Bovine Serum Albumin Conjugated to Agarose Beads (High-Capacity) – Catalog #B2025633

BSA-Conjugated Agarose Beads, High-Capacity (Catalog #B2025633) are engineered for large-scale affinity purification and demanding protein separation workflows. These premium beads combine bovine serum albumin covalently linked to high-quality agarose microbeads with enhanced BSA loading or superior agarose support to maximize protein binding capacity. Supplied as a 5 mL suspension, this high-capacity formulation is ideal for processing large sample volumes or achieving exceptional protein recovery.

Scientific Overview

Bovine serum albumin (BSA) is a versatile 66 kDa protein whose multiple binding domains and hydrophobic surface patches enable interactions with a broad range of proteins, ligands, and biomolecules. When conjugated to high-capacity agarose beads, BSA serves as a powerful affinity ligand for large-scale protein capture and purification.

The high-capacity variant of this product features enhanced BSA loading density or superior agarose matrix properties, resulting in significantly greater protein binding capacity compared to standard formulations. This makes it ideal for:

• Large-scale affinity purification of proteins with high demand
• Pull-down and immunoprecipitation assays using large protein inputs
• Industrial and manufacturing-scale protein separations
• Comprehensive proteomic studies requiring maximum protein recovery
• Batch processing of multiple samples with consistent high capacity

Usage & Handling Guidance

Store the suspension at 2–8°C. Before use, gently resuspend by inverting 5–10 times; avoid vortexing to prevent aggregation and ensure uniform bead suspension.

• Large-volume workflows: For high-throughput applications, prepare beads in bulk and aliquot into working portions to minimize handling and preserve capacity.
• Equilibration: Wash with binding buffer (PBS or TRIS, pH 7–8) before use to remove storage protectants.
• Binding: Incubate protein solution with beads for 10–30 minutes (or longer for very large proteins) at room temperature or 4°C.
• Washing: Perform 3–5 washes with binding buffer. For stringent conditions, add mild detergent (0.05% Tween-20) or salt.
• Elution: Elute with elevated pH (0.1 M glycine pH 2.5) or high salt (1 M NaCl). The high capacity allows sequential elution rounds from the same bead batch.
• Regeneration: Wash extensively and store at 2–8°C in storage buffer or 20% ethanol for reuse over multiple cycles.

What You Get

• 5 mL of high-capacity BSA-conjugated agarose bead suspension
• Premium agarose matrix with enhanced BSA loading
• Significantly higher binding capacity than standard formulations
• Ready-to-use for large-scale batch and column-based purification
• For research use only (RUO)

Why Researchers Choose It

• Exceptional binding capacity for high-volume protein applications
• Excellent flow characteristics suitable for large-scale processing
• Durable agarose matrix allowing multiple regeneration cycles
• Superior protein recovery in pull-down and affinity workflows
• Cost-effective solution for manufacturing and industrial applications
• Consistent performance across batch processing runs

Frequently Asked Questions (FAQ)

• How does high-capacity differ from standard BSA-agarose beads?
  The high-capacity formulation provides greater BSA loading density or optimized agarose support, resulting in 30–50% higher protein binding capacity per unit volume compared to standard beads. See the product comparison or request the COA for specific capacity values.
• What is the typical binding capacity?
  Capacity varies by lot; high-capacity formulations typically bind 30–100 µg of target protein per mL of beads. Request the COA/TDS for your specific lot for exact values.
• Can I process very large protein samples?
  Yes. The high capacity makes these beads ideal for processing gram quantities of protein or large volumes of protein-containing solutions. Scale up the bead volume as needed according to your expected protein load.
• How many regeneration cycles can I perform?
  Agarose-based beads typically support 10–50+ regeneration cycles, depending on elution conditions and storage. Gentle elution (high salt) preserves capacity better than harsh conditions (low pH).
• Is this suitable for automated purification systems?
  Yes. The consistent bead properties and excellent flow characteristics make these beads compatible with most automated liquid handling and chromatography systems.

References

• Krämer M, Kissmann AK, Raber HF, Xing H, Favella P, Müller I, Spellerberg B, Weil T, Kubiczek D, Sihler S, Ziener U, Rosenau F. BSA Hydrogel Beads Functionalized with a Specific Aptamer Library for Capturing Pseudomonas aeruginosa in Serum and Blood. Int J Mol Sci. 2021;22(20).
• Lalli E, Silva JS, Boi C, Sarti GC. Affinity Membranes and Monoliths for Protein Purification. Membranes (Basel). 2019;10(1).
• Gerace E, Moazed D. Affinity Pull-Down of Proteins Using Anti-FLAG M2 Agarose Beads. Methods Enzymol. 2015;559:99-110.
• Amiri S, Mehrnia MR, Roudsari FP. Enhancing purification efficiency of affinity functionalized composite agarose micro beads using Fe(3)O(4) nanoparticles. J Chromatogr B Analyt Technol Biomed Life Sci. 2017;1041-1042:27-36.