JPT peptide synthesis covers custom peptide services, PepMix peptide pools, and microarrays from JPT Peptide Technologies. Compare pricing and QC options.
JPT peptide synthesis refers to the custom peptide production and peptide library services offered by JPT Peptide Technologies GmbH, a Berlin-based life-science supplier. The company is best known for PepMix overlapping peptide pools, PepStar peptide microarrays, and high-throughput custom peptides used in immunology, epitope mapping, and assay development. Those products are research reagents, not approved drugs, so any clinical or diagnostic use requires separate regulatory clearance.
What JPT Peptide Synthesis Covers
The catalog and services come from jpt peptide technologies, which builds its reputation on parallel, high-throughput synthesis rather than one-off milligram orders. Most customers fall into two groups: immunology labs that need hundreds or thousands of overlapping peptides, and research groups that need a small set of specific sequences with documented purity.
- Custom peptides - individual sequences with defined purity, quantity, and QC documentation.
- Peptide pools - overlapping libraries that cover an entire protein or antigen.
- Peptide microarrays - thousands of peptides screened on a single slide.
- Peptide libraries - pooled sets for screening, assay development, and epitope discovery.
Because the workflow is built around parallel synthesis, JPT is often a better fit for large library projects than for a single 10 mg peptide ordered on a tight deadline. Smaller orders are still possible, but the process is optimized for scale.
PepMix Peptide Pools and Overlapping Libraries
Most immune-monitoring labs order jpt peptide pools, sold under the PepMix brand, when they need broad antigen coverage for T-cell stimulation. A typical pool contains overlapping peptides, commonly 15-mers that overlap by 11 amino acids, spanning the full length of a target protein.
Overlapping design matters because T-cell epitopes are not predictable from sequence alone. By covering every possible frame, a pool lets a sample react to whichever epitope it recognizes, without the lab having to synthesize and test each candidate separately.
- ELISpot and intracellular cytokine staining
- T-cell expansion and proliferation assays
- Immune monitoring in vaccine and infection research
- Epitope mapping and antigen discovery
How JPT Peptide Synthesis Works Chemically
JPT peptides are produced by solid-phase peptide synthesis (SPPS), the standard method for building amino acid chains on a resin. The process uses Fmoc chemistry: each cycle couples one protected amino acid to the growing chain, then removes the protecting group so the next residue can attach.
Once the full sequence is assembled, the peptide is cleaved from the resin, purified, and lyophilized into a powder. Typical research peptides run from about 8 to 35 amino acids, and quality control generally includes high-performance liquid chromatography for purity plus mass spectrometry for identity.
Why sequence matters more than vendor claims
Difficult sequences, such as long hydrophobic stretches, multiple cysteines, or repeated residues, synthesize in lower yield and are harder to purify. A supplier that flags these risks up front is usually more useful than one that quotes the lowest number.
Custom Peptide Synthesis, Modifications, and QC
A standard custom peptide synthesis service includes cleavage from resin, purification to a chosen percentage, and a certificate of analysis. Purity tiers typically range from crude to greater than 98%, and every step up that ladder raises cost and reduces practical yield.
Common modifications requested alongside Custom Peptide Synthesis orders include:
- Biotin, fluorescent dyes, or affinity tags
- Phosphorylated, methylated, or acetylated residues
- Cyclic, stapled, or D-amino acid variants
- Carrier protein conjugation with KLH, BSA, or OVA
JPT also arrays peptides for screening, which is where the platform differs from a typical small-scale synthesis shop. For labs that need both a few dozen peptides and a documented QC package, that combination is often the deciding factor.
Peptide Synthesis Price: What Drives the Quote
The peptide synthesis price depends on four variables: length, purity, scale, and modification. A short crude peptide ordered at milligram scale is the cheapest option, while a 30-mer at 98% purity with a fluorescent label and gram-scale delivery can cost many times more.
As a rough, non-binding reference for the broader market:
| Order type | Typical purity | Relative cost |
|---|---|---|
| Short peptide, 8-15 residues | Crude to 70%+ | Low |
| Standard research peptide, 15-25 residues | 95%+ | Moderate |
| Long or labeled peptide, 25-40 residues | 98%+ | High |
| Peptide pool or array library | Research grade | Project-based quote |
JPT does not publish a public per-residue price list for most custom work; quotes are generated from the sequence and specifications. That is normal for library-scale projects, but it does mean getting a quote can take longer than an instant online calculator.
How JPT Compares With Other Peptide Suppliers
No single vendor wins every project. The table below summarizes how several well-known suppliers are usually positioned.
| Supplier | Common strength | Typical buyer |
|---|---|---|
| JPT Peptide Technologies | Overlapping pools, microarrays, high-throughput libraries | Immunology and epitope-mapping labs |
| GenScript | Broad catalog plus fast online custom quotes | General research labs |
| AnaSpec | Custom peptides, dyes, and assay reagents | Assay and labeling groups |
| ProteoGenix | Custom peptides bundled with antibody services | Labs needing peptide plus antibody |
| Bachem | Large-scale and GMP peptide manufacturing | Clinical and commercial programs |
Labs that collect several quotes often evaluate a mix of providers at once, especially when a project combines peptide reagents with antibody production. Turnaround, communication, and QC documentation frequently matter as much as the headline price.
Quality, Safety, and Regulatory Notes
JPT peptides are sold for research use only. JPT Peptide Technologies does not market its PepMix pools or custom peptides as approved vaccines, drugs, or diagnostics in the United States.
Purity data describes the peptide in the vial, not its performance in an assay. No supplier, including JPT, can guarantee that a custom peptide will bind a given antibody, stimulate a specific T-cell clone, or stay stable under every lab protocol.
Researchers handling human samples should follow institutional biosafety guidance, and any peptide candidate intended for human use must be evaluated by qualified clinicians and regulators first.
Choosing the Right Approach
Pick JPT when a project needs overlapping coverage, arrayed screening, or a large parallel library with documented QC. Choose a general custom synthesis house when the work is a handful of straightforward peptides and speed or lowest unit price matters most.
Whatever the supplier, request a certificate of analysis, confirm the purification method, and ask how difficult sequences are handled before placing the order.
Frequently Asked Questions
What is JPT peptide synthesis used for?
JPT peptide synthesis supports immunology and protein research. Its PepMix overlapping pools are used for T-cell stimulation and immune monitoring, its peptide microarrays profile antibody binding, and its custom peptides serve binding and assay work. All of these products are research-use reagents rather than approved therapies.
How much does JPT custom peptide synthesis cost?
JPT quotes most custom work individually based on peptide length, target purity, scale, and modifications, so there is no universal list price. Short crude peptides are the least expensive, while long, labeled, or highly purified peptides cost considerably more. Peptide pools and microarray libraries are priced per project.
Is JPT peptide synthesis FDA-approved?
No. JPT's peptides are sold for research use only and are not FDA-approved drugs or diagnostics. Some peptide-based medicines are FDA-approved, but that approval applies to the finished drug product, not to a research-grade peptide.
This page provides educational research information and does not replace medical advice, diagnosis, or treatment.