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. 1972 Jun;9(6):1017–1026. doi: 10.1128/jvi.9.6.1017-1026.1972

Immunological Reactivity of Antisera Prepared Against the Sodium Dodecyl Sulfate-Treated Structural Polypeptides of Adenovirus-Associated Virus

F Brent Johnson 1,2, Neil R Blacklow 1,2, M David Hoggan 1,2
PMCID: PMC356408  PMID: 4338635

Abstract

The preparation of antisera to the three purified sodium dodecyl sulfate (SDS)-treated polypeptide components (VP1, VP2, VP3) of adenovirus-associated virus (AAV) type 3H is described. In immunofluorescence tests (FA), these antisera stained heat-stable antigens with distinct morphologies in cells co-infected with either adenovirus or herpes simplex virus. Kinetic studies of antigen formation showed that VP1 antiserum first stained the cytoplasm (14 hr) and later (by 18 hr) stained both cytoplasmic and intranuclear areas. VP2 antiserum stained only discrete intranuclear areas, and VP3 antiserum stained nearly the entire nucleus. All three VP antigens appeared at about the 14th hr postinfection, about 2 hr prior to the appearance of whole virion antigen. The VP antisera cross-reacted in FA with AAV types 1 and 2 (all at one-eighth of the homologous titer), but did not react with other parvoviruses, i.e., rat virus, hemadsorbing enteric virus of calves, minute virus of mice, or H-1 virus. These non-neutralizing antisera reacted specifically with SDS-treated AAV virion antigens in complement fixation and immunodiffusion tests, and antiserum prepared against SDS-treated helper adenovirus structural polypeptides reacted with adenovirus polypeptide antigens. All antisera to SDS-treated polypeptides were specific for new antigens revealed on the dissociated peptides and did not react with whole virions, whereas whole-virion antisera did not cross-react with the polypeptide antigens. These findings suggest that antigens unique to the polypeptides of AAV are revealed by SDS treatment and that these antigens can be detected in cells prior to the folding of the polypeptides into the molecular configuration they possess as virion subunits. These results also indicate that at least one AAV polypeptide component is synthesized in the cell cytoplasm.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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