Predefined Custom Proteins

In modern research, high-quality proteins are essential for precise and reproducible results. Our proteins provide flexible solutions tailored to your needs. We offer production through mammalian cell expression or cell-free expression, ensuring optimal adaptation to your experimental conditions.

If your protein of interest is not available in our catalog, our predefined custom proteins provide a risk-free alternative. Designed in silico by our experts and produced for the first time upon your order, these proteins are delivered through an efficient process that ensures timely results. To quickly check whether your target is available as a predefined custom protein, use the search bar below or browse with the filter facets. All predefined custom proteins are marked with grey "custom-made" tags in the product description.

Our portfolio includes two complementary expression systems. Mammalian expression enables native-like folding and post-translational modifications (PTMs), ideal for secreted and multi-pass transmembrane proteins. In parallel, our tobacco (Nicotiana tabacum)–based cell-free platform delivers eukaryotic PTMs (e.g., N-glycosylation, disulfide bonds) with rapid, high-yield, and scalable production—particularly suited for proteins difficult to express in mammalian cells.

Your Benefits with antibodies-online:

• Individually tailored expression – full-length proteins or specific domains, produced according to your sequence and application
• No financial risk – no costs if expression is unsuccessful
• Payment after delivery – no prepayment required*
• Optional add-ons – Nanodisc or VLP presentation, additional quality controls
• Long-term availability – convenient reordering possible

Learn more about our expression systems below and benefit from our expertise—from your first inquiry to the delivery of your predefined custom proteins.

*Prepayment conditions may apply depending on project scope and order volume.