The genome of parvovirus B19 is a 5600-base-long single-stranded DNA molecule with peculiar sequence symmetries. Both complementary forms of this single-stranded DNA are contained in distinct virions and they hybridize intermolecularly to double-stranded DNA if extracted from the capsids with traditional methods, thus losing some of their native structural features. A scanning force microscopy analysis of these double-stranded DNA molecules after thermal denaturation and renaturation gave us the chance to study the possible states that this DNA can assume in both its single-stranded and double-stranded forms. A novel but still poorly reproducible in situ lysis experiment that we have conducted on single virions with the scanning force microscope made it possible to image the totally unpaired state that the single-stranded DNA molecule most likely assumes inside the viral particle. Structural considerations on single molecules offer the opportunity for the formulation of plausible hypotheses on the interaction between the DNA and the viral structural proteins that could prove important for the DNA packaging in the capsid and, possibly, the viral infection mechanisms. © WILEY-VCH-Verlag GmbH, D-69451 Weinheim, 2001.

Giampaolo Zuccheri, A.B. (2001). Scanning force microscopy study on a single-stranded DNA: The genome of parvovirus B19. CHEMBIOCHEM, 2(3), 199-204 [10.1002/1439-7633(20010302)2:3<199::AID-CBIC199>3.0.CO;2-8].

Scanning force microscopy study on a single-stranded DNA: The genome of parvovirus B19

Giampaolo Zuccheri
Primo
Investigation
;
Anna Bergia
Secondo
Investigation
;
Giorgio Gallinella
Investigation
;
Monica Musiani
Supervision
;
2001

Abstract

The genome of parvovirus B19 is a 5600-base-long single-stranded DNA molecule with peculiar sequence symmetries. Both complementary forms of this single-stranded DNA are contained in distinct virions and they hybridize intermolecularly to double-stranded DNA if extracted from the capsids with traditional methods, thus losing some of their native structural features. A scanning force microscopy analysis of these double-stranded DNA molecules after thermal denaturation and renaturation gave us the chance to study the possible states that this DNA can assume in both its single-stranded and double-stranded forms. A novel but still poorly reproducible in situ lysis experiment that we have conducted on single virions with the scanning force microscope made it possible to image the totally unpaired state that the single-stranded DNA molecule most likely assumes inside the viral particle. Structural considerations on single molecules offer the opportunity for the formulation of plausible hypotheses on the interaction between the DNA and the viral structural proteins that could prove important for the DNA packaging in the capsid and, possibly, the viral infection mechanisms. © WILEY-VCH-Verlag GmbH, D-69451 Weinheim, 2001.
2001
Giampaolo Zuccheri, A.B. (2001). Scanning force microscopy study on a single-stranded DNA: The genome of parvovirus B19. CHEMBIOCHEM, 2(3), 199-204 [10.1002/1439-7633(20010302)2:3<199::AID-CBIC199>3.0.CO;2-8].
Giampaolo Zuccheri, Anna Bergia, Giorgio Gallinella, Monica Musiani, Bruno Samorì
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/906831
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