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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-3411 | |||||||||
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Title | cryo-EM of nanoscale DNA assemblies | |||||||||
![]() | Reconstruction of a DNA cuboctahedron object | |||||||||
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![]() | Scaffolded DNA origami | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 29.0 Å | |||||||||
![]() | Zhang K / Chiu W / Veneziano R / Ratanalert S / Zhang F / Yan H / Bathe M | |||||||||
![]() | ![]() Title: Designer nanoscale DNA assemblies programmed from the top down. Authors: Rémi Veneziano / Sakul Ratanalert / Kaiming Zhang / Fei Zhang / Hao Yan / Wah Chiu / Mark Bathe / ![]() Abstract: Scaffolded DNA origami is a versatile means of synthesizing complex molecular architectures. However, the approach is limited by the need to forward-design specific Watson-Crick base pairing manually ...Scaffolded DNA origami is a versatile means of synthesizing complex molecular architectures. However, the approach is limited by the need to forward-design specific Watson-Crick base pairing manually for any given target structure. Here, we report a general, top-down strategy to design nearly arbitrary DNA architectures autonomously based only on target shape. Objects are represented as closed surfaces rendered as polyhedral networks of parallel DNA duplexes, which enables complete DNA scaffold routing with a spanning tree algorithm. The asymmetric polymerase chain reaction is applied to produce stable, monodisperse assemblies with custom scaffold length and sequence that are verified structurally in three dimensions to be high fidelity by single-particle cryo-electron microscopy. Their long-term stability in serum and low-salt buffer confirms their utility for biological as well as nonbiological applications. | |||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 54.3 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 15.7 KB 15.7 KB | Display Display | ![]() |
Images | ![]() | 170 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Annotation | Reconstruction of a DNA cuboctahedron object | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 2.51 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
-Entire : DNA cuboctahedron, 52-bp edge length
Entire | Name: DNA cuboctahedron, 52-bp edge length |
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Components |
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-Supramolecule #1000: DNA cuboctahedron, 52-bp edge length
Supramolecule | Name: DNA cuboctahedron, 52-bp edge length / type: sample / ID: 1000 Details: Monodisperse and pure sample were prepared by overnight folding reaction and purified using centrifugal filter (MWCO 100KDa) Oligomeric state: monomer / Number unique components: 2 |
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Molecular weight | Experimental: 1.85 MDa / Theoretical: 1.85 MDa / Method: Calculation |
-Macromolecule #1: M13mp18 phage genome segment
