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The surface antigen gene of HBV (adr subtype) is inserted into the YEP 51 which is replicated and selected in E. coli and baker yeast Saccharomyces cerevisiae. The HBsAg gene can be expressed in yeast under GAL-10 promoter control. The protein synthesized in yeast is assembled into particles that have the same size and shape as particles isolated frown plasma. One μg surface antigen can be yielded in 100ml culture.
The surface antigen gene of HBV (adr subtype) is inserted into the YEP 51 which is replicated and selected in E. coli and baker yeast Saccharomyces cerevisiae. The HBsAg gene can be expressed in yeast under GAL-10 promoter control. The protein synthesized in yeast is assembled into particles that have the same size and shape as particles isolated frown plasma. One μg surface antigen can be yielded in 100ml culture.