Thermo Scientific™ CaptureSelect™ CH1-XL RoboColumn™ Pre-packed Column

CaptureSelect CH1-XL Affinity Matrix recognizes the CH1 domain of human IgG antibodies, thereby enabling purification of all Fab fragments, independent of the light-chain type (kappa or lambda) and without binding of over-expressed light chain and light-chain dimers. In addition, it can be used for the purification of human IgGs from all four subclasses (1, 2, 3, and 4).

Features of this affinity matrix include:

• Platform approach for purification of high quality and correctly assembled human Fab fragments
• No co-purification of over-expressed free light chains due to selectivity for the CH1 domain
• Elution possible at pH 4.0–4.5 with 50 mM acetate buffer
• Caustic cleaning with up to 50 mM NaOH
• Excellent scalability
• No cross-binding to bovine IgG, therefore presence of fetal bovine serum is not a problem
• Non-animal-derived

Free of animal components

CaptureSelect products contain affinity ligands based on recombinant single-domain antibody fragments (VHH) created by a proprietary technology. The VHH affinity ligand is a 12 to 15 kDa fragment comprising the three complementarity-determining regions (CDRs) that form the antigen-binding domain, efficiently produced in the yeast Saccharomyces cerevisiae by a production process free of any animal components (Animal Origin-Free).

Characteristics

• Column size: 200 μL and 600 μL, 1 strip, 8 columns (8-row)
• Column dimension: 200 μL: 5 x 10 mm
• Column dimension: 600 μL: 5 x 30 mm
• Matrix: agarose based, epoxide-activated
• Average particle size: 65 ± 10 μm
• Ligand: CaptureSelect CH1-XL affinity ligand
• Ligand coupling: epoxide coupling
• Binding capacity: >15 mg/mL human Fab fragment depending on flow rate, column height, contact time. For humanized Fabs, lower capacities may be observed.
• Elution conditions: 100 mM glycine buffer, pH 3.0; 50 mM acetate buffer, pH 4.0–4.5
• Formulation buffer: 20% (v/v) ethanol
• Operating pressure: 2 bar (maximum)
• Flow rate: 16–150 cm/h

RoboColumn is a trademark of Repligen.