Recombinant Human LILRA2/CD85h/ILT1 Protein, CF

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Recombinant Human LILRA2/CD85h/ILT1 Protein Bioactivity
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Recombinant Human LILRA2/CD85h/ILT1 Protein, CF Summary

Product Specifications

>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Endotoxin Level
<0.10 EU per 1 μg of the protein by the LAL method.
Measured by its binding ability in a functional ELISA. When Recombinant Human LILRA2/CD85h/ILT1 is coated at 2 µg/mL, Recombinant Human Angiopoietin-like Protein 7/ANGPTL7. (Catalog # 914-AN) binds with a typical ED50 of 150-900 ng/mL.
Human embryonic kidney cell, HEK293-derived human LILRA2/CD85h/ILT1 protein
Gly24-Asn449, with a C-terminal 6-His tag
Accession #
N-terminal Sequence
Predicted Molecular Mass
48 kDa
70-81 kDa, reducing conditions

Product Datasheets

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Carrier Free

What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.


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.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.

Scientific Data

Bioactivity Recombinant Human LILRA2/CD85h/ILT1 Protein Bioactivity View Larger

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 of 150-900 ng/mL.

Reconstitution Calculator

Reconstitution Calculator

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Background: LILRA2/CD85h/ILT1

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.

  1. Thomas, R. et al. (2010) Clin. Rev. Allergy Immunol. 38:159.
  2. Borges, L. et al. (1997) J. Immunol. 159:5192.
  3. Jones, D.C. et al. (2009) Eur. J. Immunol. 39:3195.
  4. Mamegano, K. et al. (2008) Genes Immun. 9:214.
  5. Nakajima, H. et al. (1999) J. Immunol. 162:5.
  6. Lu, H.K. et al. (2012) PLoS One 7:e33478.
  7. Lee, D.J. et al. (2007) J. Immunol. 179:8128.
Long Name
Leukocyte Immunoglobulin-like Receptor, Subfamily A (with TM domain), Member 2
Entrez Gene IDs
11027 (Human)
Alternate Names
CD85 antigen-like family member H; CD85h antigen; CD85h; ILT1; ILT-1; ILT1CD85H; Leukocyte immunoglobulin-like receptor 7; leukocyte immunoglobulin-like receptor subfamily A member 2 soluble; leukocyte immunoglobulin-like receptor subfamily A member 2; leukocyte immunoglobulin-like receptor, subfamily A (with TM domain), member 2; LILRA2; LIR7; LIR7LIR-7Immunoglobulin-like transcript 1


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By Anonymous on 05/06/2020
Application: Binding assay/Protein-protein interaction
Reason for Rating: good material

Performed binding specificity experiments for the lead molecule (xLILRA6) on its ligand family panels (RA1, RA2, RA5, RA6, RB1, RB2, RB3, RB4, RB5)