CD244 Human, Sf9

CD244 Human Recombinant, Sf9
Cat. No.
BT27043
Source

Sf9, Insect cells.

Synonyms

Natural killer cell receptor 2B4, NK cell activation-inducing ligand, NAIL, NK cell type I receptor protein 2B4, NKR2B4, h2B4, SLAM family member 4, SLAMF4, Signaling lymphocytic activation molecule 4, CD244, 2B4.

Appearance
Sterile Filtered colorless solution.
Purity

Greater than 90% as determined by SDS-PAGE.

Usage
THE BioTek's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
Shipped with Ice Packs
In Stock

Description

CD244 Human Recombinant produced in Sf9 Insect cells is a single, glycosylated polypeptide chain containing 448 amino acids (19-224a.a.) and having a molecular mass of 50.2kDa (Molecular size on SDS-PAGE will appear at approximately 50-70kDa). CD244 is expressed with a 239 amino acids hIgG-His tag at C-Terminus and purified by proprietary chromatographic techniques.

Product Specs

Introduction
CD244, also known as Natural Killer Cell Receptor 2B4, is a cell surface receptor primarily found on natural killer (NK) cells and some T cells. This receptor plays a crucial role in the immune system by mediating non-MHC-restricted killing, a process where NK cells eliminate target cells without needing a specific antigen presentation by major histocompatibility complex (MHC) molecules. The interaction between CD244 on NK cells and its ligands on target cells helps regulate the cytotoxic activity of NK cells. Beyond its role in NK cell function, CD244 is involved in eosinophil adhesion and chemotaxis, contributing to the complex mechanisms of allergic responses, particularly in allergic rhinitis.
Description
This product consists of the extracellular domain of human CD244, recombinantly produced in Sf9 insect cells. The protein is a single, glycosylated polypeptide chain comprising 448 amino acids (specifically, residues 19 to 224a.a.) with a molecular weight of 50.2 kDa. It is important to note that due to glycosylation, the protein might appear between 50-70 kDa on SDS-PAGE. For purification and detection purposes, a 239 amino acid hIgG-His tag is added at the C-terminus. The protein is purified using proprietary chromatographic techniques to ensure its high purity and quality.
Physical Appearance
A clear, colorless solution that has been sterilized by filtration.
Formulation
The CD244 protein is provided at a concentration of 1.0 mg/ml in a solution of Phosphate Buffered Saline (pH 7.4) containing 10% glycerol for stability.
Stability
For short-term storage (up to 4 weeks), the protein should be kept at a refrigerated temperature of 4°C. For extended storage, it is recommended to freeze the protein at -20°C. To further enhance stability during long-term storage, adding a carrier protein such as HSA or BSA at a concentration of 0.1% is advisable. It is crucial to avoid repeated freeze-thaw cycles to maintain protein integrity and activity.
Purity
The purity of this CD244 protein is greater than 90%, as determined by SDS-PAGE analysis, indicating a high level of purity suitable for various research applications.
Synonyms

Natural killer cell receptor 2B4, NK cell activation-inducing ligand, NAIL, NK cell type I receptor protein 2B4, NKR2B4, h2B4, SLAM family member 4, SLAMF4, Signaling lymphocytic activation molecule 4, CD244, 2B4.

Source

Sf9, Insect cells.

Amino Acid Sequence

ADLGKGCQGS ADHVVSISGV PLQLQPNSIQ TKVDSIAWKK LLPSQNGFHH ILKWENGSLP SNTSNDRFSF IVKNLSLLIK AAQQQDSGLY CLEVTSISGK VQTATFQVFV FDKVEKPRLQ GQGKILDRGR CQVALSCLVS RDGNVSYAWY RGSKLIQTAG NLTYLDEEVD INGTHTYTCN VSNPVSWESH TLNLTQDCQN AHQEFRFWPL EPKSCDKTHT CPPCPAPELL GGPSVFLFPP KPKDTLMISR TPEVTCVVVD VSHEDPEVKF NWYVDGVEVH NAKTKPREEQ YNSTYRVVSV LTVLHQDWLN GKEYKCKVSN KALPAPIEKT ISKAKGQPRE PQVYTLPPSR DELTKNQVSL TCLVKGFYPS DIAVEWESNG QPENNYKTTP PVLDSDGSFF LYSKLTVDKS RWQQGNVFSC SVMHEALHNH YTQKSLSLSP GKHHHHHH.

Product Science Overview

Structure and Function

CD244 contains two Ig-like (immunoglobulin-like) domains and is involved in mediating non-major histocompatibility complex (MHC) restricted killing . The interaction between NK cells and target cells via the CD244 receptor modulates NK-cell cytolytic activity . Additionally, CD244 molecules function in eosinophil adhesion and chemotaxis and play a role in the pathophysiology of allergic rhinitis (AR) .

Recombinant Production

CD244 Human Recombinant produced in Sf9 insect cells is a single, glycosylated polypeptide chain containing 448 amino acids (19-224a.a.) and has a molecular mass of 50.2 kDa . The recombinant protein is expressed with a 239 amino acids hIgG-His tag at the C-terminus and is purified using proprietary chromatographic techniques . The molecular size on SDS-PAGE appears at approximately 50-70 kDa .

Immune Regulation

CD244 binds to the ligand CD48 on adjacent cells and transmits stimulatory or inhibitory signals that regulate immune function . This interaction is essential for the expansion and activation of NK cells, and it regulates various immune responses such as cytotoxicity, cytokine production, and intercellular interactions . Abnormal interactions between immune cells involving CD244 contribute to the onset and progression of autoimmune diseases, infectious diseases, and cancers .

Applications and Stability

The CD244 protein solution is formulated with Phosphate Buffered Saline (pH 7.4) and 10% glycerol . It is recommended to store the solution at 4°C if used within 2-4 weeks, or at -20°C for longer periods. For long-term storage, adding a carrier protein (0.1% HSA or BSA) is advised to avoid multiple freeze-thaw cycles .

Research and Therapeutic Potential

CD244’s role in immune regulation makes it a potential prognostic indicator or therapeutic target for various immune-related diseases . Its ability to regulate immune responses and kill tumor cells also suggests its use in constructing chimeric antigen receptors (CAR) on NK cells .

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