1. Recombinant Proteins
  2. Fc Receptors
  3. Immunoglobulin Fc Region
  4. IgE
  5. IgE Protein, Cynomolgus (HEK293, His-Avi)

IgE Protein, Cynomolgus (HEK293, His-Avi)

Cat. No.: HY-P77694
COA Handling Instructions

IgE protein is an important immunoglobulin component that participates in the recognition and effector phases of humoral immunity. As a membrane-bound receptor on B lymphocytes, IgE triggers clonal expansion upon antigen binding, leading to plasma cell differentiation. IgE Protein, Cynomolgus (HEK293, His-Avi) is the recombinant cynomolgus-derived IgE protein, expressed by HEK293 , with C-Avi, C-His labeled tag. The total length of IgE Protein, Cynomolgus (HEK293, His-Avi) is 222 a.a., with molecular weight of 35-40 kDa.

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

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50 μg $305 In-stock
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Description

IgE protein is an important immunoglobulin component that participates in the recognition and effector phases of humoral immunity. As a membrane-bound receptor on B lymphocytes, IgE triggers clonal expansion upon antigen binding, leading to plasma cell differentiation. IgE Protein, Cynomolgus (HEK293, His-Avi) is the recombinant cynomolgus-derived IgE protein, expressed by HEK293 , with C-Avi, C-His labeled tag. The total length of IgE Protein, Cynomolgus (HEK293, His-Avi) is 222 a.a., with molecular weight of 35-40 kDa.

Background

The IgE protein, a crucial component of immunoglobulins, functions in both the recognition and effector phases of humoral immunity. Serving as a membrane-bound receptor on B lymphocytes during the recognition phase, IgE plays a pivotal role in triggering clonal expansion and differentiation into immunoglobulin-secreting plasma cells upon specific antigen binding. In the effector phase, secreted IgE mediates immune responses through two Fc receptors, FCER1A:MS4A2:FCGR1A and FCER2, which, upon antigen cross-linking, initiate signaling pathways leading to immune cell activation. IgE facilitates immediate hypersensitivity responses against allergens and defends against helminth parasites, bacteria, and venom toxicity. Dysregulation can lead to harmful allergic reactions and anaphylaxis. IgE stimulates mast cells, basophils, and eosinophils to release inflammatory mediators, contributing to tissue remodeling and cytotoxicity against microbes. On macrophages, IgE induces intracellular killing of parasites and activates antitumor functions, including antibody-dependent cytotoxicity and proinflammatory responses. Additionally, IgE plays a role in B cell antigen uptake and presentation to T cells.

Biological Activity

Immobilized Cynomolgus IgE, His Tag at 0.5 μg/mL (100 μL/well) on the plate. Dose response curve for Anti-IgE Antibody, hFc Tag with the EC50 of 11.1 ng/mL determined by ELISA.

Species

Cynomolgus

Source

HEK293

Tag

C-Avi;C-His

Accession

G8F4W7 (C208-K429)

Gene ID

/

Molecular Construction
N-term
IgE (C208-K429)
Accession # G8F4W7
His-Avi
C-term
Synonyms
Ig epsilon chain C region; IgE
Molecular Weight

35-40 kDa

Purity

Greater than 95% as determined by Tris-Bis PAGE.

Appearance

Lyophilized powder.

Formulation

Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.4. Normally 8% trehalose is added as protectant before lyophilization.

Endotoxin Level

<1 EU/μg, determined by LAL method.

Reconstitution

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH2O.

Storage & Stability

Stored at -20°C for 2 years. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Shipping

Room temperature in continental US; may vary elsewhere.

Documentation

IgE Protein, Cynomolgus (HEK293, His-Avi) Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

  • 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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IgE Protein, Cynomolgus (HEK293, His-Avi)
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HY-P77694
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