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© Research
Publication : The Journal of general virology

Phospholipids act as secondary receptor during the entry of the enveloped, double-stranded RNA bacteriophage phi6

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in The Journal of general virology - 28 Apr 2010

Cvirkaite-Krupovic V, Poranen MM, Bamford DH

Link to Pubmed [PMID] – 20427561

J. Gen. Virol. 2010 Aug;91(Pt 8):2116-20

Bacteriophage phi6 is the type member of the family Cystoviridae and infects Gram-negative Pseudomonas syringae cells. The virion consists of a protein-rich lipid envelope enclosing a nucleocapsid. The nucleocapsid covers the icosahedral polymerase complex that encloses the double-stranded RNA genome. Here, we demonstrate that nucleocapsid surface protein P8 is the single nucleocapsid component interacting with the cytoplasmic membrane. This interaction takes place between P8 and phospholipid. Based on this and previous studies, we propose a model where the periplasmic nucleocapsid interacts with the phospholipid head groups and, when the membrane voltage exceeds the threshold of 110 mV, this interaction drives the nucleocapsid through the cytoplasmic membrane, resulting in an intracellular vesicle containing the nucleocapsid.

http://www.ncbi.nlm.nih.gov/pubmed/20427561