Why Native Immunogens Outperform Recombinant Alternatives
Antibodies recognize 3D shapes, not 2D sequences. When you immunize with a recombinant protein that lacks native folding, glycosylation, or post-translational modifications, you get antibodies optimized for a target that doesn't exist in real samples.
The result? Antibodies that fail in Western blots, miss targets in immunohistochemistry, or show unexpected cross-reactivity in diagnostic applications.
Athens immunogen-grade proteins eliminate this problem at the source:
- Native conformation – antibodies raised against native immunogens recognize the same epitopes present in clinical samples, tissue lysates, and diagnostic targets
- High purity (≥98%) – contaminant proteins trigger unacceptable responses that dilute your yield of target-specific antibodies and complicate downstream screening
- Mass spec identity confirmation – confirms you're immunizing against what you think you are, not a co-purified contaminant or degradation product
- Lot-to-lot consistency – same immunogen, same response, same antibody characteristics across production campaigns
Antibody manufacturers worldwide trust Athens proteins. We work directly with production teams to match specifications to protocols.
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See how Athens immunogens support antibody manufacturing programs worldwide.
*1. Boottanun, et al. An improved evanescent fluorescence scanner suitable for high-resolution glycome mapping of formalin-fixed paraffin-embedded tissue sections. Anal Bioanal Chem 415, 2023, 6975–6984. https://doi.org/10.1007/s00216-023-04824-2
*2. Correia, et al. Sedimentation velocity FDS studies of antibodies in pooled human serum. Eur Biophys J 52, 2023, 321–332. https://doi.org/10.1007/s00249-023-01652-1
*3. Mayner, et al. Heterogeneous expression of alternatively spliced lncRNA mediates vascular smooth cell plasticity. Proc Natl Acad Sci U S A 120, 2023, e2217122120. https://doi.org/10.1073/pnas.2217122120
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Native proteins for IVD calibrators and controls—purified for consistency, documented for regulatory submission.
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Low-endotoxin proteins for serum-free and chemically defined media formulations. Validated by leading cell culture manufacturers.
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Immunoglobulins, fragments, and subclasses with native structure—for diagnostics, research, and further manufacturing.
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Transferrins, apolipoproteins, and carrier proteins—scalable from research quantities to bulk manufacturing.
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Active enzymes and inhibitors with documented activity—for functional assays, drug development, and IVD.
Need something unique?
Your protocol, your specs. Define purity, format, buffer, and scale—we'll deliver immunogens configured for your production workflow.
