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:
Oct. 12, 1999
Filed:
Jun. 23, 1997
Toshihiko Ashikari, Takatsuki, JP;
Hiroto Kondo, Fuchu, JP;
Keiko Sakakibara, Muko, JP;
Hiroyuki Araki, Minoo, JP;
Yasuji Oshima, Takatsuki, JP;
Suntory Limited, Osaka, JP;
Abstract
A DNA construct wherein a DNA fragment which is recombinable in yeast chromosomal DNA is directly or indirectly linked at both ends of a DNA fragment which comprises a pair of R sensitive sequences oriented in the same direction and flaking both an R gene placed under the control of an inducible promoter and an expressible selective marker gene, which is a DNA construct designed with the R sensitive sequences non-symmetrically shortened, so that no functionable R sensitive sequence remains after the R sensitive sequence recombination has occurred by expression of the R gene and the selective marker has been removed. Since no functionable R sensitive sequence remains after removal of the selective marker, recombination does not occur again, and thus the same selective marker may be used for multiple insertions of foreign genes.