by its ability to bind biotinylated GP140-His in a functional ELISA.2. Measured by the ability of the immobilized protein to support the adhesion of HeLa human cervical epithelial carcinoma cells. When 5 x 10E4 cells/well are added to CD4-coated plates (2.5 μg/ml and 100 μl/well), approximately 40 %-60 % will adhere specifically after 60 minutes at 37℃.
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SequenceMet 1-Ser 208
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Fusion tagC-His
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AccessionNP_000607.1
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Expressed HostHEK293 Cells
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ShippingIn general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
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Purity＞94 % as determined by SDS-PAGE
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Endotoxin＜1.0 EU per µg as determined by the LAL method
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Stability and StorageSamples are stable for up to twelve months from date of receipt at -70℃.Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
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Mol Mass21.7 kDa
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AP Mol Mass26 kDa
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FormulationLyophilized from sterile PBS, pH 7.4
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BackgroundT-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.
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DescriptionCD4+ T helper cell marker or cluster differentiator of white blood cells in FACS or flow cytometry. Used offer coupled to magnetic beads. GENTAUR makes custom magnetic bead couplings on 50 and 250 nm beads for certain clones.
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Conjugationhistidine
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PropertiesHuman proteins, cDNA and human recombinants are used in human reactive ELISA kits and to produce anti-human mono and polyclonal antibodies. Modern humans (Homo sapiens, primarily ssp. Homo sapiens sapiens). Depending on the epitopes used human ELISA kits can be cross reactive to many other species. Mainly analyzed are human serum, plasma, urine, saliva, human cell culture supernatants and biological samples.
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SourceRecombinants or rec. proteins
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Grouprecombinants
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Gene target
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Gene symbolCD4, OR1P1, MIR208A, IGHVII-1-1, MIR1-1, TRUND-NNN8-1, TRUND-NNN7-1, IGKV1OR2-1, MIR101-1, MIR1289-1
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Short nameRecombinant CD4 / LEU3 Protein (aa 1-208, His tag)
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TechniqueRecombinant, E. coli recombinant proteins are genetic recombinations in Escherichia coli, supplied as white sterile powder lyopillized. Elabscience advises they will be reconstituted in a buffer soluion or culture medium for cell culture. Tags
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LabelHis
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SpeciesHuman, Humans
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Alternative nameRec. H. sapiens CD4 molecule / LEU3 Protein (aa 1-208, histidine detection labelled)
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Alternative techniquerec
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Alternative to gene targetCD4 molecule, CD4mut, CD4 and IDBG-15034 and ENSG00000010610 and 920, protein homodimerization activity, Cell surfaces, Cd4 and IDBG-188351 and ENSMUSG00000023274 and 12504, CD4 and IDBG-640247 and ENSBTAG00000003255 and 407098
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Gene info
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Identity
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Gene
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Long gene nameCD4 molecule
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Synonyms gene name
- CD4 antigen (p55)
- T-cell surface glycoprotein CD4
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GenBank acession
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Locus
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Discovery year1986-01-01
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Entrez gene record
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RefSeq identity
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Classification
- CD molecules
- C2-set domain containing
- V-set domain containing
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VEGA ID
Gene info
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Identity
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Gene
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Long gene nameolfactory receptor family 1 subfamily P member 1 (gene/pseudogene)
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Synonyms gene
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Synonyms gene name
- olfactory receptor, family 1, subfamily P, member 1 pseudogene
- olfactory receptor, family 1, subfamily P, member 1 (gene/pseudogene)
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Synonyms
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GenBank acession
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Locus
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Discovery year1998-09-14
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Entrez gene record
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Pubmed identfication
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RefSeq identity
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Classification
- Olfactory receptors, family 1
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VEGA ID
Gene info
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Identity
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Gene
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Long gene namemicroRNA 208a
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Synonyms gene
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Synonyms gene name
- microRNA 208
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Synonyms
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Locus
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Discovery year2004-04-23
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Entrez gene record
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RefSeq identity
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Classification
- MicroRNA MIR208 family
Gene info
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Identity
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Gene
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Long gene nameimmunoglobulin heavy variable (II)-1-1 (pseudogene)
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Synonyms gene name
- immunoglobulin heavy variable (II)-1-1
- immunoglobulin heavy variable (II)-1-1 pseudogene
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Synonyms
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GenBank acession
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Locus
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Discovery year2000-04-17
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Entrez gene record
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RefSeq identity
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Classification
- Immunoglobulin heavy locus at 14q32.33
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VEGA ID
Gene info
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Identity
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Gene
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Long gene namemicroRNA 1-1
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Synonyms gene
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Synonyms
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Locus
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Discovery year2004-04-23
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Entrez gene record
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RefSeq identity
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Classification
- MicroRNA MIR1/206 family
Gene info
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Identity
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Gene
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Long gene nametRNA-undetermined (NNN) 8-1
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Synonyms gene name
- transfer RNA-undetermined (NNN) 8-1
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GenBank acession
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Locus
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Discovery year2014-06-20
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Entrez gene record
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Pubmed identfication
Gene info
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Identity
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Gene
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Long gene nametRNA-undetermined (NNN) 7-1
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Synonyms gene name
- transfer RNA-undetermined (NNN) 7-1
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GenBank acession
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Locus
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Discovery year2014-06-20
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Entrez gene record
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Pubmed identfication
Gene info
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Identity
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Gene
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Long gene nameimmunoglobulin kappa variable 1/OR2-1 (pseudogene)
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Synonyms gene
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Synonyms gene name
- immunoglobulin kappa variable 1/OR-1
- immunoglobulin kappa variable 1/OR-1 pseudogene
- immunoglobulin kappa variable 1/OR-1 (pseudogene)
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Synonyms
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GenBank acession
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Locus
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Discovery year2000-04-18
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Entrez gene record
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Pubmed identfication
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Classification
- Immunoglobulin kappa (IGK) orphons
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VEGA ID
Gene info
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Identity
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Gene
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Long gene namemicroRNA 101-1
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Synonyms gene
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Synonyms
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Locus
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Discovery year2004-04-23
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Entrez gene record
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RefSeq identity
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Classification
- MicroRNA MIR101 family
Gene info
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Identity
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Gene
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Long gene namemicroRNA 1289-1
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Synonyms gene
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Synonyms
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Locus
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Discovery year2008-11-03
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Entrez gene record
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RefSeq identity
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Classification
- MicroRNA MIR1289 family
MeSH Data
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Name
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ConceptScope note: The number of CD4-POSITIVE T-LYMPHOCYTES per unit volume of BLOOD. Determination requires the use of a fluorescence-activated flow cytometer.
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Tree numbers
- E01.370.225.500.195.107.595.500.150
- E01.370.225.625.107.595.500.150
- E05.200.500.195.107.595.500.150
- E05.200.625.107.595.500.150
- E05.242.195.107.595.500.150
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Qualifiersethics, trends, veterinary, history, classification, economics, instrumentation, methods, standards, statistics & numerical data
