8PVG

Structure of E. coli glutamine synthetase determined by cryoEM at 100 keV


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Starting Model: experimental
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This is version 1.1 of the entry. See complete history


Literature

Structure determination by cryoEM at 100 keV.

McMullan, G.Naydenova, K.Mihaylov, D.Yamashita, K.Peet, M.J.Wilson, H.Dickerson, J.L.Chen, S.Cannone, G.Lee, Y.Hutchings, K.A.Gittins, O.Sobhy, M.A.Wells, T.El-Gomati, M.M.Dalby, J.Meffert, M.Schulze-Briese, C.Henderson, R.Russo, C.J.

(2023) Proc Natl Acad Sci U S A 120: e2312905120-e2312905120

  • DOI: https://doi.org/10.1073/pnas.2312905120
  • Primary Citation of Related Structures:  
    8PV9, 8PVA, 8PVB, 8PVC, 8PVD, 8PVE, 8PVF, 8PVG, 8PVH, 8PVI, 8PVJ

  • PubMed Abstract: 

    Electron cryomicroscopy can, in principle, determine the structures of most biological molecules but is currently limited by access, specimen preparation difficulties, and cost. We describe a purpose-built instrument operating at 100 keV-including advances in electron optics, detection, and processing-that makes structure determination fast and simple at a fraction of current costs. The instrument attains its theoretical performance limits, allowing atomic resolution imaging of gold test specimens and biological molecular structure determination in hours. We demonstrate its capabilities by determining the structures of eleven different specimens, ranging in size from 140 kDa to 2 MDa, using a fraction of the data normally required. CryoEM with a microscope designed specifically for high-efficiency, on-the-spot imaging of biological molecules will expand structural biology to a wide range of previously intractable problems.


  • Organizational Affiliation

    Medical Research Council (MRC) Laboratory of Molecular Biology, Cambridge CB2 0QH, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Glutamine synthetase489Escherichia coliMutation(s): 0 
Gene Names: glnAc4819
EC: 6.3.1.2
UniProt
Find proteins for P0A9C5 (Escherichia coli (strain K12))
Explore P0A9C5 
Go to UniProtKB:  P0A9C5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0A9C5
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTServalcat0.4.27

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Medical Research Council (MRC, United Kingdom)United KingdomMC UP 120117
Medical Research Council (MRC, United Kingdom)United KingdomMC U105184322
Wellcome TrustUnited Kingdom220526/B/20/Z
Engineering and Physical Sciences Research CouncilUnited KingdomR122522
Innovate UKUnited Kingdom103806
Biotechnology and Biological Sciences Research Council (BBSRC)United KingdomBB/T003677/1

Revision History  (Full details and data files)

  • Version 1.0: 2023-11-29
    Type: Initial release
  • Version 1.1: 2023-12-06
    Changes: Database references