General description
An exocyclic cysteine-knot peptide that specifically antagonizes Fas/FasL-mediated cellular apoptotic signals (58% reduction of FasL-induced apoptosis in Jurkat cells at 1 mg/ml). Binds to FasL (Cat. Nos. PF033 and PF092) and Fas (CD95/APO-1) with comparable affinity (Kd = 11.2 & 13.2 µM, respectively), resulting in disabled receptor ensembles and altered signaling. Shown to prevent Con A (Cat. No. 234567)-induced liver injury in a murine hepatitis model in vivo. Does not bind to TNF-α or TNFR.
An exocyclic cystine-knot peptide that specifically antagonizes Fas/FasL-mediated cellular apoptotic signals (58% reduction of FasL-induced apoptosis in Jurkat cells at 1 mg/ml). Binds to FasL (Cat. Nos. PF033 and PF092) and Fas (CD95/APO-1) with comparable affinity (Kd = 11.2 & 13.2 µM, respectively), resulting in disabled receptor ensembles and altered signaling pathways. Shown to prevent Con A (Cat. No. 234567)-induced liver injury in a murine hepatitis model in vivo. Does not bind to TNF-α or TNFR.
Biochem/physiol Actions
Cell permeable: no
Kd = 11.2 & 13.2 µM for FasL and Fas (CD95/APO-1), respectively
Primary Target
Fas/FasL-mediated cellular apoptotic signals
Product does not compete with ATP.
Reversible: no
Packaging
Packaged under inert gas
Physical form
Supplied as a trifluoroacetate salt.
Preparation Note
Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.
Other Notes
Carmona, E.M., et al. 2006. J. Immunol.177, 459.
Hasegawa, A., et al. 2004. Proc. Natl. Acad. Sci. USA101, 6599.
H₂N-Tyr-Cys*-Asp-Glu-His-Phe-Cys*-Tyr-CO₂H, Cyclic [disulfide bond between Cys-Cys]
Legal Information
Sold under license of U.S. Patent 7,288,519.
CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
Disclaimer
Toxicity: Standard Handling (A)
| Quality Segment | 100 |
| assay | ≥98% (HPLC) |
| form | lyophilized powder |
| manufacturer/tradename | Calbiochem® |
| storage condition | OK to freeze,desiccated (hygroscopic),protect from light |
| color | white |
| solubility | DMSO: 5 mg/mL |
| shipped in | ambient |
| storage temp. | 2-8°C |
