How do we ensure the Bioactivity for our proteins?

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A History of Quality

A 2018 analysis showed R&D Systems as the most cited provider of recombinant proteins in the scientific journals reviewed (129/344 citations, across 220 manuscripts)

Leader in recombinant protein development and manufacturing for over 30 years.

High Bioactivity
High purity
Lot-to-lot consistency

Tag your target with our conjugated reagents

Provide >42,000+ highly purified control peptides, proteins and a wide range of conjugated primary reagents, fluorescent dyes.

New Cytokine & Growth Factor Manufacturing Facility for Cell Therapy

Have Questions About GMP Proteins or Need Guidance?

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Animal-Free Recombinant Proteins for Stem Cell Culture

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Our high-quality animal-free proteins share the same biological activities and expression systems as the corresponding GMP proteins for easy transition between the two.

Fluorokines™ for COVID-19 Research

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Our new Fluorokines fluorescent-labeled Spike proteins feature Alexa Fluor Dyes. Easily detect ACE-2 expression on cells without the need for a secondary detection step.

How is the spike protein key to SARS-CoV-2 Infection?

Active recombinant SARS-CoV-2 Spike protein from RnD Systems

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