| Literature DB >> 6337369 |
A Miyanohara, A Toh-e, C Nozaki, F Hamada, N Ohtomo, K Matsubara.
Abstract
The DNA sequence coding for hepatitis B virus surface antigen (HBsAg) was placed under control of the repressible acid phosphatase promoter of the yeast Saccharomyces cerevisiae in a plasmid capable of autonomous replication in both yeast and Escherichia coli. Yeast transformed by this plasmid synthesized up to 5 X 10(5) molecules per cell of immunologically active HBsAg polypeptide in phosphate-free medium. The HBsAg polypeptides produced in the yeast cells were assembled into 20- to 22-nm spherical or oval particles and were immunogenic.Entities:
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Year: 1983 PMID: 6337369 PMCID: PMC393297 DOI: 10.1073/pnas.80.1.1
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205