Data provided by National Institute of Standards and Technology
Recent advances in methodology have made phosphopeptide analysis a tractable problem for many proteomicists. There are now a wide variety of robust and inexpensive enrichment strategies to generate phosphoproteomes, while free or inexpensive software tools for quantitation and site localization have simplified phosphoproteome analysis workflow tremendously. As a research group under the Association for Biomolecular Resource Facilities (ABRF) umbrella, the Proteomics Standards Research Group (sPRG) has worked to develop a multipathway phosphopeptide prototype mixture based on a pool of heavy-labeled phosphopeptides designed to enable researchers to rapidly develop assays. This prototype mixture contains 131 mass spectrometry vetted phosphopeptides specifically chosen to cover as many known biologically interesting phosphosites as possible from seven different signaling networks: AMPK signaling, death and apoptosis signaling, ErbB signaling, insulin/IGF-1 signaling, mTOR signaling, PI3K/AKT signaling, and stress (p38/SAPK/JNK) signaling. We describe a characterization of the standard spiked into a HeLa tryptic digest stimulated with both EGF and IGF1 to activate the MAPK and PI3K/AKT/mTOR pathways. We demonstrate a comparison of phosphoproteomic profiling of HeLa performed independently by the co-authors with this prototype mixture with data independent acquisition.
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Updated: 2024-02-22
Metadata Last Updated:
2022-11-09 00:00:00
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gas phase fractionation
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| Title | Gas phase fractionation data independent acquisition analysis of a phosphopeptide mixture |
|---|---|
| Description | Recent advances in methodology have made phosphopeptide analysis a tractable problem for many proteomicists. There are now a wide variety of robust and inexpensive enrichment strategies to generate phosphoproteomes, while free or inexpensive software tools for quantitation and site localization have simplified phosphoproteome analysis workflow tremendously. As a research group under the Association for Biomolecular Resource Facilities (ABRF) umbrella, the Proteomics Standards Research Group (sPRG) has worked to develop a multipathway phosphopeptide prototype mixture based on a pool of heavy-labeled phosphopeptides designed to enable researchers to rapidly develop assays. This prototype mixture contains 131 mass spectrometry vetted phosphopeptides specifically chosen to cover as many known biologically interesting phosphosites as possible from seven different signaling networks: AMPK signaling, death and apoptosis signaling, ErbB signaling, insulin/IGF-1 signaling, mTOR signaling, PI3K/AKT signaling, and stress (p38/SAPK/JNK) signaling. We describe a characterization of the standard spiked into a HeLa tryptic digest stimulated with both EGF and IGF1 to activate the MAPK and PI3K/AKT/mTOR pathways. We demonstrate a comparison of phosphoproteomic profiling of HeLa performed independently by the co-authors with this prototype mixture with data independent acquisition. |
| Modified | 2022-11-09 00:00:00 |
| Publisher Name | National Institute of Standards and Technology |
| Contact | mailto:[email protected] |
| Keywords | gas phase fractionation , phosphopeptides , post-translational modification localization |
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