University of California - San Francisco May 8 2026 Bacteria fend off invading viruses with molecular scissors that slice up viral DNA - a system called CRISPR that's become indispensable to gene editing.  But viruses can fight back with a molecular trick that stops the scissors from ever being made. Writing in  Nature , scientists at UC San Francisco describe how a viral "anti-CRISPR" protein sits on the bacteria's protein assembly line - which is known as a ribosome - and jams it as a CRISPR

Tag-uri: DNA