Patent ID: 8017742

Claim:
An isolated nucleic acid-polymer complex composed of a bonded nucleic acid and a hydrogen bonding polymer having a polymer chain comprising a naturally occurring β-1,3-glucan with hydrogen-bonding sites on the polymer chain, said hydrogen bonding sites being formed on said polymer chain by unbinding a β-1,3-glucan to form a single stranded β-1,3-glucan capable of forming a complex with a single stranded nucleic acid, said single stranded nucleic acid comprising a poly(dA), poly(A), or poly(C) nucleic acid and, when being combined with the single stranded β-1,3-glucan, said poly(dA), poly(A), or poly(C) nucleic acid being a helical compound, and said polymer chain, when in aqueous solution, having helix parameters similar to the helix parameters of the poly(dA), poly(A), or poly(C) of the single stranded nucleic acid, the similar helix parameters including an h/R value in a range of 2 to 4 Å, wherein the bonded nucleic acid is bonded to the hydrogen bonding polymer through the hydrogen-bonding sites.