Thermo Scientific™ SulfoLink™ Coupling Resin

Description

• Thermo Scientific™ SulfoLink Coupling Resin is iodoacetyl-activated for the covalent immobilization of sulfhydryl-containing peptides or proteins for affinity purification
• SulfoLink Coupling Resin is porous, crosslinked 6% beaded agarose that has been activated with iodoacetyl groups
• When incubated with a solution of peptide or protein that contains reduced cysteine residues, the iodoacetyl groups react specifically and efficiently with the exposed sulfhydryls (-SH) to form covalent and irreversible thioether bonds that permanently attach the peptide or protein to the resin
• The result is a custom-made affinity resin for purification of antibodies, antigens and other molecules of interest
• Complete SulfoLink Immobilization Kits are available for peptides and proteins
• Each kit contains all the reagents for preparing the respective peptide or protein sample and five columns containing 2mL of SulfoLink Resin that can be used in either gravity-flow or centrifuge format for efficient coupling reactions and multiple cycles of affinity purification
• A single-column Trial Kit for use with either peptides or proteins is also available, or the SulfoLink Coupling Resin can be purchased separately
• Highlights: Specific conjugation through sulfhydryl (-SH) groups – the iodoacetyl groups react specifically with sulhydryls to form irreversible thioether bonds Separate kits optimized for peptides or proteins – kits include optimized reagents for preparing peptide or protein samples for efficient immobilization Fast – spin columns increase protocol speed; prepare and couple samples in 2 hours (peptides) to 3.5 hours (proteins) Flexible coupling conditions – use pH 7.5 to 9.0 aqueous buffers, organic solvent (e.g., 20% DMSO) or denaturant (guanidine·HCl), as needed for protein or peptide solubility during coupling reaction Easy-to-follow instructions – streamlined protocols for sample preparation, immobilization and affinity purification High capacity – immobilize 1 to 2mg peptide or 2 to 20mg protein per 2mL column of SulfoLink Coupling Resin Includes: Kits contain SulfoLink Resin Columns (2mL), protein or peptide preparation reagents (e.g., reducing agent), coupling buffer, wash solution, L-cysteine solution (for quenching) and desalting columns (protein kit only) Recommended for: Immobilize peptides having terminal cysteine residues to purify antibodies that were generated against peptide immunogens prepared by maleimide conjugation; Immobilize antibodies in oriented manner through hinge-region sulfhydryls to ensure that antigen binding sites are not sterically hindered for antigen affinity purification