Human LILRB1/CD85j/ILT2 Protein

CAT#: ICP-A004

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Overview Specification
Species Human
Tag C-His-Avi
Expression Systems Expi293
Keywords Human; C-His-Avi; Expi293
Synonyms ILT2; ILT-2; ILT2FLJ37515; LILRB1; LIR1; MIR7; CD85J; XXbac-BCX85G21.4
Background LILRB1, also known as CD85j and ILT2, is a 110 kDa transmembrane glycoprotein in the LILR immunoregulatory protein family. Mature human LILRB1 consists of a 438 amino acid (aa) extracellular domain (ECD) with 4 tandem Ig-like domains, a 21 aa transmembrane segment, and a 168 aa cytoplasmic domain with 4 inhibitory ITIM motifs.LILRB1 is a receptor for class I MHC antigens. Recognizes a broad spectrum of HLA-A, HLA-B, HLA-C, HLA-G, and HLA-F alleles. Receptor for H301/UL18, a human cytomegalovirus class I MHC homolog. Ligand binding results in inhibitory signals and down-regulation of the immune response.
Source Recombinant Human LILRB1/CD85j/ILT2 Protein is expressed from Expi293 with His tag and Avi tag at the C-terminal. It contains Gly24-His458.
Molecular Weight The protein has a predicted MW of 50 kDa. Due to glycosylation, the protein migrates to 72-78 kDa based on Tris-Bis PAGE result.
Endotoxin Less than 1 EU per μg by the LAL method.
Purity >95% as determined by Tris-Bis PAGE.
>95% as determined by HPLC.
Formulation Lyophilized from 0.22 μm filtered solution in PBS (pH 7.4). Normally 5% trehalose is added as protectant before lyophilization.
Reconstitution Centrifuge tubes before opening. Reconstituting to a concentration more than 100 μg/ml is recommended. Dissolve the lyophilized protein in distilled water.
Storage -20 to -80℃ for 12 months as supplied from the date of receipt.
-20 to -80℃ for 3-6 months in an unopened state after reconstitution.
2-8℃ for 2-7 days after reconstitution.
Notes Recommend to aliquot the protein into smaller quantities for optimal storage. Please avoid freeze-thaw cycles.
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