New Bio-Rad Technical Paper Compares Currently Available Affinity Columns

28 May 2008

Product news

Bio-Rad Laboratories, Inc., a multinational manufacturer and distributor of life science research and clinical diagnostic products, today announced the availability of a technical bulletin (number 5574A) that proves Bio-Rad’s Bio-Scale™ Mini Profinity™ cartridges offer comparable or better yield and purity to other commercially available prepacked affinity columns. The study was performed using Bio-Rad’s Profinia™ protein purification system.

Affinity-tagged purification of recombinant proteins is a common procedure performed in laboratories using glutathione-S-transferase (GST) and polyhistidine (His) affinity tags. The Profinia protein purification system simplifies the process by automating the purification and desalting of these tagged proteins in a single step.

Bio-Scale Mini Profinity chromatography cartridges are prepacked, disposable, and designed for use on chromatography instruments. The cartridges offer a number of advantages such as ease of use and reproducibility. The Profinia system is a chromatography instrument that contains preprogrammed optimized methods for affinity purification of tagged proteins and antibodies resulting in increased efficiency and reproducibility in the laboratory. It takes as little as 30 minutes to purify the protein of interest and dramatically reduces time and effort.

Availability

Bulletin number 5574A is available from your local Bio-Rad sales office. It may also be downloaded via the article webpage.

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AntibodiesAntibodies are used in techniques such as confocal and fluorescence microscopy, flow cytometry, ELISA, ELISPOT, immunohistochemistry, western blotting and immunopreciptation. Select specific antigen reactivity, high specific affinity, low non-specific binding, monoclonal or polyclonal, primary or secondary antibodies and associated conjugates such as an enzyme or dye for visualization.Protein PurificationProtein purification is a vital step in drug discovery, therapeutics, biotech and life science research. The purification process typically involves subcellular or membrane protein extraction with cell lysis kits, separation of proteins from cell debris by filtration or spin columns, and the isolation of proteins of interest from other proteins and impurities with affinity purification (including fusion protein tags and antibody binding proteins A, G and L), immunoprecipitation or chromatographic methods, such as ion exchange, size exclusion and immobilized metal affinity chromatography. All purification methods come in multiple formats for your laboratory needs, including agarose or magnetic beads, resins, columns and filter plates. Find the best protein purification equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.