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.
Patent No.:
Date of Patent:
Jun. 28, 1988
Filed:
May. 07, 1986
Applicant:
Inventors:
Keith C Backman, Bedford, MA (US);
Ramaswamy Balakrishnan, Framingham, MA (US);
Assignee:
Biotechnica International, Inc., Cambridge, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C12N / ; C12N / ; C07K / ;
U.S. Cl.
CPC ...
435232 ; 435233 ; 435317 ; 530350 ;
Abstract
Proteins having chorismate mutase-prephenate dehydratase (CMPD) activity, but lacking phenylalanine sensitivity are produced by genetic engineering. The proteins contain a sequence substantially corresponding to the N-terminal 337 amino acids of Escherichia coli CMPD. Expression vectors including genes coding for those proteins and regulatory DNA enabling their expression are used to transform host microorganisms, which are cultured to produce phenylalanine.