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PTMScan® Control Peptides Multi-Pathway
Proteomic Analysis Products
Cell Extracts

PTMScan® Control Peptides Multi-Pathway #49120

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Annotated tandem mass spectrum (MS2) of the PTMScan® Control Peptides Multi-Pathway component: LAS(p)PELE[R].
Annotated tandem mass spectrum (MS2) of the PTMScan® Control Peptides Multi-Pathway component: GY(p)VPATI[K].
Annotated tandem mass spectrum (MS2) of the PTMScan® Control Peptides Multi-Pathway component: LNT(p)SDFQ[K].
Peptides included in the PTMScan® Control Peptides Multi-Pathway mix.  All peptides are stable-isotope labeled, designated by bracketed R or K, and contain a phosphate group designated by parentheses.
Extracted ion chromatograms of PTMScan® Control Peptides Multi-Pathway added at supplied concentration (1X at 200 fmol) to mouse liver peptides prior to immunoaffinity enrichment using PTMScan® Multi-Pathway Enrichment Kit #75676.  Desalted peptides were analyzed on Q Exactive mass spectrometer and resolved using a 120 min reversed phase gradient from 7.5% to 32% acetonitrile on a C18 column.  The peak corresponding to the specific Control Peptide is marked with retention time and observed precursor mass, with peak height reported as the normalized level (NL) for each row per panel.

Product Usage Information

Use with Cell Signaling Technology’s PTMScan® kit protocol from the Immunoaffinity Purification (IAP) step.  Because the optimal amount of PTMScan® Control Peptides Multi-Pathway for each user’s experiments will depend on unique factors, such as mass spectrometer sensitivity, users may dilute these control peptides as needed.

1. Aliquot PTMScan® Control Peptides Multi-Pathway for storage as single-use units at -20°C or proceed to immediate usage.  
2. Resuspend sample peptides in the appropriate buffer and volume, e.g., 1.4 mL of PTMScan® IAP Buffer (1X).
3. Clear sample peptides by centrifugation.
4. Transfer clarified sample peptides to tubes containing IAP beads.
5. Add 10 µL of PTMScan® Control Peptides Multi-Pathway to IAP beads and sample peptides and mix well. 
6. Continue with PTMScan® workflows at the 2-hour incubation step.
7. Detect PTMScan® Control Peptides Multi-Pathway in the LCMS data file.


This product is stable for 12 months when stored at -20°C. Aliquot to avoid multiple freeze/thaw cycles.

Product Description

The PTMScan® Control Peptides Multi-Pathway enable quality control of immunoaffinity enrichment performance using PTMScan® workflows.  These synthetic peptides contain a specific post-translational modification (PTM) that can be enriched by the associated PTMScan® immunoaffinity purification (IAP) beads, as well as a stable heavy isotope that can be distinguished from endogenous peptides by the mass spectrometer.  


The PTMScan® Multi-Pathway Enrichment Kit #75676 introduces Cell Signaling Technology's PTMScan® Direct Multi-Pathway proteomics service to the end user in a convenient and easy-to-use kit format. Based on the patented PTMScan® method, the kit includes an array of site-specific antibodies conjugated to protein A beads for peptide immunoaffinity purification. The kit is designed for the screening, discovery, and quantitation of thousands of proteins and phosphorylation sites on hundreds of critical signaling proteins spanning multiple signaling pathways. These include cell cycle and checkpoint control, PI3K/Akt signaling, MAPK and JNK cascades, T cell and B cell receptor signaling, as well as some housekeeping targets. The kit can also be used as the enrichment reagent for customized targeted assays by including heavy isotope-labeled synthetic peptides to a subset of validated targets.

Limited Uses

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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.
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To Purchase # 49120
Cat. # Size Qty. Price
100 µl  (10 assays)