8dah

[20 bp edge] Self-Assembled 3D DNA Hexagonal Tensegrity Triangle

spinqualitylabelsall models 8dah, resolution 5.47Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 8dah is a 4 chain structure with sequence from Synthetic construct. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 5.47Å Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed <p class="Text" style="margin: 0in 0in 8pt; text-align: justify; line-height: 24px; font-size: 12pt; font-family: "Times New Roman", serif; color: rgb(0, 0, 0);">Non-canonical interactions in DNA remain under-explored in DNA nanotechnology. Recently, many structures with non-canonical motifs have been discovered, notably a hexagonal arrangement of typically rhombohedral DNA tensegrity triangles that forms through non-canonical sticky end interactions. Here, we find a series of mechanisms to program a hexagonal arrangement using: the sticky end sequence; triangle edge torsional stress; and crystallization condition. We showcase cross-talking between Watson-Crick and non-canonical sticky ends in which the ratio between the two dictates segregation by crystal forms or combination into composite crystals. Finally, we develop a method for reconfiguring the long-range geometry of formed crystals from rhombohedral to hexagonal and <italic>vice versa</italic>. These data demonstrate fine control over non-canonical motifs and their topological self-assembly. This will vastly increase the programmability, functionality, and versatility of rationally designed DNA constructs.<o:p></o:p></p>. Programmable 3D Hexagonal Geometry of DNA Tensegrity Triangles.,Lu B, Woloszyn K, Ohayon YP, Yang B, Zhang C, Mao C, Seeman NC, Vecchioni S, Sha R Angew Chem Int Ed Engl. 2022 Dec 15. doi: 10.1002/anie.202213451. PMID:36520622 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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