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:
Jul. 09, 1991
Filed:
Jan. 26, 1990
Paul F Schendel, Wayland, MA (US);
Marc Nasoff, San Diego, CA (US);
Patricia Raney, Somerville, MA (US);
Genetics Institute, Inc., Cambridge, MA (US);
Abstract
An improved bacterial host cell useful for the inducible production and secretion in high yields of a heterologous protein is provided which contains a gene encoding the heterologous protein operatively linked to a secretory leader-encoding sequence and to an expression control sequence which contains a promoter region; and a second DNA sequence encoding a repressor capable of binding to said promoter region. The cell contains at least a mutation in the repressor binding region of the promoter or a mutation in the promoter binding region of the repressor-encoding sequence; or mutations in both regions. These mutation(s) lower the frequency of transcriptional induction by the promoter from the observed with the wild-type promoter and/or repressor-encoding sequence, resulting in higher yields of secreted heterologous protein.