Back to results
US 4,812,405 AGranted
Double auxotrophic mutants of Pichia pastoris and methods for preparation
AssigneePhillips Petroleum Company
InventorsStephen V. Lair, Mary E. Digan
Life of this patent
Estimating the term…
Abstract
Processes for the preparation of double auxotrophic mutants of Pichia pastoris are provided, as well as novel double auxotrophic mutant strains produced thereby.
Claims2
A yeast cell of the species Pichia pastoris as a host capable of being transformed with recombinant DNA material, wherein said host is defective in histidinol dehydrogenase activity and in argininosuccinate lyase activity.
Dependencies are inferred from the claim text.