Macromolecule | Name: M13mp18 phage genome segment / type: dna / ID: 1 / Name.synonym: Scaffold strand / Details: amplified using assymetric PCR / Classification: DNA / Structure: SINGLE STRANDED / Synthetic?: No |
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Source (natural) | Organism: ![]() |
Molecular weight | Experimental: 1.01 MDa / Theoretical: 1.01 MDa |
Sequence | String: TCTTTGCCTT GCCTGTATGA TTTATTGGAT GTTAATGCTA CTACTATTAG TAGAATTGAT GCCACCTTTT CAGCTCGCGC CCCAAATGAA AATATAGCTA AACAGGTTAT TGACCATTTG CGAAATGTAT CTAATGGTCA AACTAAATCT ACTCGTTCGC AGAATTGGGA ...String: TCTTTGCCTT GCCTGTATGA TTTATTGGAT GTTAATGCTA CTACTATTAG TAGAATTGAT GCCACCTTTT CAGCTCGCGC CCCAAATGAA AATATAGCTA AACAGGTTAT TGACCATTTG CGAAATGTAT CTAATGGTCA AACTAAATCT ACTCGTTCGC AGAATTGGGA ATCAACTGTT ACATGGAATG AAACTTCCAG ACACCGTACT TTAGTTGCAT ATTTAAAACA TGTTGAGCTA CAGCACCAGA TTCAGCAATT AAGCTCTAAG CCATCCGCAA AAATGACCTC TTATCAAAAG GAGCAATTAA AGGTACTCTC TAATCCTGAC CTGTTGGAGT TTGCTTCCGG TCTGGTTCGC TTTGAAGCTC GAATTAAAAC GCGATATTTG AAGTCTTTCG GGCTTCCTCT TAATCTTTTT GATGCAATCC GCTTTGCTTC TGACTATAAT AGTCAGGGTA AAGACCTGAT TTTTGATTTA TGGTCATTCT CGTTTTCTGA ACTGTTTAAA GCATTTGAGG GGGATTCAAT GAATATTTAT GACGATTCCG CAGTATTGGA CGCTATCCAG TCTAAACATT TTACTATTAC CCCCTCTGGC AAAACTTCTT TTGCAAAAGC CTCTCGCTAT TTTGGTTTTT ATCGTCGTCT GGTAAACGAG GGTTATGATA GTGTTGCTCT TACTATGCCT CGTAATTCCT TTTGGCGTTA TGTATCTGCA TTAGTTGAAT GTGGTATTCC TAAATCTCAA CTGATGAATC TTTCTACCTG TAATAATGTT GTTCCGTTAG TTCGTTTTAT TAACGTAGAT TTTTCTTCCC AACGTCCTGA CTGGTATAAT GAGCCAGTTC TTAAAATCGC ATAAGGTAAT TCACAATGAT TAAAGTTGAA ATTAAACCAT CTCAAGCCCA ATTTACTACT CGTTCTGGTG TTCTCGTCAG GGCAAGCCTT ATTCACTGAA TGAGCAGCTT TGTTACGTTG ATTTGGGTAA TGAATATCCG GTTCTTGTCA AGATTACTCT TGATGAAGGT CAGCCAGCCT ATGCGCCTGG TCTGTACACC GTTCATCTGT CCTCTTTCAA AGTTGGTCAG TTCGGTTCCC TTATGATTGA CCGTCTGCGC CTCGTTCCGG CTAAGTAACA TGGAGCAGGT CGCGGATTTC GACACAATTT ATCAGGCGAT GATACAAATC TCCGTTGTAC TTTGTTTCGC GCTTGGTATA ATCGCTGGGG GTCAAAGATG AGTGTTTTAG TGTATTCTTT CGCCTCTTTC GTTTTAGGTT GGTGCCTTCG TAGTGGCATT ACGTATTTTA CCCGTTTAAT GGAAACTTCC TCATGAAAAA GTCTTTAGTC CTCAAAGCCT CTGTAGCCGT TGCTACCCTC GTTCCGATGC TGTCTTTCGC TGCTGAGGGT GACGATCCCG CAAAAGCGGC CTTTAACTCC CTGCAAGCCT CAGCGACCGA ATATATCGGT TATGCGTGGG CGATGGTTGT TGTCATTGTC GGCGCAACTA TCGGTATCAA GCTGTTTAAG AAATTCACCT CGAAAGCAAG CTGATAAACC GATACAATTA AAGGCTCCTT TTGGAGCCTT TTTTTTTGGA GATTTTCAAC GTGAAAAAAT TATTATTCGC AATTCCTTTA GTTGTTCCTT TCTATTCTCA CTCCGCTGAA ACTGTTGAAA GTTGTTTAGC AAAACCCCAT ACAGAAAATT CATTTACTAA CGTCTGGAAA GACGACAAAA CTTTAGATCG TTACGCTAAC TATGAGGGTT GTCTGTGGAA TGCTACAGGC GTTGTAGTTT GTACTGGTGA CGAAACTCAG TGTTACGGTA CATGGGTTCC TATTGGGCTT GCTATCCCTG AAAATGAGGG TGGTGGCTCT GAGGGTGGCG GTTCTGAGGG TGGCGGTTCT GAGGGTGGCG GTACTAAACC TCCTGAGTAC GGTGATACAC CTATTCCGGG CTATACTTAT ATCAACCCTC TCGACGGCAC TTATCCGCCT GGTACTGAGC AAAACCCCGC TAATCCTAAT CCTTCTCTTG AGGAGTCTCA GCCTCTTAAT ACTTTCATGT TTCAGAATAA TAGGTTCCGA AATAGGCAGG GGGCATTAAC TGTTTATACG GGCACTGTTA CTCAAGGCAC TGACCCCGTT AAAACTTATT ACCAGTACAC TCCTGTATCA TCAAAAGCCA TGTATGACGC TTACTGGAAC GGTAAATTCA GAGACTGCGC TTTCCATTCT GGCTTTAATG AAGATCCATT CGTTTGTGAA TATCAAGGCC AATCGTCTGA CCTGCCTCAA CCTCCTGTCA