TNF RI/TNFRSF1A Protein, Rat (HEK293, His)

TNFRSF1A (TNF RI) protein has a high ability to bind with tumor necrosis factor-alpha (TNF-α). TNFRSF1A is a STAT3 target gene that regulates the NF-κB pathway. TNFRSF1A activate NF-κB, mediate apoptosis, and function as a regulator of inflammation. TNFRSF1A Protein, Rat (HEK293, His) is expressed by HEK293 and has a transmembrane region (M1-A211) with a His tag at the C-terminus^[1].

TNFRSF1A (TNF RI) protein is a single-pass type I membrane protein belonging to the tumor necrosis factor (TNF) family. TNFRSF1A is the major signaling receptor for TNF-α. TNFRSF1A protein is a multifunctional cytokine, which is synthesized by almost all cells^[1][2].
The sequence of amino acids in TNFRSF1A from different species is very different (less than 85% similarity among human, rat and mouse).
TNFRSF1A contains a protein-protein interaction domain, called death domain (DD), can recruit other DD-containing proteins and couples the death receptors to caspase activation and apoptosis. Both soluble and membrane-bound forms of the cytokine can activate TNFRSF1A. TNFRSF1A induces cellular inflammatory damage and apoptosis by participating in mTOR, JNK, IKK, caspase 3, MAPK, and NF-κB pathways^[1][3][4].

Measured by its ability to inhibit the TNF-alpha mediated cytotoxicity in the L-929 mouse fibroblast cells in the presence of the metabolic inhibitor actinomycin D. The ED₅₀ for this effect is 26.87 ng/mL in the presence of 0.1 ng/mL of recombinant human TNF-alpha, corresponding to a specific activity is 3.72×10⁴ units/mg.

Rat

HEK293

C-His

P22934/NP_037223.1 (L30-A211)

25625  [NCBI]

Extracellular Domain

LVPSLGDREKRDNLCPQGKYAHPKNNSICCTKCHKGTYLVSDCPSPGQETVCEVCDKGTFTASQNHVRQCLSCKTCRKEMFQVEISPCKADMDTVCGCKKNQFQRYLSETHFQCVDCSPCFNGTVTIPCKEKQNTVCNCHAGFFLSGNECTPCSHCKKNQECMKLCLPPVANVTNPQDSGTA

Approximately 30-40 kDa, based on SDS-PAGE under reducing conditions, due to the glycosylation.

≥ 95%, as determined by reducing SDS-PAGE.

Lyophilized powder.

Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.4.

<1 EU/μg, determined by LAL method.

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH₂O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Room temperature in continental US; may vary elsewhere.

• [1]. Wajant H, et, al. Tumor necrosis factor signaling. Cell Death Differ. 2003 Jan;10(1):45-65.  [Content Brief]

  [2]. Fu Q, et, al. miR-29a up-regulation in AR42J cells contributes to apoptosis via targeting TNFRSF1A gene. World J Gastroenterol. 2016 May 28;22(20):4881-90.  [Content Brief]

  [3]. Zhou S, et, al. Bioinformatics Analysis Identifies TNFRSF1A as a Biomarker of Liver Injury in Sepsis TNFRSF1A is a Biomarker for Septic Liver Injury. Genet Res (Camb). 2022 Oct 15;2022:1493744.  [Content Brief]

  [4]. Egusquiaguirre SP, et, al. The STAT3 Target Gene TNFRSF1A Modulates the NF-κB Pathway in Breast Cancer Cells. Neoplasia. 2018 May;20(5):489-498.  [Content Brief]