IL-5 Protein, Human, Recombinant

Product Specifications

Background

Interleukin 5 (IL-5) is a member of the interleukin family with a length of 115 amino acids. Interleukins are a group of cytokines (secreted proteins/signaling molecules) that were first seen to be expressed by white blood cells (leukocytes) and has been found in a wide variety of body cells. Interleukin 5 or IL-5 is produced by T helper-2 cells and mast cells. It helps to stimulate B cell growth and increase immunoglobulin secretion and is considered a key mediator in eosinophil activation. Interleukin 5 (IL-5) has long been associated with several allergic diseases, including allergic rhinitis and asthma. Growth in the number of circulating, airway tissue, and induced sputum eosinophils have been observed in patients with these diseases. IL-5 also had something with the terminally differentiated granulocyte eosinophils. IL-5 was originally found as an eosinophil colony-stimulating factor. It has been proved to be a major regulator of eosinophil accumulation in tissues and can modulate eosinophil behavior at every stage from maturation to survival.

Overview

A DNA sequence encoding the human IL5 (NP_000870.1) (Ile20-Ser134) was expressed.

Synonyms

EDF Protein, Human; IL-5 Protein, Human; Interleukin 5 Protein, Human; TRF Protein, Human

Gene Name

Interleukin 5

Expression System

HEK293 Cells

Tag

No tag

Endotoxin

< 1.0 EU per μg protein as determined by the LAL method.

Purity

> 95 % as determined by SDS-PAGE.

Activity

Measured in a cell proliferation assay using TF-1 human erythroleukemic cells. The EDfor this effect is typically 0.1-1 ng/mL.

Form

Lyophilized

Buffer

Lyophilized from sterile PBS, pH 7.4. Please contact us for any concerns or special requirements. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween 80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hard copy of CoA.

Function

Cytokine Proteins, Interleukin proteins, Growth Factor proteins, Biological Target proteins, Immunotherapy proteins

Molecular Weight

The recombinant human IL5 consists of 115 amino acids and predicts a molecular mass of 13.15 kDa.

Storage Conditions

In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature. Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise. Stable for 1 year at -20°C or below from date of shipment. For maximum recovery of product, centrifuge the original vial after thawing and opening the cap. For long-term storage, aliquot and store at -20°C or below. Avoid repeated freeze-thaw cycles.