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Biochemical estimation of hepatitis B surface antigen in recombinant yeast
Author(s) -
Wingfield Paul T.,
Graber Pierre,
Payton Mark A.
Publication year - 1987
Publication title -
yeast
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.923
H-Index - 102
eISSN - 1097-0061
pISSN - 0749-503X
DOI - 10.1002/yea.320030107
Subject(s) - biology , recombinant dna , yeast , antigen , virology , microbiology and biotechnology , biochemistry , genetics , gene
Purified recombinant hepatitis B surface antigen separated on polyacrylamide gels in the presence of sodium dodecyl sulphate has a very low staining index with Coomassie blue relative to a number of standard proteins. In contrast the protein stains better than average with silver nitrate. This property has been used to develop a semi‐quantitative method of estimation of recombinant surface antigen in extracts of Saccharomyces cerevisiae producing this protein. The method can be used to follow purification protocols. It is quick, simple and since it measures the surface antigen biochemically, is independent of the aggregation state or conformation of the protein, a factor which can affect enzyme‐linked immunoassays which rely on antigen–antibody interactions.