mRNA Enzymes




Antibody Drug Discovery


We are an innovative biotechnology company dedicated to providing high-quality products that meet novel customer demands.

Facilities & equipment

→ R&D production headquarters of over 50,000 square feet
→ GMP-production facility of over 100,000 square feet
→ Scientific team of 200 researchers and production engineers

SAMS™ Technology Platform

→ Structure Aided Design and Multiplex Screening (SAMS) 
→ Optimizes protein configuration and expression conditions 
→ Bioactive proteins in multiple cell lines.

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Quality Systems

→ High-purity and bioactive proteins
→ Extensive quality control testing, including activity testing
→ Optional GMP-grade material for commercial manufacturing

Custom Production

→ Scientific support for structure optimization specific to your application
→ Bulk material supply for research and process development
→ GMP-Grade material for clinical manufacturing
→ Equipment certification, batch records, etc. for regulatory filing

VLP Super Antigens

Many proteins have low abundance or weak immunogenicity. Virus-like-particles (VLPs) derived from self-assembling viral capsid proteins are non-infectious and can elicit an immune response. Our line of VLP-displayed antigens can be used for antibody drug discovery of otherwise difficult targets.

What's new at KACTUS

AET San Diego 2022

AET San Diego 2022

KACTUS will be at the Antibody Engineering & Therapeutics conference in San Diego December 4-8th. Chat with us in person at booth #103 to le...

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CD163 Protein

CD163 Protein

KACTUS offers human, mouse, and biotinylated CD163 protein.  The hemoglobin (Hb) scavenger receptor CD163, is a macrophage-specific protein invo...

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TIDES Europe 2022

TIDES Europe 2022

KACTUS will be at TIDES Vienna on November 16-18th: Chat with us to see how we can help you bring your technology forward! Find us at booth #39....

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