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Structure paper

TitleRevealing the structures of megadalton-scale DNA complexes with nucleotide resolution.
Journal, issue, pagesNat Commun, Vol. 11, Issue 1, Page 6229, Year 2020
Publish dateDec 4, 2020
AuthorsMassimo 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 AbstractThe 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.
External linksNat Commun / PubMed:33277481 / PubMed Central
MethodsEM (single particle)
Resolution7.4 - 28.0 Å
Structure data

EMDB-10993:
42 Helix Bundle with aligned Staple Breaks after UV Illumination
Method: EM (single particle) / Resolution: 20.0 Å

EMDB-11159:
Dumbbell_1
Method: EM (single particle) / Resolution: 21.0 Å

EMDB-11168:
Dumbbell_2
Method: EM (single particle) / Resolution: 17.0 Å

EMDB-11170, PDB-7as5:
126 helix bundle DNA nanostructure
Method: EM (single particle) / Resolution: 9.8 Å

EMDB-11294:
42hb with aligned staple breaks
Method: EM (single particle) / Resolution: 17.5 Å

EMDB-11295:
42hb with aligned staple breaks and 1T at staple termini
Method: EM (single particle) / Resolution: 19.0 Å

EMDB-11296:
42hb with aligned staple breaks and 1T at staple termini after UV illumination
Method: EM (single particle) / Resolution: 20.0 Å

EMDB-11297:
42hb with reduced staple density
Method: EM (single particle) / Resolution: 19.0 Å

EMDB-11298:
42hb with reduced staple density after UV illumination
Method: EM (single particle) / Resolution: 17.0 Å

EMDB-11343:
48hb brick with 1T at staple crossovers
Method: EM (single particle) / Resolution: 13.0 Å

EMDB-11344:
48hb brick with 2T at staple crossovers
Method: EM (single particle) / Resolution: 15.0 Å

EMDB-11345:
48hb brick with 4T at staple crossovers
Method: EM (single particle) / Resolution: 26.0 Å

EMDB-11346:
hinged beam object v1
Method: EM (single particle) / Resolution: 26.0 Å

EMDB-11348:
hinged beam object v2
Method: EM (single particle) / Resolution: 19.0 Å

EMDB-11349:
hinged beam like object v3
Method: EM (single particle) / Resolution: 26.0 Å

EMDB-11350:
hinged beam like object v4
Method: EM (single particle) / Resolution: 17.0 Å

EMDB-11351:
six helix tube v1
Method: EM (single particle) / Resolution: 17.0 Å

EMDB-11352:
six helix tube v2
Method: EM (single particle) / Resolution: 18.0 Å

EMDB-11353:
six helix tube v3
Method: EM (single particle) / Resolution: 19.0 Å

EMDB-11354:
six helix tube v4
Method: EM (single particle) / Resolution: 25.0 Å

EMDB-11355:
10 helix bundle
Method: EM (single particle) / Resolution: 28.0 Å

EMDB-11367: 16 helix bundle
PDB-7arq: Cryo EM of 3D DNA origami 16 helix bundle
Method: EM (single particle) / Resolution: 10.0 Å

EMDB-11378: Twist-Tower_twist-corrected
PDB-7ary: Twist-Tower_twist-corrected-variant
Method: EM (single particle) / Resolution: 8.5 Å

EMDB-11379, PDB-7arv:
TwistTower_native-twist
Method: EM (single particle) / Resolution: 7.4 Å

EMDB-11387, PDB-7art:
48 helix bundle DNA origami brick
Method: EM (single particle) / Resolution: 9.9 Å

EMDB-11881, PDB-7are:
DNA origami pointer object v2
Method: EM (single particle) / Resolution: 7.4 Å

Source
  • synthetic construct (others)
  • Escherichia virus M13
KeywordsDNA / DNA Origami

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