MtoZ Biolabs launches the Plant Peptide MS Identification Service based on high-resolution LC-MS/MS platforms and standardized plant sample preparation workflows to deliver accurate peptide identification from plant tissues, cells, and extractable peptide fractions. This service supports research areas such as plant functional peptide discovery, signaling peptide screening, and peptide-based agricultural product development, helping both academic and industrial clients obtain reliable peptide sequence information and basic physicochemical characteristics essential for downstream functional validation and mechanistic studies.

What Is Peptide MS Identification?

Peptide MS Identification refers to the use of mass spectrometry to determine the molecular weight, amino acid sequence, and potential modifications of peptide samples, followed by database searching to confirm peptide identity. Compared with chemical degradation or immunological methods, mass spectrometry offers higher sensitivity, higher throughput, and the ability to analyze complex mixtures. These advantages are particularly valuable for plant samples, where peptide species are diverse, abundance levels vary widely, and matrix components are highly complex.

Figure 1. Peptide MS Identification 

In plant research, peptide MS identification is used not only for discovering novel endogenous bioactive peptides but also for verifying the sequence accuracy, purity, and possible modifications of synthetic peptides, recombinant peptides, and processed peptide products. In studies involving plant processing, storage, or fermentation, this technique enables monitoring of peptide composition changes, providing reliable support for understanding bioactivity, quality stability, and functional mechanisms.

Plant Peptide MS Identification Service at MtoZ Biolabs

To meet the analytical needs of plant-derived peptides, MtoZ Biolabs provides an integrated Plant Peptide MS Identification Service encompassing sample pretreatment, peptide preparation, high-resolution LC-MS/MS acquisition, and database searching.

Our service covers:

• Identification of endogenous peptides in plant tissues, cells, or extracts
• Sequence confirmation and purity assessment of recombinant or engineered plant peptides
• Preliminary structural interpretation and assignment of major impurity peaks in plant peptide samples

During project execution, MtoZ Biolabs adjusts sample processing and MS acquisition parameters based on sample type and research objectives, ensuring both data reliability and application relevance.

Workflow of Plant Peptide MS Identification Service

Why Choose MtoZ Biolabs?

1. Advanced Mass Spectrometry Platforms

Powered by high-resolution instruments such as the Q Exactive HF and Orbitrap Fusion Lumos, we deliver robust peptide separation, stable signal acquisition, and reliable fragmentation data suitable for endogenous, recombinant, and processed plant peptides.

2. Optimized LC-MS/MS Strategies

Refined gradients, ionization conditions, and acquisition settings increase peptide coverage and sequence-matching efficiency across diverse sample types.

3. Plant-Compatible Sample Preparation System

Specialized workflows address plant-specific challenges such as pigments, polysaccharides, and polyphenols, improving the stability and reliability of MS detection.

4. Experienced Peptide Analysis Team

Our team brings extensive experience in peptide MS identification and plant omics research, enabling parameter adjustments that better support sequence confirmation, functional validation, and quality assessment.

5. One-Time Charge

Our pricing is transparent, with no hidden fees or additional costs.

Applications of Plant Peptide MS Identification Service

1. Plant Signaling and Defense Peptide Research

Supports identification of peptides associated with growth regulation, stress responses, and pathogen defense, enabling network construction and candidate molecule discovery.

2. Development of Peptide-Based Agricultural Formulations and Biostimulants

Provides sequence confirmation and purity assessment for synthetic or semi-synthetic plant functional peptides, supporting formulation optimization and quality control.

3. Peptide Composition Changes During Processing and Storage

Used to compare peptide profiles under different processing, storage, or fermentation conditions, helping elucidate the impact of external factors on peptide activity.

4. Supplementation and Validation for Plant Proteomics and Peptidomics

Serves as a complementary module for quantitative proteomics and PTM analysis, validating specific peptides derived from protein cleavage, functional domains, or biomarker peptides.

Deliverables

• Raw LC-MS/MS data files
• Peptide identification result tables
• Visual figures and annotated spectra
• Technical notes and method summaries

Start Your Project with MtoZ Biolabs

If your research involves plant-derived peptides or requires sequence confirmation, purity evaluation, or identity verification, MtoZ Biolabs is ready to assist. Our professional analytical support will help accelerate your project with reliable, high-quality data.

FAQs

Q1: What types of samples are suitable?

Common sample types include plant leaves, roots, stems, seeds, fruits, plant cell lines or suspension cells, crude peptide extracts, and purified or lyophilized plant peptides. As long as the sample can be stably preserved, contains detectable peptide levels, and does not severely inhibit ionization after proper cleanup, it can typically be analyzed.

Q2：What is the service's general workflow?

Q3: What data formats are provided?

MtoZ Biolabs provides results in multiple standard formats to ensure compatibility with various analysis and visualization tools for the Plant Peptide MS Identification Service. Deliverables typically include:

• Raw data files from LC-MS/MS platforms used for peptide identification

• Processed data tables (CSV or Excel format) containing identified peptide sequences, measured and theoretical masses, and basic annotation information

• Summary reports in PDF format, including analytical methods, quality control overview, and key identification results

• Figures and spectra in high-resolution image formats (TIFF or PNG), such as representative chromatograms and MS/MS spectra

Additional file formats or data structures can be provided upon request to meet specific research, data integration, or publication requirements.

Q4: How should I prepare my samples?

To ensure accurate and reproducible results for the Plant Peptide MS Identification Service, MtoZ Biolabs recommends preparing your samples according to the following guidelines:

• Sample Type: We accept a wide range of plant-related samples, including fresh or frozen plant tissues (leaves, roots, stems, seeds, fruits), plant cell pellets or suspensions, peptide extracts, partially purified peptide fractions, and synthetic or recombinant peptide solutions.
• Sample Purity: Samples should be as free as possible of particulates, excessive pigments, and high concentrations of salts, detergents, or organic solvents that could interfere with chromatographic separation or ionization in MS detection. If special buffers or additives are used, please provide detailed information.
• Volume Requirement: For peptide solutions, please provide sufficient volume to allow at least one full analysis and potential repeat runs, typically no less than 50–100 μL, depending on concentration. For plant tissues or cells, an adequate amount of material (for example 50–100 mg wet weight) is recommended to account for extraction and cleanup steps.
• Storage and Shipping: Store plant tissues and cells at −80°C after quick freezing, and store peptide solutions or lyophilized peptides at low temperature, avoiding repeated freeze-thaw cycles. Ship samples on dry ice in leak-proof containers to maintain sample integrity during transit.
• Documentation: Include detailed information such as plant species, tissue or cell type, sample preparation method, buffer composition, and the intended purpose of analysis (e.g., sequence confirmation, impurity profiling, or endogenous peptide identification).

For more information, please refer to Sample Submission Guidelines for Proteomics and Sample Submission Guidelines for Metabolomics.