Novel Hansenula Polymorpha Gene Coding for Dolichyl-Phosphate- Mannose Dependent Alpha-1,3 Mannosyltransferase and Process for the Production of Recombinant Glycoproteins With Hansenula Polymorpha Mutant Strain Deficient in

Abstract

The present invention relates to a process for producing a human-type glycoprotein having reduced glycosylation by genetically manipulating an enzyme involved in glycosylation using a Hansenula polymorpha system. In detail, the present invention relates to a process for producing a human-type glycoprotein by identifying a dolichyl-phosphate-mannose dependent ¥á-1,3-mannosyltransferase gene from H. polymorpha, constructing a H. polymorpha mutant strain producing a glycoprotein exhibiting reduced glycosylation by disrupting the identified gene, and subjecting the mutant strain to various genetic manipulations for the synthesis of human-type glycan.

Dependencies are inferred from the claim text.