Activity of the VP16 gene (light blue) and the presence of other viral proteins (light purple) in these mouse nerve cells are signs of the herpes virus waking from its latent form. The cells appear dark purple where both markers overlap. Credit: N. SawtellFrom Science News:
Researchers identify key protein that reactivates virus under stress.
A single viral protein enables dormant herpes virus to wake up, suggests a study appearing online March 26 in PLoS Pathogens. The protein, called VP16, acts as the gatekeeper for the damaging, infective activity of the virus, new results in mice show.
Figuring out what causes an inactive, latent state to become a highly infectious state is “very, very important for understanding this virus,” says study coauthor Nancy Sawtell of Cincinnati Children’s Hospital Medical Center in Ohio. The results may lead to a better way to control herpes simplex virus type 1, a virus carried by more than 70 percent of the human population, Sawtell says.
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