High-purity custom peptides in 5–10 business days. Standard, modified, cyclic, and stapled peptides with >95% purity. Plus recombinant protein expression and antibody development services.
State-of-the-art solid-phase peptide synthesis with purity levels up to 98%. Support for natural and unnatural amino acids, modifications, and cyclization.
Get Peptide QuoteHEK293 and CHO mammalian suspension systems, E. coli bacterial expression. Full construct design, codon optimization, and Protein A/G purification.
Protein Expression QuoteComprehensive antibody services including polyclonal, monoclonal (hybridoma), recombinant, and single-domain (VHH/nanobody) antibody development.
Develop AntibodyCatalog and custom peptides for research. Khavinson bioregulatory, nootropic, anti-aging, melanocortin, stapled, and cyclic peptides.
View PeptidesZ-Active® tagless cytokines and growth factors with 5-10× higher bioactivity. HEK293 mammalian expression.
View ProteinsPolyclonal, monoclonal, and recombinant antibodies for research and diagnostic applications.
View Antibodies
Tagless Protein Technology
HEK293 Mammalian Expression × Chaperone-Assisted Technology
Our proprietary Z-Active® platform combines HEK293 mammalian suspension expression with chaperone-assisted protein folding technology to produce tag-free cytokines and growth factors with native post-translational modifications — and 5–10× higher bioactivity than leading competitors.
FDA 2.0 ready — Z-Active® growth factors for 13+ organoid types.
EC₅₀ cell proliferation assay — relative bioactivity (higher is better)
Why the difference?
Z-Active® uses HEK293 + chaperone co-expression for proper folding, disulfide bonds, and glycosylation — resulting in native-like proteins with significantly lower EC₅₀.
* Average across cytokine panel (TNF-α, IL-2, IL-6, IFN-γ, EGF, VEGF). Individual fold-change varies by target.
Explore our curated peptide collections by research focus
Z-Active® HEK293 Expression: Why Mammalian Expression Matters for Recombinant Proteins Introduction: The Foundation of Biological Research In the rapidly evolving landscape of modern molecular biology,…
Read MoreNootropic Peptide Handling Guide: Storage, Reconstitution & Stability ⚠️ DISCLAIMER: This Application Note and Practical Lab Guide is strictly intended for qualified laboratory personnel and…
Read MoreStapled BH3 Peptide Synthesis: Design, Synthesis & Validation 1. Abstract / Summary The regulation of apoptosis is a fundamental cellular process primarily governed by the…
Read MoreISO 9001 and ISO 17025 certified quality management systems ensuring consistent, reliable results.
PhD-level scientists with decades of combined experience in peptide chemistry, protein biochemistry, and immunology.
Fully customizable synthesis and expression services tailored to the unique needs of your research project.
Temperature-controlled shipping with 48-hour delivery options. Real-time tracking for every order.
