7Q2Q

cryo iDPC-STEM structure recorded with CSA 3.5


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.30 Å
  • Aggregation State: HELICAL ARRAY 
  • Reconstruction Method: HELICAL 

wwPDB Validation   3D Report Full Report


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Literature

Single-particle cryo-EM structures from iDPC-STEM at near-atomic resolution.

Lazic, I.Wirix, M.Leidl, M.L.de Haas, F.Mann, D.Beckers, M.Pechnikova, E.V.Muller-Caspary, K.Egoavil, R.Bosch, E.G.T.Sachse, C.

(2022) Nat Methods 19: 1126-1136

  • DOI: 10.1038/s41592-022-01586-0
  • Primary Citation of Related Structures:  
    7Q22, 7Q23, 7Q2Q, 7Q2R, 7Q2S

  • PubMed Abstract: 
  • In electron cryomicroscopy (cryo-EM), molecular images of vitrified biological samples are obtained by conventional transmission microscopy (CTEM) using large underfocuses and subsequently computationally combined into a high-resolution three-dimensional structure ...

    In electron cryomicroscopy (cryo-EM), molecular images of vitrified biological samples are obtained by conventional transmission microscopy (CTEM) using large underfocuses and subsequently computationally combined into a high-resolution three-dimensional structure. Here, we apply scanning transmission electron microscopy (STEM) using the integrated differential phase contrast mode also known as iDPC-STEM to two cryo-EM test specimens, keyhole limpet hemocyanin (KLH) and tobacco mosaic virus (TMV). The micrographs show complete contrast transfer to high resolution and enable the cryo-EM structure determination for KLH at 6.5 Å resolution, as well as for TMV at 3.5 Å resolution using single-particle reconstruction methods, which share identical features with maps obtained by CTEM of a previously acquired same-sized TMV data set. These data show that STEM imaging in general, and in particular the iDPC-STEM approach, can be applied to vitrified single-particle specimens to determine near-atomic resolution cryo-EM structures of biological macromolecules.


    Organizational Affiliation

    Department of Biology, Heinrich Heine University, Düsseldorf, Germany. c.sachse@fz-juelich.de.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Capsid proteinA153Tobacco mosaic virus (vulgare)Mutation(s): 0 
Gene Names: CP
UniProt
Find proteins for P69687 (Tobacco mosaic virus (strain vulgare))
Explore P69687 
Go to UniProtKB:  P69687
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP69687
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsLengthOrganismImage
RNA (5'-R(P*GP*AP*A)-3')B3Tobacco mosaic virus (vulgare)
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.30 Å
  • Aggregation State: HELICAL ARRAY 
  • Reconstruction Method: HELICAL 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Helmholtz AssociationGermany--

Revision History  (Full details and data files)

  • Version 1.0: 2022-09-21
    Type: Initial release