Recombinant Human Lymphotoxin-alpha/TNF-beta

Newer Version Available: 211-TBB
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Discontinued Product

211-TB has been discontinued and is replaced by 211-TBB.

R&D Systems Recombinant Proteins and Enzymes
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Citations (8)
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Reviews (1)

Recombinant Human Lymphotoxin-alpha/TNF-beta Summary

Product Specifications

Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain
Endotoxin Level
<1.0 EU per 1 μg of the protein by the LAL method.
Activity
Measured in a cytotoxicity assay using L‑929 mouse fibroblast cells in the presence of the metabolic inhibitor actinomycin D. Matthews, N. and M.L. Neale (1987) in Lymphokines and Interferons, A Practical Approach. Clemens, M.J. et al. (eds): IRL Press. 221. The ED50 for this effect is 0.1-0.4 ng/mL.
Source
E. coli-derived human Lymphotoxin-alpha/TNF-beta protein
Leu35-Leu205, with an N-terminal Met
Accession # P01374
Accession #
N-terminal Sequence
Analysis
Met
Predicted Molecular Mass
18.8 kDa; The Recombinant Human Lymphotoxin-alpha /TNF-beta preparations may also contain some N‑terminally truncated bioactive forms of Lymphotoxin-alpha /TNF-beta which lack 22, 15, or 3 N-terminal residues.
SDS-PAGE
14-19 kDa, reducing conditions

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211-TB (with carrier)

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211-TB/CF (carrier free)

Discontinued Product

211-TB

Formulation Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
Reconstitution Reconstitute at 100 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
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Background: Lymphotoxin-alpha/TNF-beta

Tumor necrosis factor beta (TNF-beta ), also known as lymphotoxin-alpha (LT-alpha ), and TNF-alpha, are two structurally and functionally related proteins that bind to the same cell surface receptors (TNF RI and TNF RII) and produce a vast range of similar, but not identical, effects. Among these effects is the ability to kill certain tumor cells directly, from which the names tumor necrosis factor and lymphotoxin both derive. Mature TNF‑ beta /LT‑ alpha and TNF-alpha share approximately 35% protein sequence homology and the biologically active secreted forms of both proteins are homotrimers. Whereas TNF-alpha can exist as a type II membrane protein, TNF-beta /LT-alpha possesses a typical signal peptide sequence and is a secreted protein. It has been shown that TNF‑ beta /LT‑ alpha is also present on the cell surface of activated T, B and LAK cells as a heteromeric complex with LT-beta, a type II membrane protein that is another member of the TNF ligand family. The genes for TNF-alpha, TNF‑ beta /LT‑ alpha, and LT‑ beta are closely linked within the major histocompatibility complex.

TNF-beta /LT-alpha is expressed in activated T- and B‑lymphocytes. In addition to its cytotoxic action on tumor cells, TNF-beta /LT-alpha has been shown to be a mediator of inflammation and immune function. Evidence is also accumulating that TNF-beta /LT-alpha and TNF-alpha are mediators in the pathogenesis of certain autoimmune diseases. TNF-beta /LT-alpha has also been shown to have a role in lymphoid organ development. Human and mouse TNF-beta /LT-alpha share approximately 74% homology in their amino acid sequence and exhibit cross-species activity.

Long Name
Tumor Necrosis Factor beta
Entrez Gene IDs
4049 (Human); 16992 (Mouse)
Alternate Names
LT; LTA; LT-alpha; lymphotoxin alpha (TNF superfamily, member 1); Lymphotoxin alpha; Lymphotoxinalpha; Lymphotoxin-alpha; tnfb; TNF-beta; TNFBlymphotoxin-alpha; TNFSF1; TNFSF1B; TNFSF1TNF-beta; tumor necrosis factor beta; Tumor necrosis factor ligand superfamily member 1

Citations for Recombinant Human Lymphotoxin-alpha/TNF-beta

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

8 Citations: Showing 1 - 8
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  1. Clostridial C3 Toxins Enter and Intoxicate Human Dendritic Cells
    Authors: M Fellermann, C Huchler, L Fechter, T Kolb, F Wondany, D Mayer, J Michaelis, S Stenger, K Mellert, P Möller, TFE Barth, S Fischer, H Barth
    Toxins (Basel), 2020-09-01;12(9):.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay
  2. EphA2 contributes to disruption of the blood-brain barrier in cerebral malaria
    Authors: TK Darling, PN Mimche, C Bray, B Umaru, LM Brady, C Stone, CE Eboumbou M, TE Lane, LS Ayong, TJ Lamb
    PLoS Pathog., 2020-01-30;16(1):e1008261.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay
  3. BTKCys481Serdrives ibrutinib resistance via ERK1/2, and protects BTKWild-TypeMYD88 mutated cells by a paracrine mechanism
    Authors: JG Chen, X Liu, M Munshi, L Xu, N Tsakmaklis, MG Demos, A Kofides, ML Guerrera, GG Chan, CJ Patterson, KE Meid, J Gustine, T Dubeau, P Severns, JJ Castillo, ZR Hunter, J Wang, SJ Buhrlage, NS Gray, SP Treon, G Yang
    Blood, 2018-03-01;0(0):.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay
  4. Dendritic cell regulation of NK-cell responses involves lymphotoxin-alpha, IL-12, and TGF-beta.
    Authors: Sarhan D, Palma M, Mao Y, Adamson L, Kiessling R, Mellstedt H, Osterborg A, Lundqvist A
    Eur J Immunol, 2015-04-17;45(6):1783-93.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay
  5. Generation and characterization of small single domain antibodies inhibiting human tumor necrosis factor receptor 1.
    Authors: Steeland S, Puimege L, Vandenbroucke R, Van Hauwermeiren F, Haustraete J, Devoogdt N, Hulpiau P, Leroux-Roels G, Laukens D, Meuleman P, De Vos M, Libert C
    J Biol Chem, 2014-12-23;290(7):4022-37.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay
  6. Inhibition of activin A ameliorates skeletal muscle injury and rescues contractile properties by inducing efficient remodeling in female mice.
    Authors: Yaden B, Wang Y, Wilson J, Culver A, Milner A, Datta-Mannan A, Shetler P, Croy J, Dai G, Krishnan V
    Am J Pathol, 2014-04-01;184(4):1152-66.
    Species: Mouse
    Sample Types: Whole Cells
    Applications: Bioassay
  7. Regulatory T-cells and cAMP suppress effector T-cells independently of PKA-CREM/ICER: a potential role for Epac.
    Authors: Vang, Amanda G, Housley, William, Dong, Hongli, Basole, Chaitali, Ben-Sasson, Shlomo Z, Kream, Barbara, Epstein, Paul M, Clark, Robert B, Brocke, Stefan
    Biochem J, 2013-12-15;456(3):463-73.
    Species: Mouse
    Sample Types: Whole Cells
    Applications: Bioassay
  8. An inflammation-induced mechanism for leukocyte transmigration across lymphatic vessel endothelium.
    Authors: Johnson LA, Clasper S, Holt AP, Lalor PF, Baban D, Jackson DG
    J. Exp. Med., 2006-11-20;203(12):2763-77.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay

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Reviews for Recombinant Human Lymphotoxin-alpha/TNF-beta

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Recombinant Human Lymphotoxin-alpha/TNF-beta
By Anonymous on 01/02/2018
Application: Characterization prior to use.
Reason for Rating: Two peaks are observed to elute off the SEC. The first peak elutes between the 17kDa & 44kDa MW standards. The second peak elutes between the 1.3kDa & 17kDa MW standards. The MW of this homotrimer is 56376Da and should run after the 44kDa MW standard.