470d | pdb_0000470d

CRYSTAL STRUCTURE AND IMPROVED ANTISENSE PROPERTIES OF 2'-O-(2-METHOXYETHYL)-RNA

spinqualitylabelsall models 470d, resolution 1.95Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 470d is a 2 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: MG NonStd Res: A44, C43, G48, U36 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed 2'-O-(2-Methoxyethyl)-RNA (MOE-RNA) is a nucleic acid analog with promising features for antisense applications. Compared with phosphorothioate DNA (PS-DNA), the MOE modification offers improved nuclease resistance, enhanced RNA affinity, improved cellular uptake and intestinal absorption, reduced toxicity and immune stimulation. The crystal structure of a fully modified MOE-RNA dodecamer duplex (CGCGAAUUCGCG) was determined at 1.7 A resolution. In the majority of the MOE substituents, the torsion angle around the ethylene alkyl chain assumes a gauche conformation. The conformational preorganization of the MOE groups is consistent with the improved RNA affinity and the extensive hydration of the substituents could play a role in the improved cellular uptake of MOE-RNA. A specific hydration pattern that bridges substituent and phosphate oxygen atoms in the minor groove of MOE-RNA may explain its high nuclease resistance. Crystal structure and improved antisense properties of 2'-O-(2-methoxyethyl)-RNA.,Teplova M, Minasov G, Tereshko V, Inamati GB, Cook PD, Manoharan M, Egli M Nat Struct Biol. 1999 Jun;6(6):535-9. PMID:10360355 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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