• Species Reactivity
  Mouse
• Specificity
  Detects mouse TNF RI/TNFRSF1A in direct ELISAs and Western blots. In direct ELISAs and Western blots (non-reducing conditions), less than 5% cross-reactivity with recombinant human TNF RI is observed.
• Source
  Polyclonal Goat IgG
• Purification
  Antigen Affinity-purified
• Immunogen
  E. coli-derived recombinant mouse TNF RI
  Ile22-Ala212
  Accession # P25118
• Formulation
  Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
• Endotoxin Level
  <0.10 eu="" per="" 1="" μg="" of="" the="" antibody="" by="" the="" lal="">
• Label
  Unconjugated

• Western Blot
  0.2 µg/mL
  See below
• Flow Cytometry
  2.5 µg/10⁶ cells
  See below
• Immunohistochemistry
  5-15 µg/mL
  Perfusion fixed frozen sections of mouse intestine
• Agonist Activity
  Measured in a cytotoxicity assay using L-929 mouse fibrosarcoma cells in the presence of the metabolic inhibitor actinomycin D.
  The ED₅₀ for this effect is typically 0.05-0.15 μg/mL.
• CyTOF-ready
  Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.

• Reconstitution
  Reconstitute at 0.2 mg/mL in sterile PBS.
• Shipping
  The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
• 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.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

• References:
  1. Pfeffer, K. (2003) Cytokine Growth Factor Rev. 14:185.
  2. Hehlgans, T. and K. Pfeffer (2005) Immunology 115:1.
  3. Peschon, J.J. et al. (1998) J. Immunol. 160:943.
  4. Banner, D.W et al. (1993) Cell 73:431.
  5. Medvedev, A.E. et al. (1996) J. Biol. Chem. 271:9778.
  6. Chan, F.K. et al. (2000) Science 288:2351.
  7. Legler, D.F. et al. (2003) Immunity 18:655.
  8. Tellier, E. et al. (2006) Exp. Cell Res. 312:3969.
  9. Xanthoulea, S. et al. (2004) J. Exp. Med. 200:367.
  10. Jin, L. et al. (2000) J. Immunol. 165:5153.
  11. Gomez, M.I. et al. (2006) J. Biol. Chem. 281:20190.
  12. Islam, A. et al. (2006) J. Biol. Chem. 281:6860.
  13. Garton, K.J. et al. (2006) J. Leukoc. Biol. 79:1105.
  14. McDermott, M.F. et al. (1999) Cell 97:133.
  15. Schneider-Brachert, W. et al. (2004) Immunity 21:415.
  16. Lewis, M. et al. (1991) Proc. Natl. Acad. Sci. USA 88:2830.
• Long Name:
  Tumor Necrosis Factor Receptor I
• Entrez Gene IDs:
  7132 (Human); 21937 (Mouse); 25625 (Rat)
• Alternate Names:
  CD120a antigen; CD120a; FPF; p55; p55-R; p60; TNF RI; TNFARMGC19588; TNF-R; TNF-R1; TNFR1TBP1; TNFR55; TNF-R55; TNFR60; TNFRI; TNF-RI; TNF-R-I; TNFR-I; TNFRSF1A; tumor necrosis factor binding protein 1; Tumor necrosis factor receptor 1; tumor necrosis factor receptor 1A isoform beta; tumor necrosis factor receptor superfamily member 1A; tumor necrosis factor receptor superfamily, member 1A; tumor necrosis factor receptor type 1; Tumor necrosis factor receptor type I; tumor necrosis factor-alpha receptor

Background:

TNF receptor 1 (TNF RI; also called TNF R‑p55/p60, TNFRSF1A and CD120a) is a type I transmembrane protein that belongs to the TNF receptor superfamily (1, 2). TNF RI is widely expressed and is present on the cell surface as a trimer of 55 kDa subunits. It serves as a receptor for both TNF‑ alphaand TNF‑ beta /lymphotoxin. Each subunit contains four TNF‑ alphatrimer‑binding cysteine‑rich domains (CRD) in its extracellular domain (ECD) (1‑6). TNF‑ alphabinding to TNF R1 induces the sequestration of TNFRI in lipid rafts, where it activates NF kappa B and is cleaved by ADAM‑17/TACE (7, 8). Release of the 28‑34 kDa TNF RI ECD occurs constitutively, and in response to products of pathogens such as LPS, CpG DNA or S. aureus protein A (1, 7‑12). Full‑length TNF RI may also be released in exosome‑like vesicles (12). Such release helps to resolve inflammatory reactions as it down‑regulates cell surface TNF RI and provides soluble TNF RI to bind TNF‑ alpha(6, 13, 14). Exclusion from lipid rafts causes endocytosis of TNF RI complexes and induces apoptosis (7, 15). Although there is a second receptor for TNF‑ alpha(TNF R2), TNF RI is thought to mediate most of the cellular effects of TNF‑ alpha(3). TNF R1 is essential for proper development of lymph node germinal centers and Peyer’s patches, and for combating intracellular pathogens such as Listeria monocytogenes (1‑3). Mouse TNF RI is a 454 amino acid (aa) protein that contains a 21 aa signal sequence and a 191 aa ECD with a PLAD domain (6). This mediates constitutive trimer formation. The PLAD domain is followed by four CRDs, a 23 aa transmembrane domain, and a 219 aa cytoplasmic sequence that contains a neutral sphingomyelinase activation domain and a death domain (16). The ECD of mouse TNF RI shows 67%, 70%, 64%, 70% and 88% aa identity with canine, feline, procine, human and rat TNF RI, respectively; and it shows 23% aa identity with the ECD of TNF RII.