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Immunohistochemical analysis of paraffin-embedded human colon using Cleaved Caspase-8 (Asp391) (18C8) RmAb #9496 in the presence of control peptide (left) or Cleaved Caspase-8 (Asp391) Blocking Peptide (right).

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Product Description

This peptide is used to block Cleaved Caspase-8 (Asp391) (18C8) Rabbit mAb #9496 reactivity in dot blot protocols.


Quality Control

The quality of the peptide was evaluated by reversed-phase HPLC and by mass spectrometry. The peptide blocks Cleaved Caspase-8 (Asp391) (18C8) Rabbit mAb #9496 by dot blot.

Product Usage Information

Use as a blocking reagent to evaluate the specificity of antibody reactivity in dot blot protocols.


Storage: Supplied in 20 mM potassium phosphate (pH 7.0), 50 mM NaCl, 0.1 mM EDTA, 1 mg/ml BSA and 5% glycerol. 1% DMSO. Store at –20°C.

Apoptosis induced through the CD95 receptor (Fas/APO-1) and tumor necrosis factor receptor 1 (TNFR1) activates caspase-8 and leads to the release of the caspase-8 active fragments, p18 and p10 (1-3). Activated caspase-8 cleaves and activates downstream effector caspases such as caspase-1, -3, -6, and -7. Caspase-3 ultimately elicits the morphological hallmarks of apoptosis, including DNA fragmentation and cell shrinkage.


1.  Muzio, M. et al. (1996) Cell 85, 817-27.

2.  Boldin, M.P. et al. (1996) Cell 85, 803-15.

3.  Fernandes-Alnemri, T. et al. (1996) Proc Natl Acad Sci U S A 93, 7464-9.


Entrez-Gene Id 841
Swiss-Prot Acc. Q14790


For Research Use Only. Not For Use In Diagnostic Procedures.
Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.

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Cleaved Caspase-8 (Asp391) Blocking Peptide