Post-translational Modification Site Identification Service

MtoZ Biolabs offers Post-translational Modification Site Identification Service to provide accurate and comprehensive mapping of protein modification sites. Post-translational modifications (PTMs) regulate essential biological processes by altering protein activity, conformation, localization, and stability. Identifying specific modification sites is critical for understanding molecular mechanisms in signal transduction, disease pathogenesis, and therapeutic target validation.

Proteins can undergo various modifications such as phosphorylation, ubiquitination, acetylation, and glycosylation, each exerting distinct biochemical effects. Utilizing advanced liquid chromatography–tandem mass spectrometry (LC-MS/MS) platforms combined with optimized enrichment and quantitative strategies, MtoZ Biolabs delivers high-resolution, site-specific PTM information to support both discovery research and applied biopharmaceutical studies.

Services at MtoZ Biolabs

MtoZ Biolabs provides a comprehensive suite of Post-translational Modification Site Identification Services designed to map and characterize protein modification sites with precision. Our services cover a wide range of modification types, enabling detailed insights into protein regulation and molecular mechanisms.

Protein Phosphorylation Identification

Protein Ubiquitination Identification

Protein Acetylation Identification

Protein Glycosylation Identification

Protein ADP-Ribosylation Identification

Protein Citrullination Identification

Protein Proline Hydroxylation Identification

Protein AMPylation Identification

Protein S-Nitrosation Identification

Protein Disulfide Bond Formation Identification

Inhibitor Binding Site Determination

Chemical Adduct Site Determination

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Figure 1. Workflow of Post-translational Modification Site Identification

Each project follows a standardized analytical workflow to ensure accurate site localization, reproducible quantification, and reliable reporting. Tailored solutions are available to meet diverse research and development needs in proteomics, biopharmaceuticals, and chemical biology.

Sample Submission Suggestions

MtoZ Biolabs accepts diverse biological and protein samples for PTM site identification, including purified proteins, tissues, cells, and microbial extracts. Recommended sample amounts vary by modification type and sample origin, as outlined below:

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Note: Samples should be stored at −80 °C and shipped on dry ice to maintain modification stability. For detailed submission guidelines and project-specific consultation, please contact MtoZ Biolabs.

Applications

MtoZ Biolabs’ Post-translational Modification Site Identification Service supports a wide range of scientific and industrial studies, including:

1. Signal Transduction Research

Revealing phosphorylation or acetylation sites that regulate key signaling pathways.

2. Disease Mechanism Studies

Identifying modification patterns associated with cancer, neurodegeneration, or immune disorders.

3. Drug Discovery and Target Validation

Locating modification-dependent binding sites to guide therapeutic design.

4. Biomarker Discovery

Profiling PTMs to uncover disease-specific molecular signatures.

5. Functional Proteomics

Assessing how site-specific modifications affect protein structure and activity.

Why Choose MtoZ Biolabs?

MtoZ Biolabs combines deep proteomics expertise with advanced instrumentation to deliver precise, reproducible, and high-coverage post-translational modification site identification.

Our Key Strengths：

1. Comprehensive PTM Coverage

Identification of multiple modification types, including rare or low-abundance PTMs within a single workflow.

2. High-Resolution Detection

Utilization of Orbitrap and Q-TOF LC-MS/MS systems for accurate mass measurement and confident site localization.

3. Optimized Enrichment Strategies

Application of TiO₂, IMAC, and immunoaffinity capture methods to selectively enrich modified peptides.

4. Quantitative Comparison Capability

Integration of SILAC, TMT, or label-free quantification to evaluate relative PTM abundance across samples.

5. Advanced Bioinformatics Interpretation

Automated PTM site scoring, localization confidence analysis, and biological pathway mapping.

6. Customized Analytical Solutions

Flexible workflows tailored to diverse biological samples and specific research objectives.

Through Post-translational Modification Site Identification Service, MtoZ Biolabs provides actionable insights into protein regulation and modification dynamics, empowering studies in molecular biology, systems proteomics, and drug development.