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:
Nov. 23, 1999

Filed:

Apr. 01, 1997
Applicant:
Inventors:

Allan Frankel, Mill Valley, CA (US);

Ruoying Tan, San Francisco, CA (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12Q / ; C12N / ; C12N / ; C07H / ;
U.S. Cl.
CPC ...
435-6 ; 435-4 ; 4351722 ; 4351723 ; 435240 ; 435-731 ; 435 70 ; 43525421 ; 536 231 ; 536 241 ; 536 234 ; 536 243 ;
Abstract

The invention provides new methods for screening libraries of peptides and other compounds for a desired property in eucaryotic cells. The methods are premised, in part, on the unexpected observation that the contents of procaryotic or lower eucaryotic cells, such as yeast, can be transferred to recipient eucaryotic cells in an essentially clonal manner by protoplast fusion of the respective cells. Applications of the methods include screening peptides in eucaryotic cells substantially incapable of episomal replication of transferred nucleic acid fragments; screening in eucaryotic cells peptides or secondary metabolites produced in procaryotic cells; and screening a library of peptides for capacity to bind a selected RNA in eucaryotic cells.


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