Human IgG Conjugated to Agarose Beads, 2 mL (High-Capacity) – Catalog #B2025628

Human IgG Conjugated to Agarose Beads, High-Capacity (Catalog #B2025628) consist of human immunoglobulin G (IgG) antibodies at enhanced density immobilized on agarose beads, supplied as 2 mL of suspension. The agarose matrix provides a stable, inert support with large pore size and high protein binding capacity. The enhanced ligand density of this version enables capture of larger amounts of target antigens, epitopes, and proteins that bind human antibodies, making it suitable for large-scale purification and production-scale applications.

Scientific Overview

Agarose-based affinity chromatography materials have become standard tools for rapid, high-yield purification of proteins and other biomolecules. The agarose polysaccharide matrix is chemically inert, supports large pore sizes, and tolerates a wide range of pH and ionic strength conditions. When human immunoglobulin G (IgG) is covalently immobilized onto agarose beads at high density, the resulting material provides increased binding capacity for antigens, epitopes, and proteins that bind human IgG, enabling straightforward affinity separation at production scales. The high-capacity version is optimized for applications requiring capture of larger amounts of target protein or extended use before saturation. The beads can be used in column formats, batch binding, or with automated liquid handlers for rapid sample preparation in proteomics, bioprocess development, and large-scale purification applications.

Key applications include:

• Large-scale affinity purification of antigens and epitopes from high-volume samples
• Production-scale enrichment of human IgG-binding proteins
• Bioprocess-scale development and manufacturing applications
• Extended use protocols requiring high binding capacity and minimal resin replacement
• Depletion of large amounts of human IgG-binding contaminants from samples

Usage & Handling Guidance

Store the suspension at 2–8°C. Mix gently before use. The beads can be used in column, batch, or automated formats depending on your application.

• Binding: Add beads to your sample and incubate at appropriate pH and temperature to allow human IgG to capture target antigens or proteins; optimize binding conditions for your specific application and scale.
• Separation: Centrifuge to collect beads, then remove supernatant. Alternatively, use in column flow-through mode for larger-scale applications.
• Washing: Resuspend and wash beads with appropriate buffer to remove unbound material and improve purity of bound complexes.
• Elution: Elute bound proteins by lowering pH, increasing salt concentration, or using competitive displacement, depending on binding strength and your downstream requirements. Request the COA/TDS for lot-specific elution protocols and capacity data.

What You Get

• 2 mL of high-capacity human IgG-conjugated agarose bead suspension
• Enhanced ligand density for larger-scale applications
• Ready-to-use affinity chromatography resin optimized for production-scale work
• For research use only (RUO)

Why Researchers Choose It

• High-capacity ligand density allows capture of larger amounts of target protein
• Agarose matrix is inert, chemically stable, and compatible with standard chromatography equipment and automation
• Simple protocol scales from bench to production: mix, bind, wash, and elute
• Ideal for bioprocess development and manufacturing-scale applications

Frequently Asked Questions (FAQ)

• What proteins can I purify with these beads?
  These beads capture antigens, epitopes, and proteins that bind human immunoglobulin G. The high-capacity version is optimized for large-volume samples and extended binding protocols. Optimize your binding conditions for your specific target.
• What is the difference between the standard and high-capacity versions?
  The high-capacity version (B2025628) has enhanced IgG ligand density compared to the standard version (B2025620), providing higher binding capacity per unit volume. Choose the high-capacity version for large-scale purifications or bioprocess applications.
• How do I elute bound material?
  Elution depends on the strength of the IgG-antigen interaction. Try pH changes (0.1 M glycine–HCl, pH 2.5–3.0), increased salt, or mild detergents. Request the COA or contact us for optimization guidance and capacity data.
• Can I reuse these beads?
  Yes. After elution, regenerate beads by washing with neutral buffer and storing at 2–8°C. Reusability depends on the strength of your elution conditions; request lot documentation for regeneration protocols.
• How should I store them?
  Keep at 2–8°C. Gently mix before use to ensure even suspension.
• Can I get a COA or technical data?
  Yes. Request a quote or contact us and we will provide available lot documentation including ligand density, binding capacity, and performance specifications.

References

• Grodzki AC, Berenstein E. Antibody purification: affinity chromatography - protein A and protein G Sepharose. Methods Mol Biol. 2010;588:33-41.
• Blank K, Lindner P, Diefenbach B, Plückthun A. Self-immobilizing recombinant antibody fragments for immunoaffinity chromatography: generic, parallel, and scalable protein purification. Protein Expr Purif. 2002;24(2):313-22.
• Babashak JV, Phillips TM. Isolation of a specific membrane protein by immunoaffinity chromatography with biotinylated antibodies immobilized on avidin-coated glass beads. J Chromatogr. 1989;476:187-94.