UA BIOSCIENCE：Providing High-Purity Recombinant Protein Solutions Based on Multiple Protein Expression Platforms

Abstract:

 In the fields of fundamental life science research and biopharmaceutical development, the quality of recombinant protein reagents is a critical factor determining the reliability of experimental data and R&D efficiency. Nanjing UA Protein Biotechnology Co., Ltd., a brand specializing in recombinant protein technology, has established a comprehensive protein expression platform. It provides the global research and industrial communities with high-purity protein tools possessing correct structure and complete function, covering a broad spectrum of needs from drug target development to cellular function studies.

1.Technical Core: Multiple Expression Platforms at Nanjing UA Protein

To ensure recombinant proteins, particularly complex transmembrane proteins and cytokines, can achieve their native conformation and full biological activity, Nanjing UA Protein has established multiple protein expression platforms encompassing various systems including E.coli, mammalian cells (HEK293 and CHO), Pichia pastoris, and insect cells.

• Ensuring Post-Translational Modification Fidelity: This platform mediates correct N-linked/O-linked glycosylation, phosphorylation, and disulfide bond formation, which are crucial for protein stability, solubility, and mediating specific biomolecular interactions (e.g., antibody Fc region binding to Fc receptors).

• Addressing Challenges in Membrane Protein Preparation: Targeting the challenges in the expression and purification of membrane protein drug targets (e.g., GPCRs, ion channels), Nanjing UA Protein's technical team has established systematic detergent screening and stability optimization protocols, enabling the production of functional membrane proteins with native conformation and ligand-binding activity.

• Multi-dimensional Quality Control System: Each batch of product undergoes purity and molecular weight identification via SDS-PAGE, SEC-HPLC, and mass spectrometry analysis. Endotoxin levels are strictly controlled at <1.0 EU/μg. Critical products (e.g., cytokines, receptors) are validated for bioactivity using Surface Plasmon Resonance (SPR) or cell-based reporter gene assays, ensuring they are functional molecules, not merely immunoreactive.

2. Core Product Portfolio at Nanjing UA Protein: Serving Cutting-Edge Scientific Research

2.1 Drug Target Proteins & Fc Receptors

• Membrane Protein Drug Targets: Nanjing UA Protein offers a variety of detergent-stabilized full-length membrane proteins, such as GPCRs, ion channels, and transporters. These proteins can be used for small molecule compound screening, antibody discovery, and binding kinetics analysis (SPR/BLI).

• Fc Receptor Proteins: Nanjing UA Protein provides a range of high-purity recombinant human Fc receptors (e.g., FcγRI/CD64, FcγRIIA/CD32a, FcγRIIIA/CD16a, FcRn). These are used in antibody drug development to assess effector functions (e.g., ADCC/ADCP) and pharmacokinetic properties. The products feature glycosylation patterns consistent with native proteins, ensuring the authenticity of binding affinity data.

2.2 Cytokines & Related Proteins

Nanjing UA Protein offers a comprehensive line of cytokine products, including interferons, interleukins, growth factors, colony-stimulating factors, tumor necrosis factors, and chemokines.

• Research Grade & GMP Grade Cytokines: To meet the stringent requirements of preclinical research like cell therapy, Nanjing UA Protein provides GMP-grade cytokines produced under stricter quality control standards in animal-component-free systems, effectively mitigating the risk of adventitious agents.

• Cytokine Kits: Pre-mixed, concentration-optimized cytokine kits are provided, such as T cell/stem cell culture kits, facilitating standardized cell culture experiments.

2.3 Precision Enzymes & Assay Kits

• Enzymes: Nanjing UA Protein offers highly specific recombinant enzymes, including TEV protease for fusion tag cleavage, specific proteases for antibody and glycosylation cleavage (e.g., IdeS, PNGase F), transglutaminase for drug conjugation, and core enzyme raw materials for diagnostic reagents.

• Assay Kits: Based on self-produced high-quality proteins, assay kits such as kinase assay kits and luciferase assay kits have been developed, ensuring data accuracy and reproducibility.

3. Quality Commitment at Nanjing UA Protein: Excellent Lot-to-Lot Consistency & Technical Support

Nanjing UA Protein understands the stringent demands of scientific research for reproducibility. We commit that each product batch is accompanied by a detailed Certificate of Analysis (CoA) and offers excellent lot-to-lot consistency, providing stable and reliable support for your long-term research projects.

4.Conclusion

Leveraging its profound technical expertise in the recombinant protein field, Nanjing UA Protein has established a comprehensive product system, providing all-round support for life science research and biopharmaceutical development. The core product portfolio includes:

• Drug Target Proteins: Covering membrane protein drug targets, small molecule drug target proteins, etc.

• Fc Receptor Proteins: Providing a series of high-purity recombinant human Fc receptors.

• Cytokine Series: Including a full line of interferons, interleukins, growth factors, and more.

• Enzymes: Providing fusion tag cleavage enzymes, antibody and glycosylation cleavage enzymes, etc.

• Assay Kits: High-sensitivity products like kinase assay kits.

As a professional recombinant protein supplier, Nanjing UA Protein consistently adheres to strict quality control systems to ensure product bioactivity and lot-to-lot consistency. We are committed to providing reliable technical support for researchers in drug discovery, disease mechanism studies, precision medicine, and related fields through our high-quality recombinant protein products.

For detailed product information and technical documentation from Nanjing UA Protein, please visit the official website or contact our technical support team for professional service.