Acyclic L-threoninol nucleic acid (L-aTNA) with suitable structural rigidity cross-pairs with DNA and RNA.

We report the hybridization properties of a novel artificial nucleic acid: acyclic L-threoninol nucleic acid (L-aTNA). L-aTNA formed a more stable duplex with DNA and RNA than either D-aTNA or serinol nucleic acid (SNA) as the rigidity of the L-form was more optimal for interaction with natural nucleic acids.