Recombinant Human LILRA2/CD85h/ILT1 Protein, CF Summary
Gly24-Asn449, with a C-terminal 6-His tag
|Formulation||Lyophilized from a 0.2 μm filtered solution in PBS.|
|Reconstitution||Reconstitute at 500 μg/mL in PBS.|
|Shipping||The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.|
|Stability & Storage:||Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
When Recombinant Human LILRA2/CD85h/ILT1 (Catalog # 9040-T4) is coated at 2 µg/mL, Recombinant Human Angiopoietin-like 7 Protein (Catalog # 914-AN) binds with a typical ED50 of150-900 ng/mL.
LILRA2, also known as ILT1, CD85h, and LIR7, is an approximately 70 kDa variably glycosylated transmembrane protein that regulates immune cell activation (1). Mature human LILRA2 consists of a 426 amino acid (aa) extracellular domain (ECD) with 4 Ig-like domains, a 21 aa transmembrane segment, and a 13 aa cytoplasmic tail (2). Alternative splicing generates isoforms with short deletions between the fourth Ig-like domain and the transmembrane region, and an isoform that is truncated C-terminal to the fourth Ig-like domain (3, 4). LILRA2 is expressed on monocytes, neutrophils, basophils, and eosinophils (5-7). It contains a positively charged arginine residue in its transmembrane segment, enabling association with the signaling protein Fc epsilon RI gamma (5). Cross-linking of LILRA2 on monocytes induces the production of multiple cytokines as well as the upregulation of Fc gamma receptors (6, 7). Cross-linking also restricts monocyte differentiation into immature dendritic cells, phagocytic activity, and antigen presentation to T cells (6, 7). R&D Systems in-house testing indicates that LILRA2 binds to Angiopoietin-like 7, consistent with the demonstrated functional interactions between other members of these protein families (8).
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- Borges, L. et al. (1997) J. Immunol. 159:5192.
- Jones, D.C. et al. (2009) Eur. J. Immunol. 39:3195.
- Mamegano, K. et al. (2008) Genes Immun. 9:214.
- Nakajima, H. et al. (1999) J. Immunol. 162:5.
- Lu, H.K. et al. (2012) PLoS One 7:e33478.
- Lee, D.J. et al. (2007) J. Immunol. 179:8128.
- Zheng, J. et al. (2012) Nature 485:656.
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