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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Use of metal chelate affinity chromatography for removal of zinc ions from alkaline phosphatase from Escherichia coli.

Alkaline phosphatase from Escherichia coli (APEC) is not retained at 4 degrees C on a metal-free tris(carboxymethyl)ethylenediamine (TED) column, but at 15 degrees C the metalloenzyme becomes bound to the gel. Chromatography of phosphatase on metal-free TED gel indicates a decline in its enzymic activity and zinc content to about 26% and 40%, respectively. The activity of chromatographed APEC can be partially restored by addition of zinc ions, indicating that metal-free TED gel is capable of removing zinc ions from alkaline phosphatase.[1]

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