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. 1972 Aug;10(2):244–255. doi: 10.1128/jvi.10.2.244-255.1972

Ribonucleic Acid Species of Intracellular Nucleocapsids and Released Virions of Vesicular Stomatitis Virus

Michael P Kiley a,1, Robert R Wagner a
PMCID: PMC356456  PMID: 4345058

Abstract

Infection of chicken embryo cells with vesicular stomatitis (VS) virus resulted in variable production of three classes of intracellular viral ribonucleocapsids with sedimentation coefficients of approximately 140S, 110S, and 80S, as well as three corresponding classes of released virions designated B, LT, and T. Intracellular nucleocapsids of each class contained three proteins of which the major N protein was firmly bound, and the minor L and NS1 proteins were readily dissociated with 0.5 m NaCl. The ribonucleic acid (RNA) species extracted from B, LT, and T virions, and from corresponding intracellular nucleocapsids, contained RNA species with approximate molecular weights of 3.2 × 106, 2.0 × 106, and 106, respectively, as determined by polyacrylamide gel electrophoresis. These values are roughly equivalent to sedimentation coefficients of 42S, 28S, and 23S for each of the virion and nucleocapsid RNA species. Cells infected at high multiplicity with undiluted passage VS virus gave rise primarily to virions and nucleocapsids containing 23S RNA, whereas cells productively infected with purified B virions produced predominantly B and LT virions and nucleocapsids. At late stages in the productive cycle of infection, more virions containing 42S RNA were produced, but the intracellular pool of nucleocapsids containing 28S and 23S RNA remained relatively constant. Additional studies by more refined techniques are required to test the hypothesis that nucleocapsids containing 28S and 23S RNA are precursors of the 42S RNA in infectious VS-B virions and that production of defective T and LT virions results from failure of ligation of the RNA precursors.

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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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