Target Antigens


We are an innovative biotechnology company dedicated to providing high-quality proteins & enzymes 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

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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

Transmembrane Protein VLPs

Transmembrane proteins are difficult to express in their natural 3D configuration. We use virus-like-particles (VLPs) derived from self-assembling viral capsid proteins to express transmembrane proteins in their natural conformation. VLPs are non-infectious and have high immunogenicity. Our line of VLP-displayed antigens can be used for antibody drug discovery of otherwise difficult targets.

What's new at KACTUS

Festival of Biologics 2023

Festival of Biologics 2023

MEET KACTUS AT THE FESTIVAL OF BIOLOGICS 2023. San Diego, CA     March 20-22     Booth #55 What is Festival of Biologics? Festival of Biologics u...

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