| Host: |
HEK293 |
| Note: |
STRICTLY FOR FURTHER RESEARCH USE ONLY (RUO). MUST NOT TO BE USED IN DIAGNOSTIC OR THERAPEUTIC APPLICATIONS. |
| Short Description: |
Recombinant-Human NKG2A/CD159a-N-His-Avi protein was developed from hek293 and has a target region of N-His-Avi. For use in research applications. |
| Conjugation: |
Biotin |
| Formulation: |
Lyophilised from 0.2 µm filtered PBS solution pH7.4. |
| Dilution Range: |
Upon receipt centrifuge vial to ensure maximal product extraction, recommended: 20sec, 5K RPM |
| Storage Instruction: |
The lyophilized protein is stable for at least 1 year from date of receipt at-20°C. |
| Endotoxin: |
Endotoxin content was assayed using a LAL gel clot method. Endotoxin level was found to be less than 0.1 ng/µg (1EU/µg). |
| Gene Symbol: |
KLRC1 |
| Gene ID: |
3821 |
| Uniprot ID: |
NKG2A_HUMAN |
| Immunogen Region: |
Arg100-Leu233 |
| Immunogen: |
DNA sequence encoding Human NKG2A/CD159a including a N-His-Avi tag was expressed in HEK293 Cells. The recombinant protein was then biotinylated site specific using the AVItag biotinylation technology. |
| Post Translational Modifications | Phosphorylated. |
| Function | Immune inhibitory receptor involved in self-nonself discrimination. In complex with KLRD1 on cytotoxic and regulatory lymphocyte subsets, recognizes non-classical major histocompatibility (MHC) class Ib molecule HLA-E loaded with self-peptides derived from the signal sequence of classical MHC class Ia molecules. Enables cytotoxic cells to monitor the expression of MHC class I molecules in healthy cells and to tolerate self. Upon HLA-E-peptide binding, transmits intracellular signals through two immunoreceptor tyrosine-based inhibition motifs (ITIMs) by recruiting INPP5D/SHP-1 and INPPL1/SHP-2 tyrosine phosphatases to ITIMs, and ultimately opposing signals transmitted by activating receptors through dephosphorylation of proximal signaling molecules. Key inhibitory receptor on natural killer (NK) cells that regulates their activation and effector functions. Dominantly counteracts T cell receptor signaling on a subset of memory/effector CD8-positive T cells as part of an antigen-driven response to avoid autoimmunity. On intraepithelial CD8-positive gamma-delta regulatory T cells triggers TGFB1 secretion, which in turn limits the cytotoxic programming of intraepithelial CD8-positive alpha-beta T cells, distinguishing harmless from pathogenic antigens. In HLA-E-rich tumor microenvironment, acts as an immune inhibitory checkpoint and may contribute to progressive loss of effector functions of NK cells and tumor-specific T cells, a state known as cell exhaustion. (Microbial infection) Viruses like human cytomegalovirus have evolved an escape mechanism whereby virus-induced down-regulation of host MHC class I molecules is coupled to the binding of viral peptides to HLA-E, restoring HLA-E expression and inducing HLA-E-dependent NK cell immune tolerance to infected cells. Recognizes HLA-E in complex with human cytomegalovirus UL40-derived peptide (VMAPRTLIL) and inhibits NK cell cytotoxicity. (Microbial infection) May recognize HLA-E in complex with HIV-1 gag/Capsid protein p24-derived peptide (AISPRTLNA) on infected cells and may inhibit NK cell cytotoxicity, a mechanism that allows HIV-1 to escape immune recognition. (Microbial infection) Upon SARS-CoV-2 infection, may contribute to functional exhaustion of cytotoxic NK cells and CD8-positive T cells. On NK cells, may recognize HLA-E in complex with SARS-CoV-2 S/Spike protein S1-derived peptide (LQPRTFLL) expressed on the surface of lung epithelial cells, inducing NK cell exhaustion and dampening antiviral immune surveillance. |
| Protein Name | Nkg2-A/Nkg2-B Type Ii Integral Membrane ProteinCd159 Antigen-Like Family Member ANk Cell Receptor ANkg2-A/B-Activating Nk ReceptorCd Antigen Cd159a |
| Database Links | Reactome: R-HSA-198933 |
| Cellular Localisation | Cell MembraneSingle-Pass Type Ii Membrane Protein |
| Alternative Protein Names | Nkg2-A/Nkg2-B Type Ii Integral Membrane Protein proteinCd159 Antigen-Like Family Member A proteinNk Cell Receptor A proteinNkg2-A/B-Activating Nk Receptor proteinCd Antigen Cd159a proteinKLRC1 proteinNKG2A protein |
Information sourced from Uniprot.org
12 months for antibodies. 6 months for ELISA Kits. Please see website T&Cs for further guidance
