Human TNF-beta is an 18.6 kDa protein containing 172 amino acid residues.:
MLPGVGLTPS AAQTARQHPK MHLAHSTLKP AAHLIGDPSK QNSLLWRANT DRAFL QDGFSLSNNSLLVPT SGIYFVYSQV VFSGKAYSPK ATSSPLYLAH E VQLFSSQYP FHVPLLSSQKMVYPGLQEPW LHSMYHGAAF QLTQGDQL ST HTDGIPHLVL SPSTVFFGAF AL
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
< 0.100 Eu/µg
The ED50, determined by the cytolysis of murine L929 cells in the presence of actinomycin D, is < 0.05 ng/ml, corresponding to a specific activity of > 2 x 107 units/mg.
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Preparation and Storage
Stability and Storage
Shipped at 4°C. Store at 4°C (up to 6 months). Store at -20°C.
This product is an active protein and may elicit a biological response in vivo, handle with caution.
Reconstitute with 20µl pure water.
Lymphotoxin alpha (TNF superfamily, member 1)
TNF superfamily member 1
Tumor necrosis factor beta
tumor necrosis factor ligand 1E
Tumor necrosis factor ligand superfamily member 1
Cytokine that in its homotrimeric form binds to TNFRSF1A/TNFR1, TNFRSF1B/TNFBR and TNFRSF14/HVEM. In its heterotrimeric form with LTB binds to TNFRSF3/LTBR. Lymphotoxin is produced by lymphocytes and cytotoxic for a wide range of tumor cells in vitro and in vivo.
Involvement in disease
Genetic variations in LTA are a cause of susceptibility psoriatic arthritis (PSORAS) [MIM:607507]. PSORAS is an inflammatory, seronegative arthritis associated with psoriasis. It is a heterogeneous disorder ranging from a mild, non-destructive disease to a severe, progressive, erosive arthropathy. Five types of psoriatic arthritis have been defined: asymmetrical oligoarthritis characterized by primary involvement of the small joints of the fingers or toes; asymmetrical arthritis which involves the joints of the extremities; symmetrical polyarthritis characterized by a rheumatoidlike pattern that can involve hands, wrists, ankles, and feet; arthritis mutilans, which is a rare but deforming and destructive condition; arthritis of the sacroiliac joints and spine (psoriatic spondylitis).
Belongs to the tumor necrosis factor family.
Secreted. Membrane. The homotrimer is secreted. The heterotrimer is membrane-associated.