ARG70271
Human CD223 / LAG3 recombinant protein (ECD) (His-tagged, C-ter)
Human CD223 / LAG3 recombinant protein (ECD) (His-tagged, C-ter) for SDS-PAGE,ELISA,Binding Activity and Human
Overview
| Product Description | HEK293 expressed, His-tagged (C-ter) Human CD223 / LAG3 recombinant protein (ECD). |
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| Tested Reactivity | Hu |
| Tested Application | Binding, ELISA, SDS-PAGE |
| Target Name | CD223 / LAG3 (ECD) |
| Species | Human |
| A.A. Sequence | Leu23 - Leu450 of Human CD223 / LAG3 (NP_002277.4) with 6X His tag at the C-terminus. |
| Expression System | HEK293 |
| Alternate Names | CD antigen CD223; CD223; Protein FDC; Lymphocyte activation gene 3 protein; LAG-3 |
Application Instructions
| Application Note | Binding activity test: Measured by its binding ability in a functional ELISA. Immobilized Recombinant Human LAG3 at 2µg/ml (100 µl/well) can bind Anti-LAG3 antibody with a linear range of 13-40 ng/ml. Binding activity test: Measured by its binding ability in a functional ELISA. Immobilized Human FGL1 at 5 µg/ml (100 µl/well) can bind recombinant Human LAG3, the EC50 of Human LAG3 is 0.32 µg/ml. |
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Properties
| Form | Powder |
|---|---|
| Purification Note | 0.22 µm filter sterilized. Endotoxin level is less than 0.1 EU/µg of the protein, as determined by the LAL test. |
| Purity | > 95% (by SDS-PAGE) |
| Buffer | PBS (pH 7.4) |
| Reconstitution | Reconstitute to a concentration of 0.1 - 0.5 mg/ml in sterile distilled water. |
| Storage Instruction | Lyophilized protein should be stored at -20°C or -80°C. After reconstitution, aliquot and store at -20°C for up to one month, at 2-8°C for up to one week. Storage in frost free freezers is not recommended. Avoid repeated freeze/thaw cycles. Suggest spin the vial prior to opening. |
| Note | For laboratory research only, not for drug, diagnostic or other use. |
Bioinformation
| Database Links |
Swiss-port # P18627 Human Lymphocyte activation gene 3 protein |
|---|---|
| Gene Symbol | LAG3 |
| Gene Full Name | lymphocyte-activation gene 3 |
| Background | Lymphocyte-activation protein 3 belongs to Ig superfamily and contains 4 extracellular Ig-like domains. The LAG3 gene contains 8 exons. The sequence data, exon/intron organization, and chromosomal localization all indicate a close relationship of LAG3 to CD4. [provided by RefSeq, Jul 2008] |
| Function | Lymphocyte activation gene 3 protein: Inhibitory receptor on antigen activated T-cells (PubMed:7805750, PubMed:8647185, PubMed:20421648). Delivers inhibitory signals upon binding to ligands, such as FGL1 (By similarity). FGL1 constitutes a major ligand of LAG3 and is responsible for LAG3 T-cell inhibitory function (By similarity). Following TCR engagement, LAG3 associates with CD3-TCR in the immunological synapse and directly inhibits T-cell activation (By similarity). May inhibit antigen-specific T-cell activation in synergy with PDCD1/PD-1, possibly by acting as a coreceptor for PDCD1/PD-1 (By similarity). Negatively regulates the proliferation, activation, effector function and homeostasis of both CD8(+) and CD4(+) T-cells (PubMed:7805750, PubMed:8647185, PubMed:20421648). Also mediates immune tolerance: constitutively expressed on a subset of regulatory T-cells (Tregs) and contributes to their suppressive function (By similarity). Also acts as a negative regulator of plasmacytoid dendritic cell (pDCs) activation (By similarity). Binds MHC class II (MHC-II); the precise role of MHC-II-binding is however unclear (PubMed:8647185). [Secreted lymphocyte activation gene 3 protein]: May function as a ligand for MHC class II (MHC-II) on antigen-presenting cells (APC), promoting APC activation/maturation and driving Th1 immune response. [UniProt] |
| Cellular Localization | Membrane; Single-pass type I membrane protein. [UniProt] |
| Calculated MW | 57 kDa |
