CaptureSelect CH1-XL Affinity Matrix is the improved version of CaptureSelect IgG-CH1 Affinity Matrix. The specificity is the same, but it features a wider elution range (pH 3.0–4.5), increased binding capacity, and improved stability at higher pH.
CaptureSelect CH1-XL Affinity Matrix recognizes the CH1 domain of human IgG antibodies, enabling purification of all subclasses (1, 2, 3, and 4) of human IgG and Fab fragments, independent of the light-chain isotype and source material.
CaptureSelect CH1-XL Affinity Matrix features include: • Platform approach for purification of IgGs and their Fab fragments directly from complex source materials in a single step with high purity and yield • Elution possible at pH 4.0–4.5 with 50 mM acetate buffer • No co-purification of overproduced free light chain due to selectivity for the CH1 domain • No binding to bovine antibodies, so presence of fetal bovine serum is not a problem • Excellent pH stability up to 50 mM NaOH for limited exposure • Excellent scalability • Non-animal derived
Free of animal components CaptureSelect products contain affinity ligands created by a proprietary technology based on camelid-derived single-domain antibody fragments. The ligand is a 13-kDa fragment comprising the three complementarity-determining regions (CDRs) that form the antigen-binding domain, efficiently produced by the yeast Saccharomyces cerevisiae in a production process free of animal components.
Matrix: agarose-based, epoxide-activated Average particle size: 65 ± 10 µm Ligand: CaptureSelect CH1-XL affinity ligand Ligand coupling method: epoxide coupling Binding capacity: >15 mg/mL human Fab fragment depending on flow rate, column height, contact time. For humanized Fabs lower capacities can be observed. Elution conditions: 100 mM glycine buffer, pH 3.0; 50 mM acetate buffer, pH 4.0–4.5 Flow rate: 50–200 cm/h (up to 2 bar) Formulation buffer: 20% (v/v) ethanol
For Research Use or Further Manufacturing. Not for diagnostic use or direct administration into humans or animals.
CH1-XL Affinity Matrix
Approved for shipment at Room Temperature or on Wet Ice, Wet Ice