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-Structure paper
タイトル | Revealing the structures of megadalton-scale DNA complexes with nucleotide resolution. |
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ジャーナル・号・ページ | Nat Commun, Vol. 11, Issue 1, Page 6229, Year 2020 |
掲載日 | 2020年12月4日 |
著者 | Massimo Kube / Fabian Kohler / Elija Feigl / Baki Nagel-Yüksel / Elena M Willner / Jonas J Funke / Thomas Gerling / Pierre Stömmer / Maximilian N Honemann / Thomas G Martin / Sjors H W Scheres / Hendrik Dietz / |
PubMed 要旨 | The methods of DNA nanotechnology enable the rational design of custom shapes that self-assemble in solution from sets of DNA molecules. DNA origami, in which a long template DNA single strand is ...The methods of DNA nanotechnology enable the rational design of custom shapes that self-assemble in solution from sets of DNA molecules. DNA origami, in which a long template DNA single strand is folded by many short DNA oligonucleotides, can be employed to make objects comprising hundreds of unique DNA strands and thousands of base pairs, thus in principle providing many degrees of freedom for modelling complex objects of defined 3D shapes and sizes. Here, we address the problem of accurate structural validation of DNA objects in solution with cryo-EM based methodologies. By taking into account structural fluctuations, we can determine structures with improved detail compared to previous work. To interpret the experimental cryo-EM maps, we present molecular-dynamics-based methods for building pseudo-atomic models in a semi-automated fashion. Among other features, our data allows discerning details such as helical grooves, single-strand versus double-strand crossovers, backbone phosphate positions, and single-strand breaks. Obtaining this higher level of detail is a step forward that now allows designers to inspect and refine their designs with base-pair level interventions. |
リンク | Nat Commun / PubMed:33277481 / PubMed Central |
手法 | EM (単粒子) |
解像度 | 7.4 - 28.0 Å |
構造データ | EMDB-10993: EMDB-11159: EMDB-11168: EMDB-11170, PDB-7as5: EMDB-11294: EMDB-11295: EMDB-11296: EMDB-11297: EMDB-11298: EMDB-11343: EMDB-11344: EMDB-11345: EMDB-11346: EMDB-11348: EMDB-11349: EMDB-11350: EMDB-11351: EMDB-11352: EMDB-11353: EMDB-11354: EMDB-11355: EMDB-11367: 16 helix bundle EMDB-11378: Twist-Tower_twist-corrected EMDB-11379, PDB-7arv: EMDB-11387, PDB-7art: EMDB-11881, PDB-7are: |
由来 |
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キーワード | DNA / DNA Origami |