We offer a wide range of peptides and recombinant proteins for use in your experiments. Our custom peptides and peptide libraries are available with flexible modification, conjugation, and isotopic labeling options.

For applications including proteomics, biomarker discovery, antibody production, and more, our peptide synthesis service can help you design and synthesize reliable and validated peptides. Our recombinant proteins can be used as standards and controls in cell assays and immunoassays. In addition, we offer function, high-quality, purified growth factors for use in cell culture.

Featured peptide & protein categories

Like our Custom Peptide Service, but with over 400 N-, C-terminal, and internal modification options available.

Choose among HeavyPeptide AQUA Custom Peptides and PEPotec SRM Custom Peptide Libraries to optimize for selected or multiple reaction monitoring (SRM/MRM) methods of absolute quantitation by mass spectrometry.

Designed specifically for the identification of immunogenic protein sites, these custom crude peptide libraries feature a low-toxicity formulation.

A broad range of proteins, including functional growth factors, recombinant and native proteins; select from our Invitrogen recombinant proteins or from the portfolio of Sino Biological.

Explore our collection of high-quality proteins for use as growth factors and cell-signaling molecules, such as cytokines and chemokines.

Choose from several varieties of scale, value and purity of custom DNA oligonucleotide synthesis and delivery.