Scientists discover DNA knot keeps viral genes tightly corked inside shell

A novel twist of DNA may keep viral genes tightly wound within a capsule, waiting for ejection into a host, a high-resolution analysis of its structure has revealed.

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<p><a href="http://www.physorg.com/news132930475.html">Scientists discover DNA knot keeps viral genes tightly corked inside shell</a></p> <p>A novel twist of DNA may keep viral genes tightly wound within a capsule, waiting for ejection into a host, a high-resolution analysis of its structure has revealed.</p>