[link to www.sciencealert.com (secure)]

snip~

Earlier this year, scientists identified the existence of a brand new DNA structure never before seen in living cells. That's right, it's not just the double helix.

The discovery of what's described as a 'twisted knot' of DNA in living cells confirms our complex genetic code is crafted with more intricate symmetry than just the double helix structure everybody associates with DNA. Importantly, the forms these molecular variants take affect how our biology functions.

"When most of us think of DNA, we think of the double helix," said antibody therapeutics researcher Daniel Christ from the Garvan Institute of Medical Research in Australia back in April when the discovery was made.

"This new research reminds us that totally different DNA structures exist – and could well be important for our cells."

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