Abstract
β-Cyclodextrin tetradecasulfate was found to have a very strong affinity for fibroblast growth factor (FGF) and could substitute for heparin in FGF purification. Basic FGF was purified about 200,000-fold from a rat chondrosarcoma using a method of biaffinity chromatography in which the β-cyclodextrin tetradecasulfate polymer was mixed with copper-Sepharose. This method takes advantage of the strong affinity of FGF for both β-cyclodextrin tetradecasulfate and copper.
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