Render Target: SSR
Render Timestamp:
10/15/2026, 8:22:19 PM EDT
10/16/2026, 12:22:19 AM UTC
Commit: 6bb8e03c04ff513ea8e7325ce35abd2ab0759b0e
XML generation date: 2026-08-27 19:20:15.722
Product last modified at: 2026-08-28T07:00:58.935Z
Cell Signaling Technology Logo - Extra Large
View Featured Offers >>
1% for the planet logo
PDP - Template Name: PTMScan (with Pricing)
PDP - Template ID: *******57cbce3
  1. Products /
  2. Proteomic Analysis Products /
  3. PTMScan® Cleaved Caspase Substrate Motif [DE(T/S/A)D] Kit

PTMScan® Cleaved Caspase Substrate Motif [DE(T/S/A)D] Kit #12810

Additional Information

This product is intended for peptide enrichment and mass spectrometry analysis. To learn more about our Proteomics Kits and Services please answer a few questions for our Proteomics group.

Contact the CST Proteomics Group

    Product Information

    Product Usage Information

    Cells are lysed in a urea-containing buffer, cellular proteins are digested by proteases, and the resulting peptides are purified by reversed-phase solid-phase extraction. Peptides are then subjected to immunoaffinity purification using a PTMScan® Motif Antibody conjugated to protein A agarose beads. Unbound peptides are removed through washing, and the captured PTM-containing peptides are eluted with dilute acid. Reversed-phase purification is performed on microtips to desalt and separate peptides from antibody prior to concentrating the enriched peptides for LC-MS/MS analysis. CST recommends the use of PTMScan® IAP Buffer #9993 included in the kit.

    Storage

    Antibody beads supplied in IAP buffer containing 50% glycerol. Store at -20°C. Do not aliquot the antibody.

    Protocol

    Product Description

    PTMScan® technology employs a proprietary methodology from Cell Signaling Technology (CST) for post-translationally modified (PTM) peptide enrichment by immunoprecipitation using a specific agarose bead-conjugated antibody in conjunction with liquid chromatography-tandem mass spectrometry (LC-MS/MS) for quantitative profiling of PTM sites in cellular proteins. PTMs analyzed using this technology include phosphorylation, ubiquitination, acetylation, and methylation, among others. The methodology enables researchers to isolate, identify, and quantify large numbers of PTM cellular peptides. The workflow provides a global, unbiased overview of PTMs across cell and tissue samples of any species, regardless of modification site location. For more information on PTMScan products and services, please visit the Proteomics Resource Center.

    Background

    Apoptosis is a physiological process resulting in a highly regulated, programmed form of cell death that is a normal part of growth and development in multicellular organisms. Aspartic acid-directed cysteine proteases, caspases, are central to the apoptotic mechanism (1). An intrinsic pathway initiates the apoptotic cascade from signals originating within the cell, such as DNA damage, and an extrinsic pathway initiates apoptosis in response to extracellular signals, like FasL. In either case, initiator caspases, such as caspase-8 and 9, begin cleaving downstream substrates that include the effector caspases, such as caspase-3, the most prominent executioner caspase (2,3). These effector caspases amplify the apoptotic cascade to target many critical proteins needed for normal cell function. Apart from its role in developmental biology, the regulation of apoptosis has broad implications for the study of cancer, autoimmune, and infectious diseases among others (4). In the human proteome, there are thousands of known or putative caspase cleavage sites and all are cleaved at an aspartic acid residue, or, in rare cases, a glutamic acid residue. The resultant fragments containing a carboxy-terminal aspartate generally have the XEXD motif with some variation (5). The PTMScan® Cleaved Caspase Substrate Motif [DE(T/S/A)D] Kit provides a unique and sensitive method for quantifying hundreds of cleaved caspase substrates, including caspase-3 and 7, NEDD1, HDAC3, MCM4, Notch1, eIF2B, raptor, Bid, Smad6, NFAT90, and PTEN among others.

    Alternate Names

    caspase; motif

    Limited Uses

    Except as otherwise expressly agreed in a writing signed by a legally authorized representative of CST, the following terms apply to Products provided by CST, its affiliates or its distributors. Any Customer's terms and conditions that are in addition to, or different from, those contained herein, unless separately accepted in writing by a legally authorized representative of CST, are rejected and are of no force or effect.

    Products are labeled with For Research Use Only or a similar labeling statement and have not been approved, cleared, or licensed by the FDA or other regulatory foreign or domestic entity, for any purpose. Customer shall not use any Product for any diagnostic or therapeutic purpose, or otherwise in any manner that conflicts with its labeling statement. Products sold or licensed by CST are provided for Customer as the end-user and solely for research and development uses. Any use of Product for diagnostic, prophylactic or therapeutic purposes, or any purchase of Product for resale (alone or as a component) or other commercial purpose, requires a separate license from CST. Customer shall (a) not sell, license, loan, donate or otherwise transfer or make available any Product to any third party, whether alone or in combination with other materials, or use the Products to manufacture any commercial products, (b) not copy, modify, reverse engineer, decompile, disassemble or otherwise attempt to discover the underlying structure or technology of the Products, or use the Products for the purpose of developing any products or services that would compete with CST products or services, (c) not alter or remove from the Products any trademarks, trade names, logos, patent or copyright notices or markings, (d) use the Products solely in accordance with CST Product Terms of Sale and any applicable documentation, and (e) comply with any license, terms of service or similar agreement with respect to any third party products or services used by Customer in connection with the Products.

    For Research Use Only. Not for Use in Diagnostic Procedures.
    Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
    AcetylScan is a registered trademark of Cell Signaling Technology, Inc.
    MethylScan is a registered trademark of Cell Signaling Technology, Inc.
    NAThis product is supplied and sold under certain patents owned by Active Motif, US patents 9938524, 10689643, 11306307 and 12049622, and related patents in other countries, for purchaser’s internal research only, and may not be used for any commercial purpose, including the provision of services.
    All other trademarks are the property of their respective owners. Visit our Trademark Information page.