Bacterial defense system builds DNA in unexpected new way to stop viruses
Scientists at Stanford University have discovered that DRT3, a unique defense system found in bacteria, creates DNA to protect against viral infections. DRT3 is made up of two different enzymes called reverse transcriptases, Drt3a and Drt3b, and a piece of noncoding RNA (ncRNA). Together, this trio makes long, double-stranded DNA consisting of alternating repeats (GT/AC).
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