Scientists now reveal how viruses disable bacterial immune systems. For many bacteria, one line of defense against viral infection is a sophisticated RNA-guided “immune system” called CRISPR-Cas. At the center of this system is a surveillance complex that recognizes viral DNA and triggers its destruction. However, viruses can strike back and disable this surveillance complex using “anti-CRISPR” proteins, though no one has figured out exactly how these anti-CRISPRs work – until now.
from Top Health News – ScienceDaily http://ift.tt/2nuYhEa
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