1. Recombinant Proteins
  2. Fc Receptors
  3. Fc-gamma Receptor
  4. Fc gamma RIV/CD16-2
  5. FcgR4/CD16-2 Protein, Mouse (HEK293, His-Avi)

FcgR4/CD16-2 Protein, Mouse (HEK293, His-Avi)

Cat. No.: HY-P76916
Data Sheet Handling Instructions Technical Support

The FcγR4/CD16-2 protein is an IgG receptor with moderate affinity for IgG2a and IgG2b. It recognizes virus-specific IgG, triggers antibody-dependent cellular cytotoxicity, and provides protection against fatal influenza infection. FcgR4/CD16-2 Protein, Mouse (HEK293, His-Avi) is the recombinant mouse-derived FcgR4/CD16-2 protein, expressed by HEK293 , with C-Avi, C-His labeled tag.

For research use only. We do not sell to patients.

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  • Biological Activity

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Description

The FcγR4/CD16-2 protein is an IgG receptor with moderate affinity for IgG2a and IgG2b. It recognizes virus-specific IgG, triggers antibody-dependent cellular cytotoxicity, and provides protection against fatal influenza infection. FcgR4/CD16-2 Protein, Mouse (HEK293, His-Avi) is the recombinant mouse-derived FcgR4/CD16-2 protein, expressed by HEK293 , with C-Avi, C-His labeled tag.

Background

The FcγR4/CD16-2 Protein serves as a receptor for the constant Fc fragment of immunoglobulin gamma (IgG), exhibiting intermediate affinity for both IgG2a and IgG2b. It recognizes neutralizing virus-specific IgGs on infected cells, triggering antibody-dependent cellular cytotoxicity (ADCC) and conferring protection against lethal influenza virus infection. On splenic dendritic cells, FcγR4 efficiently uptakes antigen immune complexes, directing them into MHC class I and II antigen presentation pathways, thereby enhancing CD4-positive and CD8-positive T cell immune responses. Additionally, FcγR4 plays a crucial role in mediating neutrophil activation by IgG complexes, acting redundantly with FCGR2A. It contributes to bone resorption by enhancing osteoclast differentiation upon binding to IgG2a. Furthermore, FcγR4 functions as a receptor for the Fc region of immunoglobulin epsilon (IgE), binding to both a and b allotypes of IgE and promoting macrophage-mediated phagocytosis, antigen presentation to T cells, and the late phase of cutaneous allergic reactions. It forms a heterooligomeric complex with ITAM-containing signaling subunits FCER1G and interacts with the Fc region of antigen-complexed IgG.

Species

Mouse

Source

HEK293

Tag

C-Avi;C-His

Accession

A0A0B4J1G0 (Q19-Q203)

Gene ID
Molecular Construction
N-term
FcgR4 (Q19-Q203)
Accession # A0A0B4J1G0
Avi-His
C-term
Synonyms
Low affinity immunoglobulin gamma Fc region receptor IV; CD16-2; FcgammaRIV; Fcrl3
Molecular Weight

25-35 kDa

Glycosylation
Yes
Purity

Greater than 95% as determined by reducing SDS-PAGE

Endotoxin Level

<1 EU/μg, determined by LAL method.

Documentation

FcgR4/CD16-2 Protein, Mouse (HEK293, His-Avi) Related Classifications

Help & FAQs
  • How should lyophilized recombinant proteins be reconstituted and stored?

    1. Before opening the cap, centrifuge the vial at 13000 rpm for 20-30 seconds. This step will ensure that any lyophilized powder that may have adhered to the cap or walls is collected at the bottom of the vial, minimizing the risk of product loss. 2. Taking 10 μg as an example, first add 20 μL of reconstituted solution provided by MCE and use a pipette to gently resuspend the lyophilized protein until it is fully dissolved.. (For most proteins, the reconstitution solution we provide is sterile water. If a diluent other than water is required, it will be indicated in the product's Certificate of Analysis (COA).). 3. Add an additional 80 μL of buffer/culture medium containing carrier protein (either 0.1% BSA, 5% HSA, 10% FBS, or 5% trehalose), and then use a pipette to gently mix until uniform. The final concentration is should not be lower than 100 μg/mL. 4. Aliquot at least 20 μL per tube. 5. After aliquoting, store it frozen at a temperature ranging from -20ºC to -80ºC, and it can be preserved for 3 to 6 months.

  • How should solution-form recombinant proteins be stored?

    1. The product can be stored in its original form and diluted as needed upon use. 2. Alternatively, dilute with a buffer/culture medium containing a carrier protein (either 0.1% BSA, 5% HSA, 10% FBS, or 5% alginate), mix well by pipetting, and ensure that

  • Why is it necessary to add carrier proteins?

    Carrier proteins are commonly added to enhance the stability of recombinant proteins, preventing them from adhering to the walls of the container during freezing or thawing processes. Plastic tubes have a certain adsorptive capacity for proteins, which may lead to difficulty in separating the protein from the tube walls, resulting in a decrease in the actual concentration of the protein in the solution and thus affecting its activity. To minimize such losses, it is recommended to add a commonly used carrier protein solution prior to the long-term storage of recombinant protein products.

  • Carrier protein types and options?

    In cases where the carrier protein is not expected to influence the experimental outcomes, an appropriate carrier protein, such as 0.1% BSA (Bovine Serum Albumin), 5% HSA (Human Serum Albumin), 10% FBS (Fetal Bovine Serum), or 5% trehalose, can be incorpo

  • Reconstitution Calculator

  • Dilution Calculator

  • Specific Activity Calculator

The reconstitution calculator equation

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration
= ÷

The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
× = ×
C1   V1   C2   V2

The specific activity calculator equation

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)
Unit/mg = 106 ÷ ng/mL

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Product Name:
FcgR4/CD16-2 Protein, Mouse (HEK293, His-Avi)
Cat. No.:
HY-P76916
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