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Proteins

Recombinant Proteins: Cytokines, Growth Factors & More | Assay Genie
Assay Genie · Recombinant Proteins

Recombinant proteins for assays, drug discovery & more

A diverse range of bioactive recombinant proteins — cytokines, growth factors, CD markers and viral proteins — across multiple species and research areas, validated for reliability and bioactivity.

View All Proteins Browse by Category
7–10 day delivery Bioactivity validated Multi-species Thousands of citations
Bioactivity & Purification Data
Bioactivity (ED50) dose-response curve and SDS-PAGE purity gel for Recombinant Human Mature TGF-beta 1 from Assay Genie
Validation data: Bioactivity (ED50) and SDS-PAGE purity for Recombinant Human Mature TGF-beta 1 — representative of the QC on every protein.
15
Research Areas
25+
Species
≥95%
Purity
7–10 Day
Lead Time

Browse Proteins by Category

Jump straight to the range you need — every card links directly to its protein category.

All Proteins

Our complete catalogue of bioactive recombinant proteins for functional and structural studies.

Signalling Molecules

Interleukins, cytokines and chemokines that drive cell communication.

CD Markers & Antigens

CD proteins for immune cell identification and signalling research.

Viral Proteins

SARS-CoV-2, HIV and other viral proteins for virology research.

Species-Specific Proteins

Human, mouse, rat and 20+ other species, matched to your model system.

Custom Protein Services

Need something specific? Tailored protein expression and development.

Browse by Research Area

Find proteins matched to your field — 15 curated research areas.

Autophagy Cardiovascular CD Markers & Antigens Cell Biology Cell Cycle Cell Death Developmental Biology Epigenetics & Nuclear Signaling Immunology Metabolism & Enzymes Microbiology Neuroscience Plant & Natural Proteins Signalling Molecules Viral Biology

Browse by Species

Recombinant proteins for human, mouse, rat and 20+ additional species.

Human Proteins

Our largest range — cytokines, growth factors, CD markers and more.

Mouse Proteins

Species-matched proteins for in vivo and cell-based mouse models.

Rat Proteins

Recombinant rat proteins for physiology and disease research.

All Species

Browse every species we express, from bovine and canine to fish.

More Species
Archaea Bacteria Bat Bird Bovine Canine Dolphin Feline Ferret Fish Fungus Goat Guinea Pig Horse Insect Marine Organisms Non-Human Primate Parasite Plant Porcine Rabbit Reptile Sheep Virus

Featured Proteins

A selection of popular bioactive and biotinylated recombinant proteins.

Popular
Biotinylated Recombinant Human VEGF-A / VEGF165 protein RPCB0027 product image from Assay Genie
RPCB0027

Human VEGF-A / VEGF165 Protein

BiotinylatedGrowth factor
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Biotinylated Recombinant Human IL-2 R alpha / CD25 protein RPCB0529 product image from Assay Genie
RPCB0529

Human IL-2 R alpha / CD25 Protein

BiotinylatedCD marker
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Biotinylated Recombinant Human IL-6RA / CD126 protein RPCB0040 product image from Assay Genie
RPCB0040

Human IL-6RA / CD126 Protein

BiotinylatedCytokine receptor
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Biotinylated Recombinant Human TNF-alpha protein RPCB0042 product image from Assay Genie
RPCB0042

Human TNF-alpha Protein

BiotinylatedCytokine
View Product
Biotinylated Recombinant Human PDGFR-alpha / CD140a protein RPCB0069 product image from Assay Genie
RPCB0069

Human PDGFR-alpha / CD140a Protein

BiotinylatedGrowth factor receptor
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Recombinant Human Catenin beta-1 / CTNNB1 protein RPCB0907 product image from Assay Genie
RPCB0907

Human Catenin beta-1 / CTNNB1 Protein

BioactiveSignalling
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Recombinant Rat FGF-2 / bFGF protein RPCB1168 product image from Assay Genie
RPCB1168

Rat FGF-2 / bFGF Protein

BioactiveGrowth factor
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Recombinant Mouse CSF-1 / M-CSF protein RPCB0002 product image from Assay Genie
RPCB0002

Mouse CSF-1 / M-CSF Protein

BioactiveCytokine
View Product

Reliable Proteins, Expert Support

Bioactive recombinant proteins backed by a scientific team that supports your research at every step.

Fast Delivery

7–10 business day lead time on our recombinant protein range.

Highly Cited

Thousands of citations across leading peer-reviewed journals.

PhD-Level Support

Our team is trained to PhD level to help you choose and apply the right protein.

Frequently Asked Questions

How do I place an order?
Orders can be placed online on our website, via pro-forma invoice, or by email to orders@assaygenie.com. For purchase orders, find us as ‘Assay Genie’ or ‘Reagent Genie Ireland Ltd’ on your ordering system, or order via your local distributor.
Can’t find Assay Genie on your vendor system?
We are listed as ‘Assay Genie’ or ‘Reagent Genie Ireland Ltd’. Check whether we’re on your system here — if not, we’re happy to complete a new supplier form, or you can order through your local distributor.
Which countries are covered by distributors?
To find out whether you can order directly or via a distributor, and to find your local partner, see our distributors page.
How can I make an enquiry?
Use our Contact Us page, email info@assaygenie.com or orders@assaygenie.com, call +353 15639720, or contact your local distributor.
How do I view prices in my currency?
Use ‘Select currency’ at the top of any page — options include Euro (€), Pound (£) and US Dollar ($).
Do you offer custom protein development?
Yes. If you don’t see the protein you need, our team offers tailored protein expression and development — get in touch with your target and requirements.
How will I know my order has been received?
Once we receive your order, we send a confirmation email including your order number and estimated delivery date.

Can’t Find Your Protein?

Tell our PhD-level team which target or species you need and we’ll help you find it — or develop it for you.

Contact Our Team Browse Categories
ELISA Kits Antibodies Multiplex ELISA Citations Hub
15 research areas 25+ species covered ≥95% purity PhD-level technical support