8H2H

Cryo-EM structure of a Group II Intron Complexed with its Reverse Transcriptase


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Functionalized graphene grids with various charges for single-particle cryo-EM.

Lu, Y.Liu, N.Liu, Y.Zheng, L.Yang, J.Wang, J.Jia, X.Zi, Q.Peng, H.Rao, Y.Wang, H.W.

(2022) Nat Commun 13: 6718-6718

  • DOI: https://doi.org/10.1038/s41467-022-34579-w
  • Primary Citation of Related Structures:  
    8H2H

  • PubMed Abstract: 

    A major hurdle for single particle cryo-EM in structural determination lies in the specimen preparation impaired by the air-water interface (AWI) and preferential particle-orientation problems. In this work, we develop functionalized graphene grids with various charges via a dediazoniation reaction for cryo-EM specimen preparation. The graphene grids are paraffin-assistant fabricated, which appear with less contaminations compared with those produced by polymer transfer method. By applying onto three different types of macromolecules, we demonstrate that the high-yield charged graphene grids bring macromolecules away from the AWI and enable adjustable particle-orientation distribution for more robust single particle cryo-EM structural determination.


  • Organizational Affiliation

    School of Life Sciences, Tsinghua University, Beijing, China.


Macromolecules

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Group II intron-encoded protein LtrAC [auth D]599Lactococcus lactisMutation(s): 0 
Gene Names: ltrAmatR
EC: 2.7.7.49 (PDB Primary Data), 3.1 (PDB Primary Data)
UniProt
Find proteins for P0A3U0 (Lactococcus lactis subsp. cremoris)
Explore P0A3U0 
Go to UniProtKB:  P0A3U0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0A3U0
Sequence Annotations
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  • Reference Sequence
Find similar nucleic acids by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains LengthOrganismImage
LtrB902Lactococcus lactis
Sequence Annotations
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  • Reference Sequence

Find similar nucleic acids by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains LengthOrganismImage
RNA (5'-R(P*CP*AP*CP*AP*UP*CP*CP*AP*UP*AP*AP*C)-3')12Lactococcus lactis
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Not funded--

Revision History  (Full details and data files)

  • Version 1.0: 2022-11-23
    Type: Initial release
  • Version 1.1: 2024-11-13
    Changes: Data collection, Structure summary