The amino acid composition of hepatitis B surface antigen (HBsAg) purified from plasma of asymptomatic carriers was examined for further structural analyses. The protein of HBsAg spherical particles was characterized by the high contents of cystine, proline and tryptophan residues. A high α-helical content of HBsAg was discussed on amino acid composition.
About this Journal The Tohoku Journal of Experimental Medicine (TJEM) was founded in 1920
by professors of Tohoku Imperial University, Medical School.
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just after the World War II.
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