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SnO(2)-ZnSn(OH)(6): a novel binary affinity probe for global phosphopeptide detection.
Li-Ping Li1, Tao Zheng, Lin-Nan Xu
1Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Institute of Analytical Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China.
New affinity probes, zinc tin hydroxide (ZnSn(OH)6) and tin dioxide-zinc tin hydroxide (SnO2-ZnSn(OH)6), significantly improve phosphopeptide detection. These materials enhance multi-phosphopeptide enrichment for better global analysis.
Area of Science:
- Materials Science
- Analytical Chemistry
- Biochemistry
Background:
- Phosphopeptide enrichment is crucial for studying protein phosphorylation.
- Existing methods face challenges in sensitivity and coverage.
- Novel affinity materials are needed to advance phosphoproteomics.
Purpose of the Study:
- To introduce ZnSn(OH)6 and SnO2-ZnSn(OH)6 as novel affinity probes for phosphopeptide enrichment.
- To evaluate two enrichment strategies: serial and single-run binary-component.
- To enhance multi-phosphopeptide enrichment and global phosphopeptide detection.
Main Methods:
- Synthesis and characterization of ZnSn(OH)6 and SnO2-ZnSn(OH)6 materials.
- Application of serial enrichment using ZnSn(OH)6 and SnO2.
- Application of single-run enrichment using binary-component SnO2-ZnSn(OH)6.
- Evaluation of enrichment efficiency and phosphopeptide detection using mass spectrometry.
Main Results:
- ZnSn(OH)6 and SnO2-ZnSn(OH)6 demonstrated effectiveness as affinity probes.
- Both serial and single-run strategies enhanced multi-phosphopeptide enrichment.
- The binary-component SnO2-ZnSn(OH)6 in a single run significantly improved global phosphopeptide detection.
- These novel materials offer a promising approach for phosphoproteomic analysis.
Conclusions:
- ZnSn(OH)6 and SnO2-ZnSn(OH)6 represent a new class of affinity materials for phosphopeptide enrichment.
- The proposed enrichment strategies effectively enhance the identification of phosphopeptides.
- These advancements contribute to improved capabilities in global phosphoproteomics.
