Intraduplex interactions involving the 20th residues in the DD1a (), DD1b () and DD2 () DNA:DNA duplexes, and the 5th residues in the DR2a (), DR2b () and DR2c () DNA:RNA duplexes

<p><b>Copyright information:</b></p><p>Taken from "Crystal structures of DNA:DNA and DNA:RNA duplexes containing 5-(-aminohexyl)carbamoyl-modified uracils reveal the basis for properties as antigene and antisense molecules"</p><p></p><p>Nucleic Acids Research 2007;35(6):1969-1977.</p><p>Published online 6 Mar 2007</p><p>PMCID:PMC1874594.</p><p>© The Author 2006. Published by Oxford University Press. All rights reserved</p> The carbon atoms in the aminohexyl, carbamoyl and methoxyl modifications are colored green, and the water molecules are colored pale blue. Broken and dotted lines indicate possible hydrogen bonds and van der Waals interactions, respectively. The values indicated are in angstroms (Å)