MtoZ Biolabs provides a High-Resolution Phosphoproteomics Service that covers the full process from protein extraction, phosphopeptide enrichment, to high-resolution mass spectrometry detection and site identification, helping research teams reliably analyze phosphorylation modifications in complex samples and improve the efficiency and data value of mechanism studies.
What is Protein Phosphorylation
Protein phosphorylation is a reversible post-translational modification process catalyzed by kinases, where a phosphate group is covalently attached to specific sites on a protein (such as Ser/Thr/Tyr). This modification can cause direct changes in the protein's charge, conformation, activity, and interaction behavior. It is fundamental in signal transduction, metabolic regulation, cell cycle, immune responses, and disease mechanism studies. The value of phosphorylation research includes:
- Key regulatory levels in cellular signal networks
- Reflecting molecular events in response to stimuli, inhibition, or dynamic responses
- Revealing changes in protein functionality and interactions
- Understanding imbalanced signal pathways and their pathological associations
Figure 1. Schematic Diagram of Protein Phosphorylation
High-Resolution Phosphoproteomics Service at MtoZ Biolabs
The high-resolution phosphoproteomics service at MtoZ Biolabs integrates high-resolution Orbitrap mass spectrometry with mature phosphopeptide enrichment strategies to achieve amino acid-level phosphorylation site localization and qualitative assessment. The service includes:
1. Phosphopeptide Enrichment and Validation
Using IMAC, TiO₂, and antibody immunoaffinity magnetic bead enrichment with enrichment validation, reducing non-phosphorylated background interference and increasing phosphopeptide identification coverage.
2. Precise Phosphorylation Site Identification
Accurately locates Ser/Thr/Tyr phosphorylation sites in individual proteins or complex proteomes, providing residue-level localization and confidence scores for signal node verification.
3. Phosphorylation Modification Quantification
Provides Label-Free, TMT, and PRM/MRM-compatible quantification matrices and trend assessments to compare phosphorylation levels before and after experimental treatment or across groups.
4. Customized Analysis
MtoZ Biolabs offers customized phosphoproteomics analysis, adjusting comparisons and result presentations according to project needs, making data more useful and easier to interpret.
Workflow of High-Resolution Phosphoproteomics Service
Why Choose MtoZ Biolabs
1. Advanced High-Resolution Orbitrap Instruments
MtoZ Biolabs uses high-resolution Orbitrap mass spectrometers combined with ion mobility separation to achieve deeper coverage, wider dynamic range, and more reliable phosphorylation site identification.
2. Mature Enrichment Strategies
Our proven enrichment techniques, such as antibody enrichment, IMAC, TiO₂, and HILIC, provide high signal-to-noise ratios and reduce background interference.
3. Extensive Experience in Phosphorylation Analysis
Our team specializes in PTM proteomics, with extensive project experience in phosphopeptide enrichment, quantification, and modification site localization.
4. One-Time Charge
Our pricing model is transparent with no hidden fees or additional costs.
5. Stable Project Delivery Commitment
MtoZ Biolabs ensures clearly defined timelines, complete datasets, and well-structured outputs that meet quality, reproducibility, and publication requirements.
Applications of High-Resolution Phosphoproteomics Service
- Signal pathway research
- Kinase-substrate network screening
- Disease mechanism research
- Protein complex and PTM-dependent protein interaction identification
- Early peptide/protein drug response mechanism evaluation
Sample Submission Guidelines
For more information, please refer to Sample Submission Guidelines for Proteomics and Sample Submission Guidelines for Metabolomics.
Deliverables
- Raw MS data files
- Phosphorylation site identification and quantification matrices
- Summary reports
- High-resolution figures
- Optional structured publication-ready layouts
FAQs
Q1: What types of samples are suitable?
MtoZ Biolabs accepts a wide range of sample types, including cell lysates, tissue specimens, purified proteins, phosphopeptide-enriched fractions, and biofluid samples. Non-protein or samples with extreme salt interference are not recommended.
Q2: What is the service's general workflow?
Q3: What data formats are provided?
MtoZ Biolabs delivers results in multiple standard formats to ensure compatibility with various analysis and visualization tools. Typical deliverables include:
- Raw MS data files (.RAW)
- Phosphorylation site analysis results in CSV or Excel
- Summary reports in PDF format
- High-resolution figures (TIFF or PNG)
Additional formats are available upon request.
Q4: How should I prepare my samples?
MtoZ Biolabs recommends:
- High-purity, particle-free samples
- Controlled salts, no excess detergents or organic solvents
- Protease inhibitor plus phosphatase inhibitor
- Storage at -80°C, sealed containers, dry ice shipping
- Full documentation, including sample origin, buffer, method, and research goal
If unsure, consultation and structured sample preparation guides can be requested.
Start Your Project with MtoZ Biolabs
Whether you're exploring kinase signaling networks or studying phosphorylation-driven molecular mechanisms, MtoZ Biolabs' high-resolution phosphoproteomics service provides reliable data support and clear signal interpretation for your project. Contact us today to initiate your experiment or request sample submission guidelines.