The Journal of Experimental Medicine
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The Journal of Experimental Medicine, Vol 118, 295-306, Copyright © 1963, by The Rockefeller Institute

ARTICLE

STRUCTURE OF TYPE 5 ADENOVIRUS : I. ANTIGENIC RELATIONSHIP OF VIRUS-STRUCTURAL PROTEINS TO VIRUS-SPECIFIC SOLUBLE ANTIGENS FROM INFECTED CELLS



Wesley C. Wilcox Ph.D.1 and Harold S. Ginsberg M.D.1

1 From the Department of Microbiology, University of Pennsylvania, Philadelphia

Type 5 adenovirus was purified by fluorocarbon (freon 113) treatment followed by banding in a CsCl equilibrium density gradient. This method permitted separation of virus from normal host cell materials and virus-specific soluble antigens. Virus banded in CsCl with a mean bouyant density of 1.3349 gm/cm3. The three virus-specific soluble antigens (group- and type-specific antigens and toxin) banded together with a mean bouyant density of 1.2832 gm/cm3. The group-specific antigen was the predominant antigen of the purified virus particle, whereas the group- and type-specific antigens were present in equal titers in the antigen band. Infectious virus particles were inactivated by prolonged dialysis at pH 10.5. Centrifugation of inactivated virus preparations in a CsCl equilibrium density gradient resulted in separation of virus DNA from specific antigen: the antigens banded with a mean bouyant density of 1.2832 gm/cm3 and the DNA sedimented to the bottom of the tube. The predominant antigen derived from purified virus particles was the group-specific antigen and it was in the same relative proportion to the type-specific antigen as measured in intact particles. The antigens derived from disrupted virus were immunologically identical with the soluble virus antigens present in infected cells.

Submitted on April 17, 1963


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