Buy Recombinant Human Proteins: How to Select the Right Product

The best recombinant human protein is one that matches your required target, sequence, biological activity, expression system, endotoxin level, and application. Beta LifeScience offers active cytokines, growth factors, immune checkpoint proteins, viral antigens, tagged proteins, transmembrane targets, and custom-produced constructs for laboratory research. Researchers can purchase selected proteins directly online, browse ready-to-ship recombinant proteins, or request a quotation for bulk quantities and customized formats. Before ordering, review the product’s pack size, price, availability, lead time, purity, activity, formulation, and quality documentation.

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Quick Product Selection Guide

Choose the product format according to the role it will perform in your experiment.

Buying Information to Check Before Ordering

Commercial and technical information varies between proteins. Review the live product page or contact Beta LifeScience to confirm the following details.

Pack Sizes and Online Pricing

Many Beta LifeScience products display an available pack size and price directly on the product page. Selected products can be added to the online cart, while made-to-order proteins use an inquiry-based purchasing model. For pilot studies, laboratories can begin with a smaller pack size. Larger experimental programs can request quantities in micrograms, milligrams, or grams according to project requirements.

Ready-to-Ship Availability and Lead Time

Researchers working with a defined timeline can browse the in-stock recombinant protein collection. Ready-to-ship availability should still be confirmed at the time of ordering. Lead times for custom or made-to-order proteins depend on the construct, expression host, purification target, quantity, and analytical requirements.

Browse Ready-to-Ship Proteins

Bulk Pricing and Lot Reservation

Beta LifeScience accepts bulk-order and custom-production requests. Researchers can submit the catalog number, required quantity, application, and preferred specifications through the online inquiry form. For long-term studies, ask whether a specific production lot can be reserved. Using a consistent lot can support experimental continuity across multiple stages of a project.

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CoA, SDS and Technical Support

Availability of a Certificate of Analysis and Safety Data Sheet should be confirmed for the selected product. The CoA can provide lot-specific quality information, while the SDS supports laboratory handling and safety documentation. Researchers who need help comparing proteins can submit their target, application, preferred expression host, required purity, and endotoxin threshold. Beta LifeScience states that its inquiry team can provide product and quotation details after reviewing the request.

Ask for Product Selection Support

Custom Constructs and Formulations

Custom options may include:

• Preferred amino acid sequence
• Full-length protein or selected domain
• Alternative expression host
• N- or C-terminal tag
• Tag-free final product
• Additional endotoxin removal
• Liquid or lyophilized format
• Custom buffer or formulation
• Bulk production quantity
• Application-specific analytical testing

Request Custom Protein Production

Shop Recombinant Human Proteins by Category

Beta LifeScience organizes recombinant proteins into application-focused collections.

Cytokines, Chemokines and Growth Factors

Cytokines, chemokines and growth factors support immune-cell studies, cell proliferation, differentiation, migration, tissue development, and signaling research. This collection includes interleukins, interferons, tumor necrosis factors, colony-stimulating factors, chemokines, and multiple growth-factor families. Active, low-endotoxin options are particularly suitable for functional cell-based experiments.

Ultra-Low Endotoxin Proteins

Ultra-low endotoxin recombinant proteins are designed for sensitive functional research. They can support primary-cell culture, immune-cell assays, inflammation research, organoids, and other experiments where endotoxin control is important. Product-level endotoxin specifications should always be reviewed because the stated limit can vary between individual proteins.

Explore Ultra-Low Endotoxin Proteins

Immune Checkpoint Proteins

Immune checkpoint proteins are available for cancer immunology, receptor–ligand analysis, inhibitor screening, and therapeutic antibody research. Researchers can compare co-inhibitory receptors, co-stimulatory receptors, immune-regulatory ligands, and related targets. The protein sequence, molecular format, tag, and biological validation should match the planned assay.

Antibody and Cell-Therapy Targets

Antibody and cell-therapy target proteins support therapeutic antibody, antibody–drug conjugate, CAR-T, and CAR-NK research. These proteins can be used for antibody screening, target validation, specificity testing, receptor binding, and cell-therapy development.

Avi-Tagged and Biotinylated Proteins

Avi-tagged proteins provide a defined biotinylation site for controlled immobilization on streptavidin surfaces.

Biotinylated proteins offer convenient formats for ELISA, SPR, BLI, flow cytometry, antibody screening, and high-throughput binding assays.

