8DAH

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

Summary for 8DAH

• Entry DOI: 10.2210/pdb8dah/pdb
• Descriptor: DNA (5'-D(*GP*GP*CP*AP*GP*CP*CP*TP*GP*TP*AP*CP*GP*GP*AP*CP*AP*TP*CP*A)-3'), DNA (5'-D(P*CP*CP*GP*TP*AP*CP*A)-3'), DNA (5'-D(P*GP*GP*CP*TP*GP*C)-3'), ... (4 entities in total)
• Functional Keywords: tensegrity triangle, synthetic construct, self-assembly, dna
• Biological source: synthetic construct; More
• Total number of polymer chains: 4
• Total formula weight: 12180.02

Authors

Lu, B.,Vecchioni, S.,Ohayon, Y.P.,Seeman, N.C.,Mao, C.,Sha, R. (deposition date: 2022-06-13, release date: 2023-01-18, Last modification date: 2023-10-25)

Primary citation

Lu, B.,Woloszyn, K.,Ohayon, Y.P.,Yang, B.,Zhang, C.,Mao, C.,Seeman, N.C.,Vecchioni, S.,Sha, R.
Programmable 3D Hexagonal Geometry of DNA Tensegrity Triangles.
Angew.Chem.Int.Ed.Engl., 62:e202213451-e202213451, 2023

PubMed Abstract: 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 vice versa. 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.

PubMed: 36520622
DOI: 10.1002/anie.202213451

Experimental method

X-RAY DIFFRACTION (5.47 Å)