Fungal strains and use thereof in antibiotic production
First Claim
Patent Images
1. A process of preparing lovastatin which comprises fermenting a nutrient medium with a transformed fungal microorganism of an Aspergillus strain naturally incapable of expressing lovastatin but which has been transformed to contain foreign DNA derived from a lovastatin-producing Aspergillus terreus species and coding for the enzymes capable of synthesizing lovastatin, and a selectable marker, and recovering the lovastatin from the nutrient medium.
1 Assignment
0 Petitions
Accused Products
Abstract
Lovastatin is produced by a process of fermentation using a fungal transformant produced by introducing into a non-lovastatin expressing Aspergillus strain such as a strain of Aspergillus oryzae the DNA of a lovastatin-expressing strain of Aspergillus terreus .
32 Citations
11 Claims
- 1. A process of preparing lovastatin which comprises fermenting a nutrient medium with a transformed fungal microorganism of an Aspergillus strain naturally incapable of expressing lovastatin but which has been transformed to contain foreign DNA derived from a lovastatin-producing Aspergillus terreus species and coding for the enzymes capable of synthesizing lovastatin, and a selectable marker, and recovering the lovastatin from the nutrient medium.
- 7. Fungal transformants capable of expressing the enzymes for synthesizing lovastatin, said transformants being strains of an Aspergillus sp. naturally incapable of lovastatin expression but containing foreign DNA derived from a lovastatin producing Aspergillus terreus strain and containing genes coding for the enzymes capable of synthesizing lovastatin.
-
11. The fungal transformant ATCC 74135.
Specification