3v06 | pdb_00003v06

Crystal structure of S-6'-Me-3'-fluoro hexitol nucleic acid

spinqualitylabelsall models 3v06, resolution 1.53Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3v06 is a 2 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: SR NonStd Res: F5H Related: 3v07 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed Locked nucleic acid (LNA) analogues with 2',4'-bridged sugars show promise in antisense applications. S-5'-Me-LNA has high RNA affinity, and modified oligonucleotides show weakened immune stimulation in vivo. Conversely, an R-5'-methyl group dramatically lowers RNA affinity. To test the effects of S- and R-6'-methyl groups on 3'-fluoro hexitol nucleic acid (FHNA) stability, we synthesized S- and R-6'-Me-FHNA thymidine and incorporated them into oligo-2'-deoxynucleotides. As with LNA, S-6'-Me is stabilizing whereas R-6'-Me is destabilizing. Crystal structures of 6'-Me-FHNA-modified DNAs explain the divergent consequences for stability and suggest convergent origins of these effects by S- and R-6'-Me (FHNA) [-5'-Me (LNA and RNA)] substituents. Insights from crystal structures into the opposite effects on RNA affinity caused by the s- and R-6'-methyl backbone modifications of 3'-fluoro hexitol nucleic Acid.,Pallan PS, Yu J, Allerson CR, Swayze EE, Seth P, Egli M Biochemistry. 2012 Jan 10;51(1):7-9. Epub 2011 Dec 29. PMID:22229409 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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