DNA Contained by Two Densonucleosis Viruses

Overview

Journal J Virol

Publisher American Society for Microbiology

Date 1977 Jan 1

PMID 833929

Citations 8

Authors

D C Kelly

A H Barwise

I O Walker

Affiliations

Soon will be listed here.

Abstract

The DNA contained by particles of densonucleosis viruses 1 and 2 were analyzed within the particle, and properties of DNA extracted from these particles were determined. The DNA appears to exist as a single-stranded molecule with limited secondary structure within particles, as assessed by spectral changes induced by formaldehyde, melting profiles, and circular dichroism studies. The single-stranded DNA had an apparent molecular weight of 1.9 X 10(6) to 2.2 X 10(6) as assessed by differences in the molecular weight of virus particles and top component and percentage of nucleic acid. DNA extracted from virus particles in low-salt buffers possessed properties typical of a single-stranded molecule. Double-stranded DNA could be extracted from virus particles under appropriate high salt and elevated temperature. The linear double-stranded DNA extracted from both viruses had a molecular weight of about 3.9 X 10(6) to 4.1 ZX 10(6) determined by neutral sedimentation and electron microscopy and an equivalent genome size determined by reassociation kinetics. About 87% of the DNA was homologous between the two viruses.

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