Glyco-Engineered Yeast for Therapeutic Protein Production

Abstract

The invention relates to the field of glycoprotein production means and methods. More specifically, the present invention provides for a novel yeast strain with a mutant Och1 gene resulting in modified N-glycosylation properties of said strain. Even more specifically, said mutant Och1 gene comprises a sequence coding for a mutant OCH1 protein in which one amino acid near the catalytic site, corresponding to position 151 of the OCH1 protein of the methylotrophic wild type Pichia pastoris strain, is deleted. More specifically, the use of said mutant yeast strain for recombinant expression of glycoproteins results in more homogenous mammalian-like N-glycan structures on said heterologously produced glycoproteins.

Dependencies are inferred from the claim text.