Custom Recombinant Protein Production for Drug Discovery Research

Custom recombinant protein production gives drug discovery teams control over the sequence, expression host, affinity tag, purity, endotoxin level, formulation, quantity, and functional testing of their target protein. Beta LifeScience provides catalog, semi-custom and full-custom protein solutions for target validation, antibody discovery, binding assays, screening, structural studies and other research-stage drug discovery applications.

Researchers can begin with an available recombinant protein, modify an established product through semi-custom production or submit a new sequence for full expression and purification.

Request a Custom Protein Production Quote Submit your sequence and application requirements for technical evaluation, expression-system selection, purification planning and project-specific pricing.

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Custom Recombinant Protein Production Services from Beta LifeScience

Beta LifeScience connects an extensive recombinant protein catalog with semi-custom modification, full-custom expression and specialized production for difficult targets.

Its verified custom protein production capabilities include:

• Gene synthesis through protein expression and purification
• Four primary expression systems: E. coli, yeast, baculovirus–insect and mammalian cells
• Semi-custom and full-custom production routes
• VLP, nanodisc and detergent-based membrane protein formats
• Specialized cell-free membrane protein expression
• High-throughput and large-scale protein production
• Application-specific purification and QC options
• Bulk production and project-specific repeat-supply planning

Beta LifeScience offers a “No proteins, No payment” guarantee for eligible custom protein production projects. Eligibility and project-specific conditions should be confirmed in the formal quotation.

Match the Protein Solution to Your Drug Discovery Application

The right protein format depends on its role in the research workflow. A protein designed for antibody discovery may require different sequence boundaries, tags and QC from one produced for enzyme screening or structural studies.

Target Validation and Antibody Discovery

Target-validation projects may require full-length proteins, extracellular domains, catalytic domains, mutants, isoforms or membrane-associated targets. Construct design should retain the region required for the intended biological interaction.

Antibody programs may need different formats of the same target for immunization, screening and specificity testing. Available options can include:

• Human, mouse, rat or cynomolgus proteins
• Extracellular-domain constructs
• Fc-, His- or Avi-tagged proteins
• Biotinylated proteins
• Tag-free proteins
• Mutant or isoform-specific antigens
• Mammalian-expressed glycoproteins
• Membrane proteins in VLP or nanodisc formats

Researchers working on immuno-oncology targets can review Beta LifeScience’s Immune Checkpoint Proteins before requesting a new custom construct.

Binding and Kinetic Assays

SPR, BLI, ELISA, MST and ITC workflows can be sensitive to tag position, orientation, aggregation and formulation. Share the binding platform and immobilization strategy during project evaluation. For directional immobilization or controlled biotinylation, browse Avi-Tagged Proteins. Researchers requiring ready-to-use capture or binding reagents can also review Biotinylated Proteins.

Relevant custom options include:

• N-terminal or C-terminal tag placement
• Avi tag and enzymatic biotinylation
• Fc fusion
• Receptor–ligand pairs
• Monomeric or multimeric formats
• Custom buffer exchange
• Defined concentration
• Ligand- or receptor-binding testing

Enzyme and Compound Screening

Recombinant enzymes can support inhibitor screening, mechanism-of-action studies, and biochemical assay development. Commercial requirements may include a catalytically active construct, specific mutation, defined concentration and screening-scale quantity. Browse Recombinant Enzymes to determine whether an existing target is available before commissioning a custom project.

An enzyme-production request should define:

• Catalytic domain or full-length sequence
• Required mutation
• Cofactor requirements
• Tag position and removal preference
• Purity target
• Enzyme-activity assay
• Formulation
• Pilot and screening quantities

Purity and activity should be evaluated separately. When catalytic function is essential, include an appropriate activity assay in the project scope.

Cell-Based Assays

Cell-based studies can be sensitive to endotoxin, formulation, and biological activity. Beta LifeScience’s Ultra-Low Endotoxin Recombinant Proteins collection includes selected active cytokines, interleukins and growth factors for sensitive research applications.

For a custom cell-based reagent, specify:

• Maximum endotoxin level
• Required biological activity
• Carrier-protein preference
• Liquid or lyophilized formulation
• Final concentration
• Sterile handling requirements
• Intended cell type and assay

Scalable Screening and Repeat Supply

Early studies may need microgram quantities, while screening or validation programs can require milligram or larger quantities. The Production-Optimized Proteins collection provides a starting point for targets requiring scalability or semi-custom modification.

Discuss the following before production:

• Pilot quantity
• Scale-up quantity
• Batch-reservation requirements
• Project-specific repeat-supply planning
• Fill volume
• Storage format
• Activity criteria
• Lot documentation
• Future bulk demand

Beta LifeScience lists high-throughput and large-scale production among its custom expression capabilities. Exact quantities, availability, repeat-supply conditions and deliverables should be confirmed in the formal quotation.

Choose the Right Production Route and Expression System

Catalog Protein

Choose a catalog protein when the available sequence, species, expression host, tag, purity, endotoxin specification, and activity data already match the project. This route can support feasibility testing before investing in a modified or completely new construct.

Browse Catalog Recombinant Proteins

Semi-Custom Production

Semi-custom production is suitable when an established protein or mature production platform is available, but selected characteristics need adjustment.

Possible modifications include:

• Affinity tag or tag removal
• Endotoxin reduction
• Buffer exchange
• Concentration
• Fill volume
• Liquid or lyophilized format
• Selected variant or isoform
• Bulk quantity

Explore Semi-Custom Protein Production

Full-Custom Protein Expression

Full-custom production is appropriate for a new sequence, mutation, fusion protein, complex construct or target requiring expression optimization. The service can cover gene synthesis, construct development, host selection, expression, purification and agreed QC testing.

