Goslar chimallin C1 localized reconstruction

Experimental Data Snapshot

  • Resolution: 2.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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This is version 1.2 of the entry. See complete history


Architecture and self-assembly of the jumbo bacteriophage nuclear shell.

Laughlin, T.G.Deep, A.Prichard, A.M.Seitz, C.Gu, Y.Enustun, E.Suslov, S.Khanna, K.Birkholz, E.A.Armbruster, E.McCammon, J.A.Amaro, R.E.Pogliano, J.Corbett, K.D.Villa, E.

(2022) Nature 608: 429-435

  • DOI: https://doi.org/10.1038/s41586-022-05013-4
  • Primary Citation of Related Structures:  
    7SQQ, 7SQR, 7SQS, 7SQT, 7SQU, 7SQV

  • PubMed Abstract: 

    Bacteria encode myriad defences that target the genomes of infecting bacteriophage, including restriction-modification and CRISPR-Cas systems 1 . In response, one family of large bacteriophages uses a nucleus-like compartment to protect its replicating genomes by excluding host defence factors 2-4 . However, the principal composition and structure of this compartment remain unknown. Here we find that the bacteriophage nuclear shell assembles primarily from one protein, which we name chimallin (ChmA). Combining cryo-electron tomography of nuclear shells in bacteriophage-infected cells and cryo-electron microscopy of a minimal chimallin compartment in vitro, we show that chimallin self-assembles as a flexible sheet into closed micrometre-scale compartments. The architecture and assembly dynamics of the chimallin shell suggest mechanisms for its nucleation and growth, and its role as a scaffold for phage-encoded factors mediating macromolecular transport, cytoskeletal interactions, and viral maturation.

  • Organizational Affiliation

    Department of Molecular Biology, School of Biological Sciences, University of California San Diego, La Jolla, CA, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
B [auth C],
C [auth B],
634Escherichia phage vB_EcoM_GoslarMutation(s): 0 
Gene Names: Goslar_00189
Find proteins for A0A482GDX1 (Escherichia phage vB_EcoM_Goslar)
Explore A0A482GDX1 
Go to UniProtKB:  A0A482GDX1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A482GDX1
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01-GM129245
National Science Foundation (NSF, United States)United StatesNSF DBI 1920374
Howard Hughes Medical Institute (HHMI)United States--
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesR21AI148814

Revision History  (Full details and data files)

  • Version 1.0: 2022-07-27
    Type: Initial release
  • Version 1.1: 2022-08-17
    Changes: Database references
  • Version 1.2: 2022-08-24
    Changes: Database references