Human CD95/APO-1/TNFRSF6 (His Tag) recombinant protein

Human CD95/APO-1/TNFRSF6 (His Tag) recombinant protein

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CD95 (APO-1/Fas) is an important inducer of the extrinsic apoptosis signaling pathway and therapy induced apoptosis of many tumor cells has been linked to the activity of CD95. is a prototype death receptor characterized by the presence of an 80 amino acid death domain in its cytoplasmic tail. This domain is essential for the recruitment of a number of signaling components upon activation by either agonistic anti-CD95 antibodies or cognate CD95 ligand that initiate apoptosis. The complex of proteins that forms upon triggering of CD95 is called the death-inducting signaling complex (DISC). The DISC consists of an adaptor protein and initiator caspases and is essential for induction of apoptosis. CD95 is also crucial for the negative selection of B cells within the germinal center (GC). Impairment of CD95-mediated apoptosis results in defective affinity maturation and the persistence of autoreactive B-cell clones. Changes in the expression of CD95 and/or its ligand CD95L are frequently found in human cancer. The downregulation or mutation of CD95 has been proposed as a mechanism by which cancer cells avoid destruction by the immune system through reduced apoptosis sensitivity. Thus, CD95 has therefore been viewed as a tumor suppressor. CD95 has been reported to be involved in the activation of NF-kappaB, MAPK3/ERK1, MAPK8/JNK, and the alternate pathways for CTL-mediated cytotoxicity. Accordingly, this protein is implicated in the pathogenesis of various malignancies and diseases of the immune system. The CD95/CD95L system was implicated in the etiology of inflammatory bowel disease (IBD) based, primarily, on the finding that CD95 is highly expressed in the intestinal epithelial cells and that epithelial apoptosis is increased in IBD.

Tumor necrosis factor receptor superfamily member 6

APO1; LPR; APT1; CD95; TNFRSF6; AI196731; TNFR6; ALPS1A; FAS1; FASTM; FAS; APO-1

P25445

FAS; APT1; FAS1; TNFRSF6

Human Cells

A DNA sequence encoding the extracellular domain (Met 1-Asn 173) of human FAS antigen (NP_000034.1) was expressed, with a C-terminal polyhistidine tag.

Human

The secreted recombinant human FAS comprises 159 amino acids and has a predicted molecular mass of 18.2 kDa. In SDS-PAGE under reducing conditions, the apparent molecular mass of rhFAS is approximately 30-40 kDa due to glycosylation.

> 95 % as determined by SDS-PAGE

Measured by its ability to inhibit Fas Ligand induced apoptosis of Jurkat human acute T cell leukemia cells.
The ED₅₀ for this effect is typically 3-15 μg/mL in the presence of 20 ng/mL recombinant human Fas ligand.