Separation of proteins
First Claim
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1. A method for obtaining a crystallized microbial protein from an aqueous mixture of proteins, said method comprising of the steps of:
- (a) obtaining a microbial culture broth having a mixture of proteins, comprising a desired protein selected from the group consisting of an oxidoreductase, a protease, a lipase, a cellulase and an amylase;
(b) adjusting the salt concentration of said protein mixture at or below 1.5 Molar;
(c) adding a water soluble polymer to the protein mixture of step (b);
(d) stirring the polymer-containing protein mixture of step (c) for up to 48 hrs; and
(e) recovering the desired protein in crystalline form from the stirred mixture of step (d).
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Abstract
The present invention relates to a method of separating a protein, in particular an enzyme, from an aqueous solution of proteins, comprising (a) providing an aqueous mixture of proteins with a salt concentration at or below 1.5 Molar, to which a water soluble polymer has been added, and (b) recovery of the protein on crystalline form.
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Citations
19 Claims
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1. A method for obtaining a crystallized microbial protein from an aqueous mixture of proteins, said method comprising of the steps of:
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(a) obtaining a microbial culture broth having a mixture of proteins, comprising a desired protein selected from the group consisting of an oxidoreductase, a protease, a lipase, a cellulase and an amylase; (b) adjusting the salt concentration of said protein mixture at or below 1.5 Molar; (c) adding a water soluble polymer to the protein mixture of step (b); (d) stirring the polymer-containing protein mixture of step (c) for up to 48 hrs; and (e) recovering the desired protein in crystalline form from the stirred mixture of step (d). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification