TNF-β, Human

TNF is secreted by macrophages, monocytes, neutrophils, T-cells, NK-cells following their stimulation by bacterial LPS. Cells expressing CD4 secrete TNF-alpha while CD8 cells secrete little or no TNF-alpha. The synthesis of TNF-alpha is induced by many different stimuli including interferons, IL2, GM-CSF. TNF-β is a potent mediator of inflammatory and immune responses. It belongs to the TNF family of ligands, and signals through TNFR1 and TNFR2. TNF-β is produced by activated T and B lymphocytes, and has similar activities to TNF-α. It mediates a large variety of inflammatory, immunostimulatory, and antiviral responses.

價格	￥480
產品編號	Z03375
規格	10 μg 50 μg 1 mg 大單詢價
數量

產品簡介圖例技術背景

產品簡介

Species

Human

Protein Construction

TNF-β (Leu35-Leu205)
Accession # P01374

Purity

> 95% as analyzed by SDS-PAGE

Endotoxin Level

< 0.2 EU/μg of protein by gel clotting method

Biological Activity

ED₅₀ < 4.0 pg/ml, measured in a cytotoxicity assay using L-929 mouse fibrosarcoma cells in the presence of the metabolic inhibitor actinomycin D, corresponding to a specific activity of > 2.5 × 10⁸ units/mg.

Expression System

E. coli

Apparent Molecular Weight

~18.6 kDa, on SDS-PAGE under reducing conditions.

Formulation

Lyophilized after extensive dialysis against PBS.

Reconstitution

It is recommended that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute the lyophilized powder in ddH?O or PBS up to 100 μg/ml.

Storage & Stability

Upon receiving, this product remains stable for up to 6 months at lower than -70°C. Upon reconstitution, the product should be stable for up to 1 week at 4°C or up to 3 months at -20°C. For long term storage it is recommended that a carrier protein (example 0.1% BSA) be added. Avoid repeated freeze-thaw cycles.

圖例

技術背景

Target Background

Synonyms

LTA; LT; TNFB; TNFSF1; Lymphotoxin alpha; TNLG1E; LT-α; tumor necrosis factor-beta

For laboratory research use only. Direct human use, including taking orally and injection and clinical use are forbidden.

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TNF-β, Human

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