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Recombinant Mouse BID (Caspase-8-cleaved) Protein, CF

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Summary
Reactivity MuSpecies Glossary
Applications Bioactivity
Format
Carrier-Free

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Recombinant Mouse BID (Caspase-8-cleaved) Protein, CF Summary

Details of Functionality
Measured by its ability to induce cytochrome c release from isolated mouse liver mitochondria. The typical EC50 for cytochrome c releasing activity is <100 nM. Cytochrome c is quantified using the Rat/Mouse Cytochrome c Quantikine® ELISA Kit (Catalog # MCTC0).
The EC50 for the desired application should be determined.
Uncleaved Recombinant Mouse BID is available (Catalog # 860-MB).
Source
E. coli-derived mouse BID protein
Met1-Asp195
Accession #
N-terminal Sequence
Met1 & Gly60
Protein/Peptide Type
Recombinant Proteins
Gene
Bid
Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain

Applications/Dilutions

Dilutions
  • Bioactivity
Theoretical MW
7 kDa (N-terminal fragment) & 15 kDa (C-terminal fragment).
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
SDS-PAGE
7 kDa and 15 kDa, under reducing and non-reducing conditions
Publications
Read Publications using
883-M8 in the following applications:

Packaging, Storage & Formulations

Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 6 months from date of receipt, -20 to -70 °C as supplied.
  • 3 months, -20 to -70 °C under sterile conditions after opening.
Buffer
Supplied as a 0.2 μm filtered solution in HEPES-KOH and KCl.
Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain
Assay Procedure
  • Recombinant Mouse BID Caspase-8-cleaved (Catalog # 883-M8)
  • Crude or enriched mouse liver mitochondria (See Preparation of mouse liver mitochondria at http://www.rndsystems.com/literature_cytochrome_c_release_assays_bcl-2.aspx)
  • BID Dilution Buffer: 25 mM HEPES-KOH (pH 7.4), 0.1 M KCl, 1 mg/mL fatty acid free BSA*
  • Mitochondria Buffer: 125 mM KCl, 0.5 mM MgCl2, 3.0 mM Succinic acid, 3.0 mM Glutamic acid, 10 mM HEPES-KOH,(pH7.4), 1 mg/mL BSA*, containing 25 μg/mL Leupeptin, 25 μg/mL Pepstatin, 3 μg/mL Aprotinin, 100 μM PMSF, and 10 μM Boc-Asp-FMK caspase inhibitor *Note: Protease inhibitors and BSA should be added to the buffer immediately prior to use. 
    BSA stock solution should be prepared at 100 mg/mL.
Note: All buffers, proteins and tubes should be kept on ice until indicated. Assay volumes are 75 μL and are combined in 0.5 mL Eppendorf tubes.
  1. Prepare dilutions of Recombinant Mouse BID Caspase-8-cleaved (MW: 22 kDa) in Dilution Buffer at concentrations of  500, 150, 50, 15, 5, 1.5, 0.5 and 0.15nM. The final concentration range will be 100 to 0.03 nM in a total reaction volume of 75 μL.
  2. Aliquot 15 μL of each of the BID dilutions to a series of tubes containg an additional 20 μL of Dilution Buffer and gently mix. 
  3. Initiate the reaction by adding 12 μL of mitochondria (approximately 25-30 μg) and an additional 28 μL of Mitochondria Buffer with added protease inhibitors and BSA to each tube.
  4. Two additional control samples must be run for each assay to determine the total amount of Cytochrome c that can be released from the mitochondria and the amount of spontaneously released Cytochrome c. Set up two samples containing only mitochondria and the appropriate buffers that have not been treated with any test proteins.
  5. Cap the tubes and gently mix the contents for 5-10 seconds. Incubate in a 30 °C water bath for 30 minutes.
  6. Total Cytochrome c in the assay should be determined by freezing the entire 75 μL reaction mix immediately after incubation at 30 °C.
  7. Centrifuge the remaining samples at 16,000 x g for 5 minutes at 2-8 °C. Remove and transfer a 50 μL aliquot of the supernatant to a new chilled tube. Samples may be analyzed immediately or stored at -20 °C in a manual defrost freezer.
  8. Measure the levels of Cytochrome c in these samples using the Rat/Mouse Cytochrome c Quantikine ELISA Kit (Catalog # MCTC0) . See the Preparation of Samples for the Cytochrome c ELISA at
    http://www.rndsystems.com/literature_cytochrome_c_release_assays-bcl2.aspx and additional instructions in the Rat/Mouse Cytochrome c Quantikine ELISA Kit product insert (Catalog # MCTC0).

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Recombinant Mouse BID (Caspase-8-cleaved) Protein, CF

  • apoptic death agonist
  • BH3 interacting domain death agonist
  • BH3-interacting domain death agonist
  • BID isoform ES(1b)
  • BID isoform L(2)
  • BID isoform Si6
  • BID
  • desmocollin type 4
  • FP497
  • Human BID coding sequence
  • MGC15319
  • MGC42355
  • p22 BID
  • tbid

Background

Bid is a 195 amino acid member of the Bcl‑2 family of proteins that regulates outer mitochondrial membrane permeability (1). Bid is a pro-apoptotic member that causes cytochrome c to be released from the mitochondria intermembrane space into the cytosol. In healthy cells Bid is cytosolic. In response to Fas ligand or TNF Bid is cleaved by Caspase-8 and it then relocates to the mitochondria outer membrane (2, 3). Cleavage of Bid by Caspase-8 generates a new N-terminal that contains a terminal glycine. It appears that the glycine is myristoylated and myristoylation serves to target Bid to the mitochondria (4). Bid may then interact with another pro-apoptotic Bcl‑2 family member Bak (5). Interaction of Bid with Bak causes altered mitochondrial membrane permeability. A 9-13 amino acid stretch called the BH3 region (Bcl‑2 homology region) appears to mediate the Bid interaction with other Bcl‑2 family members. Bid is neutralized by binding to the anti-apoptotic member Bcl‑xL.
  1. Gross, A. et al. (1999) Genes and Develop. 13:1899.
  2. Luo, X., et al. (1998) Cell 94:481.
  3. Li, H. et al. (1998) Cell 94:491.
  4. Zha, J. et al. (2000) Science 290:1761.
  5. Wei, M.C. et al. (2000) Genes Dev. 14:2060.
 

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Publications for BID (883-M8)(4)

We have publications tested in 2 confirmed species: Human, Mouse.

We have publications tested in 2 applications: Bioassay, Western Blot.


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Bioassay
(3)
Western Blot
(1)
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(1)
Mouse
(2)
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The use of apoptosis antibodies and controls in cell death research
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p53, the protein product of the tp53 gene, is one of the most widely studied tumor suppressor proteins in cancer research.  p53 is unique in that it demonstrates both tumor suppressive and tumor progressive properties depending on whether it is fu...  Read full blog post.

active/cleaved Caspase 2 - Inducing apoptosis in response to cellular stress
Caspase-2 is a highly conserved member of the caspase family involved in the initiation and execution of apoptosis. While its function is still poorly understood, caspase-2 is thought to be important for apoptosis in response to DNA damage, bacteri...  Read full blog post.

Bcl-2 - an antiapoptotic protein with an important role in cancer cell survival
B-cell lymphoma 2 (Bcl-2) protein is an oncogene that normally acts as an apoptotic inhibitor and localizes to the mitochondrial membrane where it prevents the release of cytochrome c. The Bcl-2 protein family consists of over 20 proteins each co...  Read full blog post.

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Bioinformatics

Gene Symbol Bid
Uniprot