• We are sorry, but NCBI web applications do not support your browser and may not function properly. More information
Logo of jvirolPermissionsJournals.ASM.orgJournalJV ArticleJournal InfoAuthorsReviewers
J Virol. Aug 1974; 14(2): 384–391.
PMCID: PMC355524

DNA of a Human Hepatitis B Virus Candidate


Particles containing DNA polymerase (Dane particles) were purified from the plasma of chronic carriers of hepatitis B antigen. After a DNA polymerase reaction with purified Dane particle preparations treated with Nonidet P-40 detergent, Dane particle core structures containing radioactive DNA product were isolated by sedimentation in a sucrose density gradient. The radioactive DNA was extracted with sodium dodecyl sulfate and isolated by band sedimentation in a preformed CsCl gradient. Examination of the radioactive DNA band by electron microscopy revealed exclusively circular double-stranded DNA molecules approximately 0.78 μm in length. Identical circular molecules were observed when DNA was isolated by a similar procedure from particles that had not undergone a DNA polymerase reaction. The molecules were completely degraded by DNase 1. When Dane particle core structures were treated with DNase 1 before DNA extraction, only 0.78-μm circular DNA molecules were detected. Without DNase treatment of core structures, linear molecules with lengths between 0.5 and 12 μm, in addition to the 0.78-μm circles were found. These results suggest that the 0.78-μm circular molecules were in a protected position within Dane particle cores and the linear molecules were not within core structures. Length measurements on 225 circular molecules revealed a mean length of 0.78 ± 0.09 μm which would correspond to a molecular weight of around 1.6 × 106. The circular molecules probably serve as primer-template for the DNA polymerase reaction carried out by Dane particle cores. Thermal denaturation and buoyant density measurements on the Dane particle DNA polymerase reaction product revealed a guanosine plus cytosine content of 48 to 49%.

Full text

Full text is available as a scanned copy of the original print version. Get a printable copy (PDF file) of the complete article (1.7M), or click on a page image below to browse page by page. Links to PubMed are also available for Selected References.

Images in this article

Click on the image to see a larger version.

Selected References

These references are in PubMed. This may not be the complete list of references from this article.
  • Almeida JD. Electron microscopic observations and speculations on Australia antigen. Postgrad Med J. 1971 Jul;47(549):484–487. [PMC free article] [PubMed]
  • Bayer ME, Blumberg BS, Werner B. Particles associated with Australia antigen in the sera of patients with leukaemia, Down's Syndrome and hepatitis. Nature. 1968 Jun 15;218(5146):1057–1059. [PubMed]
  • Clayton DA, Davis RW, Vinograd J. Homology and structural relationships between the dimeric and monomeric circular forms of mitochondrial DNA from human leukemic leukocytes. J Mol Biol. 1970 Jan 28;47(2):137–153. [PubMed]
  • CRAWFORD LV, BLACK PH. THE NUCLEIC ACID OF SIMIAN VIRUS 40. Virology. 1964 Nov;24:388–392. [PubMed]
  • Dane DS, Cameron CH, Briggs M. Virus-like particles in serum of patients with Australia-antigen-associated hepatitis. Lancet. 1970 Apr 4;1(7649):695–698. [PubMed]
  • Espejo RT, Canelo ES, Sinsheimer RL. DNA of bacteriophage PM2: a closed circular double-stranded molecule. Proc Natl Acad Sci U S A. 1969 Aug;63(4):1164–1168. [PMC free article] [PubMed]
  • Robinson WS, Greenman RL. DNA polymerase in the core of the human hepatitis B virus candidate. J Virol. 1974 Jun;13(6):1231–1236. [PMC free article] [PubMed]
  • Hoggan MD, Blacklow NR, Rowe WP. Studies of small DNA viruses found in various adenovirus preparations: physical, biological, and immunological characteristics. Proc Natl Acad Sci U S A. 1966 Jun;55(6):1467–1474. [PMC free article] [PubMed]
  • Hudson B, Clayton DA, Vinograd J. Complex mitochondrial DNA. Cold Spring Harb Symp Quant Biol. 1968;33:435–442. [PubMed]
  • Kamm RC, Smith AG. Nucleic acid concentrations in normal human plasma. Clin Chem. 1972 Jun;18(6):519–522. [PubMed]
  • Kaplan PM, Greenman RL, Gerin JL, Purcell RH, Robinson WS. DNA polymerase associated with human hepatitis B antigen. J Virol. 1973 Nov;12(5):995–1005. [PMC free article] [PubMed]
  • MARMUR J, DOTY P. Determination of the base composition of deoxyribonucleic acid from its thermal denaturation temperature. J Mol Biol. 1962 Jul;5:109–118. [PubMed]
  • Robinson WS, Robinson HL. DNA polymerase in defective Rous sarcoma virus. Virology. 1971 May;44(2):457–462. [PubMed]
  • SUEOKA N, MARMUR J, DOTY P., 2nd Dependence of the density of deoxyribonucleic acids on guanine-cytosine content. Nature. 1959 May 23;183(4673):1429–1431. [PubMed]
  • Tai HT, Smith CA, Sharp PA, Vinograd J. Sequence heterogeneity in closed simian virus 40 deoxyribonucleic acid. J Virol. 1972 Feb;9(2):317–325. [PMC free article] [PubMed]
  • Vogt VM. Purification and further properties of single-strand-specific nuclease from Aspergillus oryzae. Eur J Biochem. 1973 Feb 15;33(1):192–200. [PubMed]

Articles from Journal of Virology are provided here courtesy of American Society for Microbiology (ASM)


Related citations in PubMed

See reviews...See all...

Cited by other articles in PMC

See all...


  • Compound
    PubChem Compound links
  • MedGen
    Related information in MedGen
  • PubMed
    PubMed citations for these articles
  • Substance
    PubChem Substance links

Recent Activity

Your browsing activity is empty.

Activity recording is turned off.

Turn recording back on

See more...