Recombinant Proteins for Research

BioCrestSci is a recombinant protein supplier offering 16,000+ recombinant proteins for research. All catalog products in this collection are in stock and ready to ship, helping laboratories source commonly used targets without waiting for a new production run. The portfolio supports immunology, cell biology, oncology, infectious disease, neuroscience, diagnostics research, assay development and drug discovery.

Researchers can explore proteins from human, mouse, rat, non-human primate, microbial, viral and other species. Available expression systems include E. coli, mammalian cells, insect cells and yeast, with system and construct details provided on individual product pages. The catalog also includes untagged and tagged formats such as His-tagged, Fc-tagged, Avi-tagged and biotinylated proteins. These options support workflows including ELISA, western blotting, SPR/BLI, immunization, protein-interaction studies, cell-based assays, screening and structural research. Because requirements vary by target and experiment, review each product page for its specific sequence, tag, purity, formulation and supporting data.

Use the directory below to reach BioCrestSci’s dedicated protein-family and platform pages. Each specialist page provides deeper information and routes you to the relevant products, while this page remains the central entry point for the complete recombinant protein catalog.

16,000+Recombinant proteins
In stockReady-to-ship catalog
Multiple speciesHuman, mouse, rat and more
Multiple systemsBacterial, mammalian, insect and yeast

Explore Recombinant Protein Collections

Start with a dedicated topic page for deeper product-family guidance, platform information and relevant catalog links.

Immune Checkpoint Proteins

Find co-stimulatory and co-inhibitory targets for immuno-oncology, receptor-ligand binding and therapeutic discovery research.

CD Proteins

Explore cluster-of-differentiation proteins used in immune-cell characterization, binding assays and cell-therapy research.

Avi-tagged Proteins

Browse site-specific biotinylation-ready proteins designed for controlled orientation in binding and screening workflows.

Biotinylated Proteins

Explore biotinylated targets for capture assays, interaction studies, immunoassays and high-throughput screening.

Fc Receptors

Find Fc receptor proteins for antibody research, Fc interaction studies and therapeutic candidate evaluation.

Enzymes

Explore recombinant enzymes for activity assays, inhibitor screening and pathway research, including proteases and kinases.

Viral Antigens

Browse antigens from coronavirus, influenza, hepatitis, HPV, SIV, Ebola and other viral families for infectious-disease research.

Featured Protein Targets

Discover curated immune, antibody-therapeutic, cell-therapy and drug-discovery targets across the recombinant protein portfolio.

Browse 16,000+ Recombinant Proteins

Search or browse the in-stock catalog below. Product-specific expression system, tag and supporting information are shown on each listing.

Product Category

Showing 1–20 of 16425 resultsSorted by latest

In-Stock & Ready-to-Ship Recombinant Proteins

BioCrestSci’s recombinant protein catalog is maintained as an in-stock, ready-to-ship collection. This gives researchers a practical starting point when project timing matters, while avoiding promises about a fixed dispatch or delivery window. Availability, pack size and product-specific documentation should be confirmed on the individual product page or with the BioCrestSci team before ordering.

Expression Systems

Expression system choice can influence folding, post-translational modifications, yield and suitability for a particular assay. The catalog includes proteins expressed in E. coli, mammalian cells, insect cells and yeast. Bacterial expression is often suitable for proteins that do not require complex modifications, while mammalian systems can be preferable when native-like processing is important. Insect and yeast systems provide additional options for many constructs. Always use the system listed on the product page when comparing candidates.

Research Applications

Recombinant proteins can support ELISA and western blot controls, SPR/BLI and other interaction studies, antibody generation, immunization, cell-based assays, screening, structural biology and drug-discovery workflows. Suitability is product- and assay-specific: match the construct, species, tag, formulation and available supporting data to the intended use instead of assuming that every catalog protein has the same activity profile.

How to Choose a Recombinant Protein

  • Confirm the target and species. Check the sequence region, isoform and species homology required by the experiment.
  • Match the expression system. Consider folding, glycosylation and other post-translational requirements.
  • Review the construct and tag. Full-length, domain, Fc-tagged, His-tagged, Avi-tagged and biotinylated formats can behave differently in an assay.
  • Check product-specific specifications. Review purity, formulation, storage guidance and the supporting data shown for that product.
  • Choose for the workflow. Binding studies, immunoassays, cell-based experiments and structural work may require different formats.

Catalog Products vs Custom Production

Choose an in-stock catalog protein when an available species, construct and tag already fit the study. If the project requires a different sequence, expression system, tag, scale or purification strategy, BioCrestSci also offers protein expression services. The service route is designed for requirements that are not met by an existing catalog item; scope and timing depend on the individual project.

Why BioCrestSci?

BioCrestSci combines a broad 16,000+ recombinant protein catalog with dedicated topic pages that help researchers move from a protein family or platform to relevant products. The catalog covers multiple species, expression systems and tagged formats, while custom expression services provide a path for specialized requirements. This structure makes it easier to compare available products without replacing the detailed specifications and supporting information on each product page.

Recombinant Protein FAQ

How many recombinant proteins does BioCrestSci offer?

BioCrestSci offers more than 16,000 recombinant proteins across diverse targets, species, expression systems and formats.

Are BioCrestSci recombinant proteins in stock?

Catalog products in this collection are presented as in stock and ready to ship. Check the individual product page or contact BioCrestSci for current pack-size availability and order details.

Which expression systems are available?

The catalog includes proteins produced in E. coli, mammalian cells, insect cells and yeast. The expression system for a specific item is listed on its product page.

How do I choose between tagged and untagged proteins?

The best format depends on the experiment. Tags may simplify purification, immobilization or detection, while an untagged format may be preferred when a tag could affect the assay. Review the construct and intended workflow before selecting.

Does BioCrestSci provide custom recombinant protein production?

Yes. If a catalog product does not match the required construct, system, tag or scale, explore BioCrestSci’s protein expression services.

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