alexa A DNA aptamer which binds to and inhibits thrombin exhibits a new structural motif for DNA.
Materials Science

Materials Science

Journal of Nanomedicine & Nanotechnology

Author(s): Wang KY, McCurdy S, Shea RG, Swaminathan S, Bolton PH

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Abstract The investigation of the three-dimensional structure of the DNA aptamer d(G1G2T3-T4G5G6T7G8T9G10G11T12T13G14G15) which binds to and inhibits thrombin has been carried out by NMR methods. This DNA exhibits a number of long-range NOEs between residues which are not adjacent in sequence, which allowed the determination of the novel tertiary structure adopted. This DNA adopts a highly compact, highly symmetrical structure which consists of two tetrads of guanosine base pairs and three loops. The residues of the tetrads alternate anti-syn-anti-syn. This novel structural motif for DNA may also be relevant to the structure of telomere DNA.
This article was published in Biochemistry and referenced in Journal of Nanomedicine & Nanotechnology

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