A novel Hansenula polymorpha gene coding for ?1,6- mannosyltransferase and process for the production of recombinant glycoproteins with Hansenula polymorpha mutant strain deficient in the same gene

摘要

Disclosed are a novel Hansenula polymorpha gene coding for α-1,6-mannosyltransferase initiating outer chain elongation, an H. polymorpha mutant strain having a deficiency in the gene, and a process for producing a recombinant glycoprotein using such a mutant strain.