Chemistry: natural resins or derivatives; peptides or proteins; – Proteins – i.e. – more than 100 amino acid residues – Blood proteins or globulins – e.g. – proteoglycans – platelet...
Patent
1988-10-28
1991-07-02
Moskowitz, Margaret
Chemistry: natural resins or derivatives; peptides or proteins;
Proteins, i.e., more than 100 amino acid residues
Blood proteins or globulins, e.g., proteoglycans, platelet...
530416, 530417, 210635, 210656, 210674, C07K 1528, C07K 322, C07K 320
Patent
active
050286960
ABSTRACT:
A method of separating charged molecules having different numbers of charges thereon includes the step of passing the molecules to be separated through ion-exchange material such as an ion-exchange chromatograpy column in normal manner so that molecules to be separated bind to the ion-exchange material. Displacer molecules are then passed through the ion-exchange column to selectively release certain of the molecules to be separated from the ion-exchange material, while others of the molecules to be separated remain bound to the material. Rather than the displacer molecules having charges of a similar sign to the molecules to be separated so that the displacer molecules bind to the ion-exchange material in place of certain of the molecules to be separated thereby releasing them, the displacer molecules have charges of the same sign as the ion-exchange material and opposite the sign of the molecules to be separated so that certain of the molecules to be separated bind to the displacer molecules in place of the ion-exchange material and are thus released from the ion-exchange material and flow from the ion-exchange material with the diplacers. Displacers of various numbers of charges may be sequentially passed through the ion-exchange material in ascending number of charge order to thereby selectively release molecules to be separated. The last remaining molecules to be separated may be released selectively with displacer molecules or, may be released in known manner such as by elution.
REFERENCES:
patent: 4493907 (1985-01-01), Hedrick et al.
Scopes, Robert K., 1987, Protein Purification: Principles and Practice, Springer-Verlag, New York, pp. 156-167.
Peterson et al., 1984, Methods in Enzymology, 104: 113-133.
Peterson Elbert A.
Torres Anthony R.
Furman Keith C.
Moskowitz Margaret
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