ATGCTGGCGG CGGCTCTGGT GGTGGTTCTG GTGGCGGCTC TGAGGGTGGT GGCTCTGAGG GTGGCGGTTC TGAGGGTGGC GGCTCTGAGG GAGGCGGTTC CGGTGGTGGC TCTGGTTCCG GTGATTTTGA TTATGAAAAG ATGGCAAACG CTAATAAGGG GGCTATGACC GAAAATGCCG ATGAAAACGC GCTACAGTCT GACGCTAAAG GCAAACTTGA TTCTGTCGCT ACTGATTACG GTGCTGCTAT CGATGGTTTC ATTGGTGACG TTTCCGGCCT TGCTAATGGT AATGGTGCTA CTGGTGATTT TGCTGGCTCT AATTCCCAAA TGGCTCAAGT CGGTGACGGT GATAATTCAC CTTTAATGAA TAATTTCCGT CAATATTTAC CTTCCCTCCC TCAATCGGTT GAATGTCGCC CTTTTGTCTT TAGCGCTGGT AAACCATATG AATTTTCTAT TGATTGTGAC AAAATAAACT TATTCCGTGG TGTCTTTGCG TTTCTTTTAT ATGTTGCCAC CTTTATGTAT GTATTTTCTA CGTTTGCTAA CATACTGCGT AATAAGGAGT CTTAATCATG CCAGTTCTTT TGGGTATTCC GTTATTATTG CGTTTCCTCG GTTTCCTTCT GGTAACTTTG TTCGGCTATC TGCTTACTTT TCTTAAAAAG GGCTTCGGTA AGATAGCTAT TGCTATTTCA TTGTTTCTTG CTCTTATTAT TGGGCTTAAC TCAATTCTTG TGGGTTATCT CTCTGATATT AGCGCTCAAT TACCCTCTGA CTTTGTTCAG GGTGTTCAGT TAATTCTCCC GTCTAATGCG CTTCCCTGTT TTTATGTTAT TCTCTCTGTA AAGGCTGCTA TTTTCATTTT TGACGTTAAA CAAAAAATCG TTTCTTATTT GGATTGGGAT AAATAATATG GCTGTTTATT TTGTAACTGG CAAATTAGGC TCTGGAAAGA CGCTCGTTAG C |
-Macromolecule #2: Synthetic DNA oligonucleotides
Macromolecule | Name: Synthetic DNA oligonucleotides / type: dna / ID: 2 / Name.synonym: Staple strand Details: CGAGCTGAAAATTTTTGGTGGCATCAGAAAGAGGCGATTTTTAAGAATACAC CGAAGGCACCTAGTAGTAGCATTCAAGTTTGTAATGCCACTA AACCTAAAACATTCTACTAA TACATTTCGCATTTTTAATGGTCAATATTTTTGCGGATTTTTTGGCTTAGAG ...Details: CGAGCTGAAAATTTTTGGTGGCATCAGAAAGAGGCGATTTTTAAGAATACAC CGAAGGCACCTAGTAGTAGCATTCAAGTTTGTAATGCCACTA AACCTAAAACATTCTACTAA TACATTTCGCATTTTTAATGGTCAATATTTTTGCGGATTTTTTGGCTTAGAG GCTCCTTTTGGCTATATTTTCATTTGGGGCGTACCTTTAATT ATAAGAGGTCAACCTGTTTA ACCAGGCGGATTTTTTAAGTGCCGTCCCATTAAACGGTTTTTGTAAAATACG TATAAGTATAGACTTTTTCATGAGGAAGTTTGAGAGGGTTGA GCCCGGAATAGAGGACTAAA ATACCAAGCGCTTTTTGAAACAAAGTCAACAGGTCAGTTTTTGATTAGAGAG TTGTATCATCAACCAGACCGGAAGCAAACTCACAACGGAGAT GCCTGATAAACTTCAAAGCG CCATTAGATGCGAACGAGTAGATTCACCGGA ACCAGAGCTTTCATAATCAAAATTAGTTTGA ACATGTTTTAATTTTTATATGCAACTGTAACAGTTGATTTTTTTCCCAATTC CTGCGGAAGTTTAGACTGGATAGCGAAGTTT CATTCCATAAAGTACGGTGTCTGGTCCAATA CCTTTAGCGTCTTTTTAGACTGTAGCAACGAATGGATTTTTTCTTCATTAAA CAGCATTGACATTTTTGGAGGTTGAGCCTTATTAGCGTTTTTTTTGCCATCT GGCATTTTCGCGATTGGCCTTGATATTCACAGCGTTTTCATC GTCATAGCCCGCAGGTCAGA TACTGGTAATGGCTTTTGATGATACACCAGA GCCGCCGCCGCCACCAGAACCACCAGGAGTG AGAAGCAAAGCTTTTTGGATTGCATCAATATCGCGTTTTTTTTTAATTCGAG AGACTTCAAAAAAGATTAAGAGGATGGTGCT GTAGCTCACTTAATTGCTGAATCAGCCCGAA ACGAGAATGACTTTTTCATAAATCAAGAACGGTGTACTTTTTAGACCAGGCG AACTTTGAAATTTACCCTGACTATTATAGTCCCGAACTGACC GAGGACAGATAAATCAGGTC TCGTCATAAATTTTTTATTCATTGAAAAAGGAATTACTTTTTGAGGCATAGT AATGCAGATAATGCTTTAAACAGTTCAGAAACACATTCAACT CATAACGCCATCCCCCTCAA TTGTGTCGAAATTTTTTCCGCGACCTAGACGGTCAATTTTTTCATAAGGGAA ACCATCGCATAGTTGCGCCGACAAGCCGGAA CGAGGCGCGCTCCATGTTACTTATGACAACA TCTTGACAAGATTTTTACCGGATATTTCAGTTGAGATTTTTTTTAGGAATAC TCAACGTAACTATTACAGGTAGAAAGATTCACATTACCCAAA AAAGCTGCTCGGAACAACAT CACCACCGGAATTTTTCCGCCTCCCTCAGAGCCACCATTTTTCCCTCAGAGC CAGACGACGATTTTTTAAAAACCAAACAGAGGGGGTATTTTTATAGTAAAAT AGTTTTGCATAGCGAGAGGCTTTTCAGAACC GCCACCCTCAGAGCCGCCACCCTGCAAAAGA CGATTTTAAGATTTTTACTGGCTCATACGTTAATAAATTTTTACGAACTAAC