Recombinant Human Fas/CD95/TNFRSF6 Protein (Fc Tag)

Specifications

Catalog number

PKSH031751

Size / count

100 µg

Dry ice

No

Hazardous

No

Discontinued

No

Background

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. 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.

Synonyms

ALPS1A; APO-1; APT1; Apo-1 antigen; Apoptosis-mediating surface antigen FAS; CD95; FAS1; FASLG receptor; FASTM; TNFRSF6 and FAS; Tumor necrosis factor receptor superfamily member 6

UniProt

P25445

Accession Number

NP_000034.1

Expression System

HEK293 Cells

Tag

C-hFc

Sequence

Met 1-Glu 173

Applications

Cell culture

Field of Research

Cell biology; immunology

Endotoxin

< 1.0 EU per μg of the protein as determined by the LAL method.

Purity

> 95 % as determined by reducing SDS-PAGE.

Bioactivity

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 0.02-0.1 μg/mL in the presence of 20 ng/mL recombinant human Fas ligand.

Reconstitution

Please refer to the printed manual for detailed information.

Shipping Conditions

This product is provided as lyophilized powder which is shipped with ice packs.

Storage Conditions

Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80°C. Reconstituted protein solution can be stored at 4-8°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.

Calculated Molecular Weight

43.4 kDa

Observed Molecular Weight

55-60 kDa

Species

Human