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Biophysics of viral infectivity: matching genome length with capsid size

  • Elmar Nurmemmedov (a1), Martin Castelnovo (a2), Carlos Enrique Catalano (a3) and Alex Evilevitch (a1)

In this review, we discuss recent advances in biophysical virology, presenting experimental and theoretical studies on the physical properties of viruses. We focus on the double-stranded (ds) DNA bacteriophages as model systems for all of the dsDNA viruses both prokaryotic and eukaryotic. Recent studies demonstrate that the DNA packaged into a viral capsid is highly pressurized, which provides a force for the first step of passive injection of viral DNA into a bacterial cell. Moreover, specific studies on capsid strength show a strong correlation between genome length, and capsid size and robustness. The implications of these newly appreciated physical properties of a viral particle with respect to the infection process are discussed.

Corresponding author
*Author for correspondence: Dr A. Evilevitch, Department of Biochemistry, Center for Chemistry and Chemical Engineering, Lund University, Box 124, S-221 00, Lund, Sweden.  Tel.: +46 46 222 3291; Fax: +46 46 222 4116; Email:
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Quarterly Reviews of Biophysics
  • ISSN: 0033-5835
  • EISSN: 1469-8994
  • URL: /core/journals/quarterly-reviews-of-biophysics
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