Linear, single-stranded deoxyribonucleic acid isolated from Kilham rat virus.

Abstract:

:Kilham rat virus (KRV) was grown in a rat nephroma cell line and was purified by two isopycnic centrifugations in cesium chloride. The virus contains single-stranded deoxyribonucleic acid (DNA) with a molecular weight of approximately 1.6 x 10(6). The DNA was extracted from the virion by both phenol extraction and by 2% sodium dodecyl sulfate at 50 C. KRV DNA, extracted by both procedures, was observed in an electron microscope by using a cytochrome c or diethylaminoethyldextran monolayer. The DNA was also exposed to exonuclease I, an enzyme which hydrolyzes specifically linear, single-stranded DNA. Hydrolysis of 70 to 80% of the DNA was observed. Both the enzymatic and the electron microscope studies support the conclusion that extracted KRV DNA is a single-stranded, linear molecule. The length of the DNA was measured in the electron microscope and determined to be 1.505 +/- 0.206 mum.

journal_name

J Virol

journal_title

Journal of virology

authors

Salzman LA,White WL,Kakefuda T

doi

10.1128/JVI.7.6.830-835.1971

subject

Has Abstract

pub_date

1971-06-01 00:00:00

pages

830-5

issue

6

eissn

0022-538X

issn

1098-5514

journal_volume

7

pub_type

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