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Background
Leukocyte-associated immunoglobulin-like receptor-1 (LAIR-1) is constitutively expressed on the majority of human peripheral blood mononuclear leukocytes. LAIR-1 or CD305 is a transmembrane glycoprotein with a single immunoglobulin-like domain and a cytoplasmic tail containing two immune receptor tyrosine-based inhibitory motifs. LAIR-1 recruits SHP-1 and SHP-2 phosphatases upon activation, and cross-linking of the LAIR-1 antigen on natural killer (NK) cells results in strong inhibition of NK cell–mediated cytotoxicity. Functions as an inhibitory receptor that plays a constitutive negative regulatory role on cytolytic function of natural killer (NK) cells, B-cells and T-cells. Activation by Tyr phosphorylation results in recruitment and activation of the phosphatases PTPN6 and PTPN11. It also reduces the increase of intracellular calcium evoked by B-cell receptor ligation.Diseases associated with LAIR1 include Chronic Active Epstein-Barr Virus Infection and Palindromic Rheumatism.
Source
Recombinant Rhesus macaque LAIR-1, Mouse IgG2a Fc Tag (LA1-C52A3) is expressed from human 293 cells (HEK293). It contains AA Gln 22 - Try 165 (Accession # ALV66454.1).
Predicted N-terminus: Gln 22
Molecular Characterization
This protein carries a mouse IgG2a Fc tag at the C-terminus.
The protein has a calculated MW of 42.9 kDa. The protein migrates as 64 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation..
Endotoxin
Less than 1.0 EU per μg by the LAL method.
Purity
>95% as determined by SDS-PAGE.
Formulation
Lyophilized from 0.22 μm filtered solution in Tris with Glycine, Arginine and NaCl, pH7.5. Normally trehalose is added as protectant before lyophilization.
Reconstitution
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
Storage
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
-20°C to -70°C for 12 months in lyophilized state;
-70°C for 3 months under sterile conditions after reconstitution.
Bioactivity
Please refer to product data sheet.
(1) "Differential isoform expression of Allergin-1 during acute and chronic inflammation"
Geerdink, Pascoal Ramos, van den Hoogen et al
Immun Inflamm Dis (2022) 10 (12), e739
(2) "Cytotoxic T Cell Expression of Leukocyte-Associated Immunoglobulin-Like Receptor-1 (LAIR-1) in Viral Hepatitis C-Mediated Hepatocellular Carcinoma"
Hammad, Aglan, Mohammed et al
Int J Mol Sci (2022) 23 (20)
(3) "Deficiency of C-reactive protein or human C-reactive protein transgenic treatment aggravates influenza A infection in mice"
Zhang, Gao, Li et al
Front Immunol (2022) 13, 1028458
Showing 1-3 of 143 papers.
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