Astor Recombinant Proteins

What Are Recombinant Proteins?

Recombinant proteins are laboratory-produced proteins generated by inserting an engineered DNA sequence into a host such as bacteria, yeast, insect, or mammalian cells. This method enables strict control over sequence design and expression, ensuring proteins with desired structure and functionality.

Compared with naturally extracted proteins, recombinant forms are ideal for biotechnology, medicine, and diagnostics, supporting disease research, drug development, and vaccine production with improved reproducibility and scalability.

Why Choose Astor Scientific as Your Supplier?

We simplify the search for reliable recombinant protein suppliers by offering high-purity, research-grade products backed by expert technical support. Our proteins are engineered for stability, activity, and reproducibility, meeting the needs of modern laboratories and biopharma research.

Key Features

Wide Coverage

• Over 10,000 recombinant proteins covering diverse targets
• Multi-host expression (CHO, HEK293, E. coli, yeast, insect)
• Multi-species availability (Human, Mouse, Rat, Monkey, Rabbit, Pig, etc.)
• Multiple tags (His, Fc, GST, FLAG, Avi) and tag-free formats

Quality Guaranteed

• High purity: typically >95% by SDS-PAGE or HPLC
• Validated bioactivity: functional ELISA or activity assays
• Low endotoxin: <0.1 EU/µg protein by LAL test

Specifications may vary by catalog number; please refer to individual data sheets for details.

Types of Recombinant Proteins We Offer

• Cytokines, Chemokines, Growth Factors: for immune and cell signaling studies
• Immune Checkpoint Proteins: essential in cancer immunotherapy research
• Antibody & Cell Therapy Targets: for biologic and cellular therapy development
• Cluster of Differentiation (CD) Proteins: for immune profiling and biomarker analysis
• Avi-tagged & Biotinylated Proteins: for affinity and interaction assays
• Fc Receptors: for antibody-effector function studies
• Enzymes: for biochemical and diagnostic applications
• Viral Antigens: for vaccine and infectious disease research
• Custom Recombinant Proteins: designed for specialized applications

How Are Recombinant Proteins Made?

Recombinant protein production begins with gene design and vector construction, followed by expression in a suitable host system. After expression, purification steps—often including affinity and polishing chromatography—yield a stable, active protein suitable for analytical or therapeutic use.

Top Applications

• Drug Discovery & Development: assay screening, target validation, and mechanistic studies
• Vaccine Production: recombinant antigens for safe and effective immunization
• Protein Function Studies: structural and biochemical investigations
• Diagnostics: assay controls for infectious and metabolic diseases
• Biotechnology & Industrial Use: enzyme development and process optimization

Buy Recombinant Proteins from Astor Scientific

Astor Scientific is your trusted partner for research-grade recombinant proteins. Every batch undergoes strict QC testing for purity and biological activity, ensuring performance you can depend on.

• Documented purity and bioactivity data
• Fast global delivery and bulk availability
• Dedicated technical support for researchers
• Cost-effective solutions for large-scale projects

FAQs

What is a recombinant protein?

A recombinant protein is produced by inserting a modified DNA sequence into a host cell that expresses the protein for use in research, diagnostics, or therapeutics.

What are recombinant proteins used for?

• Drug development: biologic drug design and screening
• Vaccine production: antigens for recombinant vaccines
• Diagnostics: quality standards in immunoassays
• Biotechnology research: protein structure and interaction studies

What is a recombinant protein vaccine?

A recombinant protein vaccine uses lab-produced antigens to trigger an immune response without live pathogens—offering a safe and effective immunization strategy.

How are cleavage enzymes removed during purification?

Advanced purification workflows, including affinity chromatography and enzymatic digestion, are applied to remove residual cleavage enzymes and ensure protein purity.

Why express proteins in mammalian cells?

Mammalian expression systems provide correct protein folding and post-translational modifications, essential for functional and therapeutic studies.