AAAAATCTTATACCAGTCAGGACGATAACCC TCGTTTACAAGAGCAACACTATCTTGGGAAG ATAAGTTTTAATTTTTCGGGGTCAGTATGCCCCCTGCTTTTTCTATTTCGGA AACAGTTAGCCTTGAGTAACAGTGGTGAATT ACCTTATGTCAACTTTAATCATTCCCGTATA ATTCAGTGAATTTTTTAAGGCTTGCCTGGGCTTGAGATTTTTTGGTTTAATT CAAACTACTAACACTGAGTTTCGTGAACGAG TAGTAAATCTGACGAGAACACCACACCAGTA GAGGCTGAGACTTTTTTCCTCAAGAGCCGTTCCAGTATTTTTAGCGTCATAC AAGCGCAGTCATTAGCGGGGTTTTGCTCAGTGCCAGAATGGA TCTGAATTTAAAGGATTAGG CCTCAGAACCGTTTTTCCACCCTCAGCCAATAGGAACTTTTTCCATGTACCG TAGCAAGCAGCCACCACCCTCATTACATGAA AGTATTAAACCTATTATTCTGAATTCAGGGA GGTGTATCACCTTTTTGTACTCAGGAGCTAAACAACTTTTTTTTCAACAGTT AATTTTCTGTCGCCACCCTCAGAACCGCCACGTTAGTAAATG ATGGGGTTTTGGTTTAGTAC AACGCCTGTAGTTTTTCATTCCACAGAGTTTTGTCGTTTTTTCTTTCCAGAC AAAAAGGCTTTTCACGTTGAAAATAGCGTAA CGATCTAAACAACCCTCATAGTTCTCCAAAA GCTTTTGCGGGTTTTTATCGTCACCCAGCAACGGCTATTTTTCAGAGGCTTT ACGAGGGTTCAGCAGCGAAAGACATGACCCC CAGCGATTTAAAACACTCATCTTGCATCGGA CCACGCATAACTTTTTCGATATATTCAAGGAATTGCGTTTTTAATAATAATT AGAATAGAAAGCTTGCAGGGAGTTAAAGGCCTCAGCGGAGTG GGAACAACTAGGTCGCTGAG TCCAAAAGGAGTTTTTCCTTTAATTGTTCTTAAACAGTTTTTCTTGATACCG AGGTGAATTATCGGTTTATCAGCTCTTCATC AAGAGTAACATAGGCTGGCTGACTGCTTTCG Classification: DNA / Structure: SINGLE STRANDED / Synthetic?: Yes |
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Source (natural) | Organism: synthetic construct (others) |
Molecular weight | Experimental: 840 KDa / Theoretical: 840 KDa |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 0.93 mg/mL |
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Buffer | pH: 8 / Details: 40 mM Tris-HCl, 20 mM acetic acid, 2 mM EDTA |
Grid | Details: glow-discharged 200-mesh R1.2/1.3 Quantifoil grid |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Instrument: FEI VITROBOT MARK IV / Method: Blot for 1.5 second before plunging |
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Electron microscopy
Microscope | JEOL 2200FS |
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Alignment procedure | Legacy - Astigmatism: Objective lens astigmatism was corrected at 80,000 times magnification |
Specialist optics | Energy filter - Name: JEOL |
Details | 5k * 4k |
Date | Sep 19, 2015 |
Image recording | Category: CCD / Film or detector model: DIRECT ELECTRON DE-20 (5k x 3k) / Number real images: 101 / Average electron dose: 63 e/Å2 Details: Every image is the average of 60 frames recorded by the direct electron detecto |
Electron beam | Acceleration voltage: 200 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2 mm / Nominal defocus max: 4.0 µm / Nominal defocus min: 1.5 µm / Nominal magnification: 25000 |
Sample stage | Specimen holder model: GATAN LIQUID NITROGEN |
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Image processing
Details | The particles were selected manually using EMAN2 |
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CTF correction | Details: each particle |
Final reconstruction | Applied symmetry - Point group: O (octahedral) / Algorithm: OTHER / Resolution.type: BY AUTHOR / Resolution: 29.0 Å / Resolution method: OTHER / Software - Name: EMAN2 / Number images used: 1758 |