METHODS FOR INCREASING N-GLYCAN OCCUPANCY AND REDUCING PRODUCTION OF HYBRID N-GLYCANS IN PICHIA PASTORIS STRAINS LACKING ALG3 EXPRESSION

摘要

Methods are disclosed for increasing the yield and N-glycosylation site occupancy of paucimannose or complex N-glycans of recombinant glycoproteins produced in a recombinant host cell lacking dolichyl-P-Man:Man5GlcNAc2-PP-dolichyl alpha-1,3 mannosyltransferase (Alg3p) activity. In particular, the present invention provides recombinant host cells for producing recombinant glycoproteins that comprise a disruption of the expression of an OS-9 family gene in the host cell and which overexpress one or more Trypanosoma brucei STT3 proteins.