Methods for reducing aggregate content in protein preparations
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United States of America Patent
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May 22, 2018
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app pub date -
Feb 5, 2014
filing date -
Feb 6, 2013
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Abstract
A method of reducing aggregate and product-contaminant complex content in a protein preparation including a desired protein includes (i) contacting the protein preparation with at least one solid surface comprising at least one surface-bound ligand capable of binding a metal, the surface-bound ligand being capable of binding a metal is initially substantially devoid of a metal, the operating conditions are selected to substantially prevent the binding of the desired protein to the at least one solid surface and (ii) separating the protein preparation from the surface-bound ligand, such that when more than one surface-bound ligand is present, each surface-bound ligand is independently either of the same net charge or charge neutral.
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