The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Mar. 17, 1992

Filed:

Jan. 06, 1989
Applicant:
Inventors:

Robert C Ladner, Ijamsville, MD (US);

Sonia K Guterman, Belmont, MA (US);

Rachel B Kent, Wilmington, MA (US);

Arthur C Ley, Newton, MA (US);

Assignee:

Protein Engineering Corporation, Cambridge, MA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C12N / ; C12N / ; C12P / ;
U.S. Cl.
CPC ...
435 691 ; 4351723 ; 4352523 ; 4353201 ;
Abstract

Novel DNA-binding proteins, especially repressors of gene expression, are obtained by variegation of genes encoding known binding protein and selection for proteins binding the desired target DNA sequence. A novel selection vector is used to reduce artifacts. Heterooligimeric proteins which bind to a target DNA sequence which need not be palindromic are obtained by a variety of methods, e.g., variegation to obtain proteins binding symmetrized forms of the half-targets and heterodimerization to obtain a protein binding the entire asymmetric target.


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