Custom Peptide Purification Services

MtoZ Biolabs provides custom peptide purification services using multidimensional chromatography, separation, and mass spectrometry verification technologies to achieve high-purity peptide preparation. These services offer stable, reliable, and reproducible peptide products for structural characterization, functional studies, and downstream development for research institutions and biopharmaceutical companies.

 

The Technique of Peptide Purification

Peptide purification is based on differences in hydrophobicity, polarity, charge state, molecular weight, and other physicochemical properties. High efficiency separation is achieved through different chromatographic systems. MtoZ Biolabs mainly provides the following peptide purification technologies:

 

Reverse-phase HPLC Peptide Purification Service

Uses hydrophobic interactions for separation and is the most common method for peptide purification. By adjusting the organic solvent gradient, impurities, truncated peptides, and oxidized products can be efficiently removed.

 

Normal-phase HPLC Peptide Purification Service

Uses polarity differences as the basis for separation and is suitable for highly polar or structurally unique peptides. It is complementary to reverse phase methods.

 

HILIC-Based Peptide Fractionation Service

Uses polar interactions under high organic solvent conditions to achieve high resolution fractionation of peptides. It is commonly used for proteomics sample preparation.

 

Ion Exchange Chromatography Peptide Purification Service

Relies on peptide isoelectric points and charge states to achieve highly selective separation. It is suitable for peptides with similar pI values or sequences.

 

SCX-Based Peptide Fractionation Service

A strong cation exchange method that separates peptides based on the number of positive charges. It is widely used for peptide prefractionation in proteomics.

 

Size Exclusion Chromatography Peptide Purification Service

Uses differences in molecular size for separation and is suitable for removing aggregates, degradation products, and small molecule impurities.

 

Partition Chromatography Peptide Purification Service

Uses distribution coefficient differences between two phases to separate peptides. It is commonly used for initial purification or combined with other technologies.

 

High pH Reversed-Phase Peptide Fractionation Service

Uses reverse phase chromatography under high pH conditions to achieve orthogonal fractionation. This significantly improves proteome coverage and is commonly used in deep proteomics analysis.

 

These technologies can be applied individually or combined in multidimensional workflows to meet the complexity and purity requirements of different peptide samples.

 

Custom Peptide Purification Services at MtoZ Biolabs

1. Custom Peptide Purification Service

MtoZ Biolabs provides end-to-end customized purification services from crude peptides to high-purity final products. Key features include:

• Suitable for linear peptides, cyclic peptides, modified peptides, hydrophobic peptides, and long peptides

• Multiple purity levels available, such as greater than 70 percent, greater than 85 percent, greater than 90 percent, and greater than 95 percent

• Supports removal of truncated peptides, unreacted materials, oxidized species, dimers, and impurities

• Applicable to analytical scale, preparative scale, and large-scale purification

 

2. Proteomics-level peptide separation and purification

For complex peptide samples generated in proteomics experiments, MtoZ Biolabs provides:

• High-resolution peptide fractionation based on HILIC, SCX, and high pH RP

• Purification, desalting, and impurity removal of digested peptides

• Selection and capture of specific peptides

• This service significantly improves LC-MS-MS detection sensitivity and proteome coverage.

 

Workflow of Custom Peptide Purification Services



 

Why Choose MtoZ Biolabs

☑️ Multiplatform chromatographic capability: Provides RP, HILIC, SCX, and SEC based peptide separation to cover diverse peptide properties.

☑️ Experienced technical team: Familiar with purification strategies for hydrophobic peptides, long peptides, acidic or basic peptides, and modified peptides.

☑️ Adaptable to diverse research needs: Supports both synthetic peptide purification and deep proteomics fractionation.

☑️ Advanced mass spectrometry platforms: Equipped with Orbitrap Fusion Lumos, Q Exactive HF X, and timsTOF Pro high-resolution mass spectrometry systems to provide accurate and stable molecular weight confirmation and quality evaluation.

☑️ One-Time Charge: Our pricing is transparent with no hidden fees or additional costs.

 

Applications of Custom Peptide Purification Services

1️⃣ Quality assessment and structural confirmation of synthetic peptides

2️⃣ Research applications for cyclic peptides, modified peptides, and therapeutic peptides

3️⃣ In vitro activity assays, binding studies, and mechanism investigations

4️⃣ Digested peptides for proteomics and PTM analysis

5️⃣ Biomarker discovery and target validation

6️⃣ Drug screening and lead optimization

 

Deliverables

1. Purified peptide products in lyophilized or solution form

2. HPLC purity report

3. LC MS or MS MS spectra

4. Brief method description and related experimental records

5. Optional fractionation flowcharts or preprocessing information

All files can be provided in PDF, Excel, or image formats

 

FAQs

Q1: What is the service's general workflow?

 



Q2: What data formats are provided?

MtoZ Biolabs provides multiple standard scientific data formats to support analysis, documentation, and downstream applications. Typically delivered materials include:

• HPLC purity chromatograms in PDF or high-resolution formats such as TIFF or PNG

• LC MS or MS MS raw data files compatible with major analysis platforms

• Processed analytical results in Excel or CSV, including purity tables and molecular weight confirmation

• PDF summary report including methods, quality control information, chromatographic conditions, and key findings

Additional file formats or structured documentation can be provided upon request for publication or regulatory purposes.

 

Q3: How should I prepare my samples?

To ensure accurate and reproducible peptide purification results, please prepare samples as follows:

1. Sample type: Accepted materials include crude synthetic peptides, partially purified peptides, modified peptides, long peptides, cyclic peptides, and digested peptides from proteomics workflows.

  2. Sample purity and condition: Samples should be free of particulate matter and precipitation. Avoid high concentrations of salts, surfactants, or organic solvents that may interfere with chromatographic separation or LC-MS detection.

3. Sample quantity: Recommended amount is 2 to 5 mg of crude peptide or an equivalent amount of peptide mixture. Larger quantities may be required for high-purity or multifraction projects.

4. Storage and shipping: Lyophilized powder is preferred. Store solutions at minus 20 degrees Celsius or minus 80 degrees Celsius and ship on dry ice to maintain stability.

5. Sample information file: Provide peptide sequence, modification information, theoretical molecular weight, initial purity, buffer composition, solubility information, and target purity requirements.

 

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

 

If you are unsure about your sample preparation, our technical team can provide personalized pre-analysis consultation and a sample submission guide to help you optimize preparation and shipping conditions.

 

Start Your Project with MtoZ Biolabs

If you are conducting peptide-related research or require high-purity peptide products, we welcome you to contact us. MtoZ Biolabs will support your project with rigorous technology and dedicated scientific assistance.