Biological, physical, and chemical properties of Eastern equine encephalitis virus. I. Purification and physical properties.

Abstract:

:A new purification procedure was adopted for Eastern equine encephalitis virus which does not subject the virus to pelleting at any stage. Three- to 4-liter volumes were passed through a diethylaminoethyl cellulose column. The virus-containing fractions were banded on a sucrose cushion and finally concentrated in an isopycnic band in a linear sucrose gradient. This method reduced the volume 1,000-fold with a concomitant increase in viral titer, i.e., better than 90% recovery. Numerous criteria have been used to establish that this viral preparation was essentially free from cellular debris and nonviral material. Physical studies on this purified viral product were initiated. The sedimentation coefficient as determined by band sedimentation was 240S, the buoyant density in sucrose was 1.18 g/cc, and the diameter of the virus was 54 nm. From the diameter and the buoyant density it was possible to calculate the molecular weight of a spherical particle. In this case, the calculated molecular weight for Eastern equine encephalitis virus was 58 x 10(6) daltons.

journal_name

J Virol

journal_title

Journal of virology

authors

Fuscaldo AA,Aaslestad HG,Hoffman EJ

doi

10.1128/JVI.7.2.233-240.1971

subject

Has Abstract

pub_date

1971-02-01 00:00:00

pages

233-40

issue

2

eissn

0022-538X

issn

1098-5514

journal_volume

7

pub_type

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