NKG2A-CD94 Heterodimer Protein, Mouse (HEK293, mFc)
Based on 1 Customer Validation
NKG2A Protein, a crucial immune inhibitory receptor, forms a complex with KLRD1 on lymphocyte subsets for self-nonself discrimination. Recognizing HLA-E loaded with self-peptides, it monitors MHC class I expression in healthy cells, promoting self-tolerance. NKG2A transmits signals through ITIMs, recruiting tyrosine phosphatases to counteractivate receptors. As a key inhibitor on NK cells, it regulates their functions, distinguishing harmless from pathogenic antigens. In the tumor microenvironment, NKG2A acts as an immune inhibitory checkpoint, contributing to cell exhaustion. During viral infection, it inhibits NK cell cytotoxicity, facilitating viral immune escape. NKG2A-CD94 Heterodimer Protein, Mouse (HEK293, mFc) is a recombinant protein dimer complex containing mouse-derived NKG2A-CD94 Heterodimer protein, expressed by HEK293 , with C-mFc labeled tag. NKG2A-CD94 Heterodimer Protein, Mouse (HEK293, mFc), has molecular weight of 58-68 kDa.
- Species: Mouse
- Source: HEK293
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Storage:Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.
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Tel: 609-228-6898 E-mail: [email protected] [email protected]
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Biological Activity
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Technical Parameters
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Product Properties
- Documentation
- References
- Help & FAQs
Biological Activity
Description
NKG2A Protein, a crucial immune inhibitory receptor, forms a complex with KLRD1 on lymphocyte subsets for self-nonself discrimination. Recognizing HLA-E loaded with self-peptides, it monitors MHC class I expression in healthy cells, promoting self-tolerance. NKG2A transmits signals through ITIMs, recruiting tyrosine phosphatases to counteractivate receptors. As a key inhibitor on NK cells, it regulates their functions, distinguishing harmless from pathogenic antigens. In the tumor microenvironment, NKG2A acts as an immune inhibitory checkpoint, contributing to cell exhaustion. During viral infection, it inhibits NK cell cytotoxicity, facilitating viral immune escape. NKG2A-CD94 Heterodimer Protein, Mouse (HEK293, mFc) is a recombinant protein dimer complex containing mouse-derived NKG2A-CD94 Heterodimer protein, expressed by HEK293 , with C-mFc labeled tag. NKG2A-CD94 Heterodimer Protein, Mouse (HEK293, mFc), has molecular weight of 58-68 kDa.
Background
NKG2A, an immune inhibitory receptor crucial for self-nonself discrimination, forms a complex with KLRD1 on cytotoxic and regulatory lymphocyte subsets, recognizing the non-classical major histocompatibility (MHC) class Ib molecule HLA-E loaded with self-peptides from the signal sequence of classical MHC class Ia molecules. This recognition allows cytotoxic cells to monitor MHC class I expression in healthy cells and promotes self-tolerance. Upon binding to HLA-E-peptide complexes, NKG2A transmits intracellular signals through two immunoreceptor tyrosine-based inhibition motifs (ITIMs), recruiting INPP5D/SHP-1 and INPPL1/SHP-2 tyrosine phosphatases to oppose signals from activating receptors. As a key inhibitory receptor on natural killer (NK) cells, NKG2A regulates their activation and effector functions, countering T cell receptor signaling on a subset of memory/effector CD8-positive T cells and distinguishing harmless from pathogenic antigens. In the HLA-E-rich tumor microenvironment, NKG2A acts as an immune inhibitory checkpoint, contributing to the progressive loss of effector functions in NK cells and tumor-specific T cells, a phenomenon known as cell exhaustion. Notably, during viral infection, NKG2A recognizes HLA-E in complex with human cytomegalovirus-derived peptides, inhibiting NK cell cytotoxicity and facilitating viral immune escape[1][2][3][4].
Technical Parameters
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Species Mouse
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Source HEK293
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Tag C-mFc
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Synonyms
KLRC1; NKG2-A/B-Activating NK Receptor; Prev. NKG2; NKG2-B; NKG2-A; NKG2A; CD159a; NKG2-A/B Type II Integral Membrane Protein; Killer Cell Lectin-Like Receptor Subfamily C, Member 1; Natural Killer Group Protein 2; NKG2-A/NKG2-B Type II Integral Membrane
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Predicted Molecular Mass
18.3 kDa (CD94) & 43.1 kDa (NKG2A)
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Molecular Weight
Approximately 60-70 kDa, based on SDS-PAGE under reducing conditions, due to the glycosylation.
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Glycosylation
Yes
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Purity
≥ 95%, as determined by Bis-Tris PAGE.
Product Properties
Lyophilized powder.
Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.4, 8% trehalose.
<1 EU/μg, determined by LAL method.
It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH2O.
Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.
Room temperature in continental US; may vary elsewhere.
Documentation
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Data Sheet (262 KB)
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SDS (251 KB)
- English - EN (251 KB)
- Français - FR (251 KB)
- Deutsch - DE (251 KB)
- Norwegian - NO (251 KB)
- Español - ES (251 KB)
- Swedish - SV (251 KB)
- Italian - IT (251 KB)
- Korean - KR (251 KB)
- Portuguese - PT (251 KB)
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Handling Instructions (2659 KB)
References
[1]. Braud VM, et al. HLA-E binds to natural killer cell receptors CD94/NKG2A, B and C. Nature. 1998 Feb 19;391(6669):795-9. [Content Brief]
[2]. Kabat J, et al. Role that each NKG2A immunoreceptor tyrosine-based inhibitory motif plays in mediating the human CD94/NKG2A inhibitory signal. J Immunol. 2002 Aug 15;169(4):1948-58. [Content Brief]
[3]. Jabri B, et al. TCR specificity dictates CD94/NKG2A expression by human CTL. Immunity. 2002 Oct;17(4):487-99. [Content Brief]
[4]. Kamiya T, et al. Blocking expression of inhibitory receptor NKG2A overcomes tumor resistance to NK cells. J Clin Invest. 2019 Mar 12;129(5):2094-2106. [Content Brief]
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
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