Request Full-Custom Protein Production

Expression-System Options

Expression-host selection should be based on the target’s biology, required post-translational modifications and intended assay. When the best host is uncertain, request a technical evaluation before scale-up.

Specialized Production for Membrane Drug Targets

Membrane proteins often require a membrane or membrane-mimicking environment to support stability and conformation. Beta LifeScience provides several membrane protein expression options:

• VLP-displayed membrane proteins
• Nanodisc-reconstituted proteins
• Detergent-solubilized proteins
• Specialized cell-free membrane protein expression
• Cellular expression in mammalian, insect, yeast or bacterial systems

The appropriate format depends on whether the protein will be used for antibody discovery, ligand binding, immunization, screening, or structural analysis.

A membrane-protein inquiry should include:

• Full-length or truncated sequence
• Number of transmembrane domains
• Preferred membrane format
• Tag requirements
• Intended binding or screening assay
• Required quantity
• Activity-testing preference

Discuss a Membrane Protein Project

Structural Biology and Protein Crystallization

Structural studies require careful construct design, solubility, homogeneity, concentration, and tag-removal planning. Beta LifeScience’s Protein Crystallization Service can support protein preparation, crystallization screening, and structure-related research workflows.

For structural projects, specify:

• Construct boundaries
• Target concentration
• Purity and homogeneity requirements
• Tag and tag-cleavage preference
• Buffer restrictions
• Apo protein or protein–ligand complex
• Ligand or compound availability
• Required structural-study deliverables

Connecting protein production with crystallization planning can help align the construct, purification, and formulation with the intended structural workflow.

Discuss a Protein Crystallization Project

Define the Construct, QC and Commercial Scope

A complete project quotation should align the protein design with measurable acceptance criteria.

Construct Requirements

Confirm:

• Target and species
• Accession number
• Expression range
• Mutations or variants
• Signal peptide
• Transmembrane domains
• Tag type and position
• Tag-cleavage requirements
• Monomeric or multimeric format

Quality-Control Requirements

Possible QC options include:

• SDS-PAGE purity
• Western blot
• HPLC or SEC analysis
• Protein concentration
• Molecular-weight confirmation
• Endotoxin testing
• Enzyme-activity assay
• Cell-based activity assay
• ELISA
• Ligand- or receptor-binding assay
• SPR or BLI

Not every protein requires every test. Select QC according to the intended drug discovery application and include the agreed testing in the formal quotation.

Quotation and Deliverables

Review whether the quotation defines:

• Final construct
• Expression system
• Production scale
• Purity target
• Endotoxin specification
• Formulation
• Included QC tests
• Functional-testing method
• Deliverables
• Project milestones
• Shipping conditions
• Payment terms
• Guarantee eligibility
• Scale-up and repeat-supply options

Compare quotations by reviewing the complete scope, including construct design, expression work, purification, QC testing, deliverables and scale-up options—not price alone.

How to Start a Custom Protein Project

1. Submit the target sequence and intended application. Include the species, accession number, preferred construct, required quantity, purity, endotoxin specification, and functional requirements.
2. Receive technical evaluation and host recommendations. The production team evaluates construct feasibility, expression-system options and purification requirements.
3. Confirm the construct, QC criteria, timeline and quotation. Review the final sequence, tag, expression host, deliverables and project-specific commercial terms.
4. Begin expression, purification and testing. Production follows the agreed project scope and milestones.
5. Receive the protein with agreed project documentation. Deliverables depend on the testing and documentation included in the formal quotation.

Request a Custom Protein Quote

Custom Protein Production Cost and Timeline

Custom recombinant protein production does not have one fixed price or schedule. Cost and timeline depend on:

• Gene synthesis requirements
• Construct complexity
• Expression host
• Protein solubility and yield
• Purification strategy
• Required quantity
• Purity target
• Endotoxin specification
• Functional testing
• Additional characterization

An existing production-optimized target may qualify for semi-custom work, while a novel membrane or multi-domain protein may require full-custom development. Submit complete specifications for project-specific pricing and estimated milestones.

FAQs:

What is custom recombinant protein production?

Custom recombinant protein production is a service in which a protein is designed, expressed, purified, and evaluated according to defined sequence, expression host, tag, quantity, purity, formulation, and application requirements.

Which expression system should I choose?

E. coli can suit many enzymes and soluble proteins, while yeast, insect and mammalian systems support different levels of eukaryotic folding and post-translational processing. The target’s biology and intended assay should guide the selection.

Can Beta LifeScience produce membrane proteins?

Yes. Beta LifeScience offers VLP, nanodisc, detergent-based, and specialized cell-free membrane protein production options. Feasibility depends on the target and requested format.

Can I request custom tags, mutations or buffers?

Yes. Custom projects can be evaluated for alternative tags, sequence ranges, mutations, variants, tag removal, buffer exchange, concentration and formulation requirements.

What affects protein production cost and timeline?

Cost and timing depend on construct design, expression system, expression yield, purification complexity, scale, and required QC testing. A technical evaluation is needed for an accurate quotation.

How do I request a quotation?

Submit the target sequence, intended application, expression-system preference, required quantity, purity, endotoxin limit, formulation and testing requirements through the project evaluation form.

Request a Custom Recombinant Protein Production Quote

Beta LifeScience supports catalog, semi-custom, and full-custom protein requirements for target validation, antibody discovery, binding assays, enzyme screening, cell-based research, membrane-target studies, and structural biology.

Send your target sequence, required quantity, purity, endotoxin limit, and intended application to receive a project-specific production plan and quotation.

Browse Recombinant Proteins

Explore Semi-Custom Production

Request a Custom Protein Quote