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. 1977 Jan;21(1):199–214. doi: 10.1128/jvi.21.1.199-214.1977

Synthesis and processing of the precursor to the major core protein of adenovirus type 2.

E Everitt, S A Meador, A S Levine
PMCID: PMC353806  PMID: 833922

Abstract

An isopycnic Metrizamide-detergent gradient system was developed in which the newly synthesized precursor (polypeptide P-VII) to the major core protein of adenovirus type 2 (polypeptide VII) was confined to a spectrum of complexes with densities equal to or higher than that of adenovirions. The majority of the newly synthesized P-VII was, at the beginning of the logarithmic period of virus production, present as an entity of protein density. This pool of P-VII was efficiently depleted. P-VII was also associated with high-molecular-weight structures of intermediate density, sharing some properties with empty capsids or incomplete particles. The transfer of P-VII from the intermediate-density region was not quantitative, and only particles of true virion density subsequently contained polypeptide VII. No structures equivalent to the core structure of disrupted virions or identical to incomplete particles were detected in this system. A temperature-dependent transition of radioactivity from polypeptide P-VII into polypeptide VII was also detectable after in vitro incubation of P-VII-containing complexes. Addition of Ad2-infected cell extracts was required for processing of complexes derived from regions of protein density, whereas P-VII was processed spontaneously upon incubation in complexes of virion density.

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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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