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Endo-N-acetyl-beta-D-glucosaminidase H (Endo H) was purified to homogeneity (3000-fold) from a culture filtrate to Streptomyces plicatus. The key step was substrate-affinity chromatography, which afforded a 1000-fold purification and yielded a protease- and exoglycosidase-free preparation of Endo H. Proteins from the crude sample were applied to the substrate-affinity column, consisting of yeast-invertase glycopeptides bound to Sepharose-immobilized concanavalin A. After washing off the unbound proteins, Endo H was quantitatively eluted by methyl alpha-D-mannopyranoside. Various conditions were tested to achieve an optimal binding of Endo H to this substrate-affinity gel. After substrate-affinity chromatography, Endo H was separated from the coeluted gylcopeptide substrate and some protein impurities by gel filtration and hydrophobic chromatography.
|Item Type:||Journal Article, refereed, original work|
|Communities & Collections:||07 Faculty of Science > Institute of Molecular Life Sciences|
|DDC:||570 Life sciences; biology|
|Date:||15 June 1989|
|Deposited On:||11 Feb 2008 13:16|
|Last Modified:||23 Nov 2012 16:28|
|WoS Citation Count:||1|
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