Packaging of DNA in cauliflower mosaic virus and bacteriophage SD studied with magnetic birefringence

Magnetic birefringence measurements are reported on solutions of two double-stranded DNA containing viruses: icosahedral cauliflower mosaic virus (CaMV) and SD, an isometric bacteriophage with a short tail. Assuming the signal comes predominantly from the DNA, constraints can be put on its packing g...

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Veröffentlicht in:Virology (New York, N.Y.) N.Y.), 1986-12, Vol.155 (2), p.721-725
Hauptverfasser: Torbet, J, Timmins, P.A, Lvov, Y
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Lvov, Y
description Magnetic birefringence measurements are reported on solutions of two double-stranded DNA containing viruses: icosahedral cauliflower mosaic virus (CaMV) and SD, an isometric bacteriophage with a short tail. Assuming the signal comes predominantly from the DNA, constraints can be put on its packing geometry. The anisotropy of CaMV is consistent with the DNA having a near orthogonally wound spool-like structure. The DNA anisotropy is smaller in SD but is compatible with a spool-like structure if the windings are tilted about the spool axis or if a significant proportion of the DNA is effectively isotropically packed. Intermediate structures are also possible.
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source Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Access via ScienceDirect (Elsevier)
subjects ADN
BACTERIOFAGOS
BACTERIOPHAGE
BACTERIOPHAGES
Biological and medical sciences
DNA
Fundamental and applied biological sciences. Psychology
Microbiology
Phytopathology. Animal pests. Plant and forest protection
PLANT VIRUSES
Plant viruses and viroids
Systematics. Structure, properties and multiplication. Genetics
Virology
VIRUS DE LAS PLANTAS
VIRUS DES VEGETAUX
title Packaging of DNA in cauliflower mosaic virus and bacteriophage SD studied with magnetic birefringence
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