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Proteins

 

Advance functional biology, assay development and protein characterization with Biorbyt's broad portfolio of recombinant, active and native proteins, cytokines, enzymes, biotinylated proteins, peptides, immunogens, protein ladders and cell lysates.

Select from multiple expression systems, species and formats to support cell culture, binding studies, immunoassays, biochemical analysis and protein validation workflows.

Browse all proteins

Protein structures and molecular interactions
Human TGF-beta 1 recombinant protein SDS-PAGE purity analysis

Recombinant Proteins

Consistently produced proteins available across multiple expression systems, species, tags and formats for reliable assay development and protein research.

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Human TGF-beta 1 protein cell-based bioactivity assay

Active Proteins

Functionally validated proteins designed for cell-based assays, receptor studies, pathway analysis and other workflows where measurable biological activity is essential.

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Human TGF-beta 1 protein receptor-binding ELISA assay

Cytokines & Growth Factors

Bioactive signaling proteins for immune-cell studies, stem-cell culture, organoid workflows, proliferation, differentiation and cellular response analysis.

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Enzyme activity assay

Enzymes

Purified enzymes and enzyme-related proteins for catalytic assays, substrate conversion, assay optimization, screening and biochemical pathway studies.

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Human full-length membrane proteins in synthetic nanodiscs

Human Full-Length Membrane Proteins 

Explore highly purified, soluble human full-length membrane proteins designed to retain native conformation and functional activity.

Biorbyt’s Synthetic Nanodisc platform provides detergent-free, MSP-free membrane proteins for binding studies, immunization and functional assays.

Explore Synthetic Nanodisc Platform 

Explore proteins for functional assays, cell culture, immunoassays, enzyme studies and protein characterization.

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Reliable proteins for reproducible biological research

Protein performance depends on more than concentration alone. Purity, folding, post-translational modification, expression system, endotoxin level and biological activity can all influence experimental outcomes.

Biorbyt's protein portfolio is designed to support researchers across discovery, assay development and validation workflows by providing clearly defined formats and application-relevant product information.

  • Recombinant and native protein formats for different experimental requirements
  • Bioactive proteins for functional and cell-based assays
  • Multiple expression systems, species and tag options
  • Cytokines and growth factors for cell culture and signaling studies
  • Biotinylated proteins, peptides and immunogens for detection, interaction and antibody-development workflows
  • Enzymes, standards, ladders and lysates for analytical workflows

Native Proteins

Proteins isolated from biological sources to preserve naturally occurring structure, processing and post-translational modifications where these features are important.

Biotinylated Proteins

Biotin-labelled proteins for sensitive detection, immobilization and interaction studies in ELISA, flow cytometry, SPR, BLI and streptavidin-based assays.

Peptides

Synthetic peptides for antibody blocking, epitope mapping, assay standards, protein-interaction studies and other targeted research applications.

Immunogens & Antigens

Protein and peptide antigens developed for antibody production, immunoassay development, immune-response studies and target-specific validation workflows.

Cell Lysates

Prepared cell and tissue lysates containing native protein mixtures for western blot controls, assay validation, expression studies and comparative proteomics.

Protein Ladders

Molecular-weight standards for SDS-PAGE and western blot workflows, supporting clear band-size estimation and consistent gel-to-gel comparison.

How to choose the right protein format

Match the product format to the biological question, assay design and required quality attributes before ordering.

Research Need

Recommended Category

Key Selection Points

Binding, structural or assay-development work

Recombinant Proteins

Check expression system, sequence range, tag position, purity and molecular weight.

Functional or cell-based assay                
Activity critical

Active Proteins

Confirm biological activity data, carrier proteins, endotoxin level and formulation.

Cell growth, differentiation or immune signaling

Cytokines & Growth Factors

Review species activity, unit definition, carrier content, sterility and reconstitution conditions.

Catalytic or biochemical assay

Enzymes

Check specific activity, cofactors, buffer compatibility, substrate and storage stability.

Preservation of native modifications

Native Proteins

Confirm biological source, purification method, native state and lot-specific specifications.

Immobilization or sensitive interaction assay

Biotinylated Proteins

Review biotinylation method, labelling ratio, activity retention and streptavidin compatibility.

Epitope mapping, blocking or assay standards

Peptides

Check sequence, purity, modifications, conjugation status and solubility requirements.

Antibody generation or antigen-specific validation

Immunogens & Antigens

Confirm antigen type, species, sequence coverage, carrier conjugation and intended immunization use.

Western blot control or expression profiling

Cell Lysates

Select relevant species, tissue or cell type, treatment status and total protein concentration.

Molecular-weight estimation

Protein Ladders

Choose the required molecular-weight range, pre-stained format and gel or blot compatibility.

Applications supported by our protein portfolio

Biorbyt proteins support a wide range of workflows, including functional studies, cell culture, ELISA, SDS-PAGE, western blot, protein interaction studies, enzyme assays, binding assays, mass spectrometry and assay development.

Need help selecting a protein?

Our scientific support team can help review expression systems, tags, activity requirements, formulations and downstream applications.

Contact Technical Support