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Evidence from Cauliflower Mosaic Virus Virion DNA for Additional Discontinuities in the Plus Strand

Overview
Specialty Biochemistry
Date 1985 Oct 25
PMID 2414738
Citations 1
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Abstract

Two-dimensional electrophoresis of cauliflower mosaic virus (CaMV) virion DNA and analysis of Southern blots using (+) strand-specific probes to the 5' termini of the beta (5.4 Kb) and alpha (2.6 Kb) strands, revealed the presence of molecules in addition to those predicted from the known structure of CaMV DNA. The presence of 8 Kb molecules of (+) sense after denaturation suggested that a small proportion of circular molecules have only a single discontinuity in the (+) strand. Other molecules, probably 5' coterminal with the beta strand but smaller than 5.4 Kb, indicated that a minority of the circular full length CaMV DNA contain additional gaps in the (+) strand. Consequently, molecules equivalent to the remainder of the beta strand could be identified using a single strand probe for a region towards the 3'-end of the beta strand. Computer analysis of the nucleotide sequence of CaMV DNA in the region of the proposed additional discontinuities revealed regions displaying some homology with the major (+) strand priming sites at the 5' ends of the beta and alpha strands. It is our contention that the additional (+) strand molecules of beta specificity are a consequence of minor (+) strand priming sites.

Citing Articles

Hairpin DNAs of cauliflower mosaic virus generated by reverse transcription in vivo.

Covey S, Turner D EMBO J. 1986; 5(11):2763-8.

PMID: 16453720 PMC: 1167220. DOI: 10.1002/j.1460-2075.1986.tb04565.x.

References
1.
Rigby P, Dieckmann M, Rhodes C, Berg P . Labeling deoxyribonucleic acid to high specific activity in vitro by nick translation with DNA polymerase I. J Mol Biol. 1977; 113(1):237-51. DOI: 10.1016/0022-2836(77)90052-3. View

2.
Taylor J, Cywinski A, Smith J . Discontinuities in the DNA synthesized by an avian retrovirus. J Virol. 1983; 48(3):654-9. PMC: 255397. DOI: 10.1128/JVI.48.3.654-659.1983. View

3.
Hsu T, Taylor J . Single-stranded regions on unintegrated avian retrovirus DNA. J Virol. 1982; 44(1):47-53. PMC: 256239. DOI: 10.1128/JVI.44.1.47-53.1982. View

4.
BOONE L, Skalka A . Viral DNA synthesized in vitro by avian retrovirus particles permeabilized with melittin. II. Evidence for a strand displacement mechanism in plus-strand synthesis. J Virol. 1981; 37(1):117-26. PMC: 170988. DOI: 10.1128/JVI.37.1.117-126.1981. View

5.
Pfeiffer P, Hohn T . Involvement of reverse transcription in the replication of cauliflower mosaic virus: a detailed model and test of some aspects. Cell. 1983; 33(3):781-9. DOI: 10.1016/0092-8674(83)90020-x. View