Recombinant Proteins

R&D Systems is the world’s premiere source of recombinant proteins. Extensive quality control produces industry leading bioactivity and lot-to-lot consistency that instills confidence in results and ensures reproducibility.

New Technique Probe for Glycans Using SDS-PAGE   Active Biotinylated Proteins
Modified Chemokines   New and Exclusive To R&D Systems

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Quality Control

Our proteins work the first time and perform reproducibly for every manufactured lot.
Find out why.

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Bulk Recombinant Proteins

We have the ability to scale up protein production to meet your needs. Economical pricing means you don’t have to sacrifice quality to meet your budget.

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Custom Protein Development

Utilize our expertise in cloning, expression, purification, conjugation, and formulation to create the protein of your choice.

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GMP-grade Recombinant Proteins

R&D Systems offers the largest selection of GMP proteins. Learn more about our GMP-grade proteins and manufacturing processes.

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Animal-Free Recombinant Proteins

We have dedicated facilities, equipment, and reagents to manufacture proteins with no exposure to animal byproducts.

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Bioassay Services

We have experience with over 900 established bioassays. Save setup and optimization time by partnering with our bioassay team.

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ProDots™ Recombinant Proteins

Avoid aliquotting with our single use vials of lyophilized ProDots that can be rolled directly into cell culture media.

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CellXVivo™ Immune Cell Differentiation Kits

Optimized cytokine formulations and protocols for the differentiation and expansion of dendritic cells, T cell subtypes, B cells, and regulatory T cells.

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Unique Model Organisms

From mammals and amphibians to bacteria and viruses. R&D Systems offers proteins that support research in a variety of important model organisms.

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Active Biotinylated Proteins

To ensure specificity, biotinylated proteins are tested in the same bioassay as the unconjugated form.