Article ; Online: Investigating Phosphorylation Patterns of the Ion Channel TRPM7 Using Multiple Extraction and Enrichment Techniques Reveals New Phosphosites.
Journal of the American Society for Mass Spectrometry
2019 Volume 30, Issue 8, Page(s) 1359–1367
Abstract: ... the phosphorylation patterns of the ion channel TRPM7 which is involved in a range of critical physiological functions ... The study of membrane proteins, and in particular ion channels, is crucial to understanding ... SDS solubilization coupled with SCAD and S-Trap digestion methods to eliminate detergent interference ...
| Abstract | The study of membrane proteins, and in particular ion channels, is crucial to understanding cellular function. Mass spectrometry-based approaches including bottom-up strategies to study membrane proteins have been successful yet still can remain challenging. In this study, we sought to evaluate the phosphorylation patterns of the ion channel TRPM7 which is involved in a range of critical physiological functions. To overcome extraction obstacles associated with analyzing membrane proteins, we incorporated the use of 5% SDS solubilization coupled with SCAD and S-Trap digestion methods to eliminate detergent interference in downstream LC-MS/MS analysis. We found that the SCAD method was more efficient, yielding 84% of the overall identified proteins; however, the variability was greater than the S-Trap method. Using both methods together with TiO |
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| MeSH term(s) | Amino Acid Sequence ; Chromatography, Liquid ; HEK293 Cells ; Humans ; Phosphopeptides/analysis ; Phosphorylation ; Protein Serine-Threonine Kinases/chemistry ; TRPM Cation Channels/chemistry ; Tandem Mass Spectrometry | ||||||||||
| Chemical Substances | Phosphopeptides ; TRPM Cation Channels ; Protein Serine-Threonine Kinases (EC 2.7.11.1) ; TRPM7 protein, human (EC 2.7.11.1) | ||||||||||
| Language | English | ||||||||||
| Publishing date | 2019-05-28 | ||||||||||
| Publishing country | United States | ||||||||||
| Document type | Journal Article | ||||||||||
| ZDB-ID | 1073671-2 | ||||||||||
| ISSN | 1879-1123 ; 1044-0305 | ||||||||||
| ISSN (online) | 1879-1123 | ||||||||||
| ISSN | 1044-0305 | ||||||||||
| DOI | 10.1007/s13361-019-02223-5 | ||||||||||
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| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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