LILRB4,also known as CD85k and LIR-5, ILT3, is an approximately 60 kDa transmembrane glycoprotein that negatively regulates immune cell activation. Mature human ILT3 consists of an extracellular domain (ECD) with two Ig-like domains, a transmembrane segment, and a cytoplasmic domain with 3 immunoreceptor tyrosine-based inhibitory motifs (ITIM). The mature ECD of human ILT3 shares 44% amino acid identity with mouse ILT3. Alternative splicing of human ILT3 generates an isoform that lacks the first ITIM and a secreted isoform that circulates in the serum of cancer patients. ILT3 is expressed on dendritic cells (DC), monocytes, macrophages, and vascular endothelial cells.
产品性质
别名(Synonyms) |
HM18, ILT3, ILT-3, LILRB4, LIR5, CD85K |
Uniprot No. |
|
表达区间及表达系统(Source) |
HEK293 Cells-derived Human LILRB4 / CD85k / ILT3 Protein, Gln22-Arg256 with hFc tag at the C-terminal |
分子量(Molecular Weight) |
Approximately 52.6 kDa. Due to glycosylation, the protein migrates to 60-68 kDa based on Tris-Bis PAGE result. |
外观(Physical Appearance) |
Sterile Filtered White lyophilized (freeze-dried) powder. |
纯度(Purity) |
> 95% as determined by SDS-PAGE and HPLC |
活性(Activity) |
1.ELISA Data: Immobilized Human LILRB4, hFc Tag at 0.2 μg/mL (100 μL/Well) on the plate. Dose response curve for Human Anti-LILRB4 Antibody, hFc Tag with the EC50 of 9.8 ng/mL determined by ELISA. 2.SPR Data: Human LILRB4, hFc Tag captured on CM5 Chip via Protein A can bind Human APOE, His Tag with an affinity constant of 115.9 nM as determined in SPR assay (Biacore T200). |
内毒素(Endotoxin) |
< 1.0 EU per 1μg of the protein by the LAL method. |
制剂(Formulation) |
Lyophilized from 0.22 μm filtered solution in PBS (pH 7.4). Normally 5% trehalose is added as protectant before lyophilization. |
复溶(Reconstitution) |
Centrifuge tubes before opening. Reconstituting to a concentration more than 100 μg/mL` is recommended (usually we use 1mg/mL solution for lyophilization). Dissolve the lyophilized protein in distilled water. |
运输与保存方法
冰袋运输。-20℃至-80℃保存,一年有效期。
复溶后,-20 至 -80°C,在未开封状态下保存 3-6 个月。复溶后,2-8°C 保存 2-7 天。
建议第一次使用时分装冻存,避免反复冻融。
注意事项
1. 避免反复冻融。
2. 为了您的安全和健康,请穿实验服并戴一次性手套操作。
3. 本产品仅作科研用途!
产品数据
HB220629
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