Fc Receptors

Fc receptor proteins support Fc-engineering studies, antibody effector-function research, immune signaling, and therapeutic antibody development. When comparing Fc receptors, confirm the receptor subtype, species, sequence, expression host, tag position, and glycosylation requirements.

Viral Antigens

Viral antigens are available for infectious-disease research, serological assay development, antibody production, diagnostic studies, and vaccine-related research. The collection covers antigens associated with influenza, dengue, coronaviruses, HIV, HPV, Zika virus, Ebola, hepatitis viruses, and additional pathogens.

Transmembrane Proteins

Transmembrane proteins support studies involving receptors, transporters, ion channels, and membrane-associated therapeutic targets. VLP and nanodisc formats can provide a lipid-associated environment for targets that benefit from native-like conformation and topology.

Featured Recombinant Human Proteins

The following products demonstrate the range of active, high-purity, and low-endotoxin proteins available from Beta LifeScience.

Select the Right Protein Format

Active Protein or Recombinant Antigen

Choose an active protein for cell signaling, proliferation, differentiation, receptor binding, enzyme studies, and other function-dependent experiments. Look for a relevant activity assay and a potency value such as ED50, EC50, or specific activity. A recombinant antigen is suitable for antibody production, positive controls, immunoassay standards, and binding studies when native biological activity is not required. Confirm that the sequence contains the required epitope or functional domain.

Construct, Expression System and Tag

Confirm the species, isoform, amino acid range, full-length or fragment format, mutation, molecular structure, and tag position. E. coli is suitable for many non-glycosylated proteins and antigens. Mammalian systems such as HEK293 and CHO are valuable for proteins requiring complex folding, disulfide bonds, glycosylation, or native-like binding.

His tags support purification and detection, Fc tags can support dimerization and antibody-related assays, and Avi tags enable controlled biotinylation. Tag-free proteins are useful when a fusion partner could influence activity. For a more detailed technical explanation, read Important Considerations for Selecting Recombinant Proteins.

Verify Quality Before Purchase

Review four product-level specifications before placing an order:

1. Purity: Check the stated SDS-PAGE or chromatographic purity.
2. Bioactivity: Confirm the assay method and potency when function is required.
3. Endotoxin: Select a suitable limit for the sensitivity of the biological system.
4. Formulation: Review the buffer, carrier protein, stabilizers, detergents, preservatives, and physical form.

The product page should also provide sequence, molecular weight, storage, and reconstitution information. Request the applicable CoA or SDS when additional documentation is required for laboratory procurement.

Custom Recombinant Human Protein Production

A custom project is appropriate when the required sequence, host, tag, purity, endotoxin level, formulation, or quantity is unavailable as a catalog product. Beta LifeScience’s protein expression service supports bacterial, yeast, insect, mammalian, and other expression requirements. Membrane-associated targets can be discussed through the transmembrane protein expression service.

Include the following information with your inquiry:

• Target name and sequence
• Required expression host
• Preferred tag and tag position
• Desired quantity
• Purity requirement
• Endotoxin threshold
• Liquid or lyophilized format
• Intended research application
• Required analytical testing
• Preferred project timeline

Request Custom Protein Production

Order Recombinant Human Proteins from Beta LifeScience

Beta LifeScience provides catalog proteins, in-stock products, ultra-low endotoxin options, tagged formats, transmembrane targets, bulk quantities, and custom protein-production support. Before ordering, confirm the product construct, expression system, purity, biological activity, endotoxin specification, formulation, pack size, price, availability, and documentation.

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Browse Ready-to-Ship Proteins

Request Bulk Pricing or Technical Support

FAQs

Where can I buy recombinant human proteins?

Researchers can purchase recombinant human proteins through the Beta LifeScience online catalog. Available categories include cytokines, growth factors, immune checkpoints, tagged proteins, viral antigens, transmembrane targets, and ultra-low endotoxin products.

How can I confirm that a protein is ready to ship?

Check the in-stock recombinant protein collection and the current product page. Contact Beta LifeScience when availability or delivery timing is critical to the project.

Can I request Bulk pricing?

Yes. Beta LifeScience accepts bulk-order inquiries. Provide the catalog number, quantity, application, and required specifications to request current pricing and lead-time information.

Are CoA and SDS documents available?

Documentation availability should be confirmed for the selected product. Beta LifeScience can provide MSDS information by email, while lot-specific quality documentation can be requested during procurement.

Can I order a custom recombinant human protein?

Yes. Custom production can support preferred constructs, sequence ranges, expression hosts, tags, endotoxin requirements, formulations, analytical packages, and bulk quantities.