重组人TNF-β/TNFSF1(肿瘤坏死因子);TNFβ/TNFSF1
简介:
TNFis 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.
RecombinantHuman TNF-βproduced inE. coliis is a glycosylated polypeptide chain of 172 amino acids. A fully biologically active molecule,rhTNF-β has a molecular mass of 18.6 kDa analyzed by reducing SDS-PAGE and is obtained by chromatographic techniques at GenScript.
别名:Tumor Necrosis Factor-β, human; TNF-beta, human,TNFSF1, Lymphotoxin-alpha (LT-α)
性状描述:
Species:……………………………Human
Source:………………………………E. coli
Measured Molecular Weight:……18.6kDa, observed by reducing SDS-PAGE.
Purity:………………………………> 95% as analyzed by SDS-PAGE.
Formulation:………………………Lyophilized after extensive dialysis against PBS.
Reconstitution:……………………Reconstituted in ddH2O or PBS at 100 μg/ml.
Sequence:
MLPGVGLTPS AAQTARQHPK MHLAHSTLKP AAHLIGDPSK
QNSLLWRANT DRAFLQDGFS LSNNSLLVPT SGIYFVYSQV
VFSGKAYSPK ATSSPLYLAH EVQLFSSQYP FHVPLLSSQK
MVYPGLQEPW LHSMYHGAAF QLTQGDQLST HTDGIPHLVL
SPSTVFFGAF AL
储存条件:Lyophilized recombinantHuman Tumor Necrosis Factor-beta (TNF-β)remains stable up to 6 months at lower than -70°C from date of receipt. Upon reconstitution, Human TNF-β should be stable 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) can be added.Avoid repeated freeze-thaw cycles.
运输条件:2~8℃运输
生物活性:
ED50 < 4 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 x 108 units/mg.
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用途及描述:科研试剂,广泛应用于分子生物学,药理学等科研方面,严禁用于人体。
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