6ZVS

C12 symmetry: Bacterial Vipp1 and PspA are members of the ancient ESCRT-III membrane-remodeling superfamily.


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Bacterial Vipp1 and PspA are members of the ancient ESCRT-III membrane-remodeling superfamily.

Liu, J.Tassinari, M.Souza, D.P.Naskar, S.Noel, J.K.Bohuszewicz, O.Buck, M.Williams, T.A.Baum, B.Low, H.H.

(2021) Cell 184: 3660-3673.e18

  • DOI: https://doi.org/10.1016/j.cell.2021.05.041
  • Primary Citation of Related Structures:  
    6ZVR, 6ZVS, 6ZVT, 6ZW4, 6ZW5, 6ZW6, 6ZW7

  • PubMed Abstract: 

    Membrane remodeling and repair are essential for all cells. Proteins that perform these functions include Vipp1/IM30 in photosynthetic plastids, PspA in bacteria, and ESCRT-III in eukaryotes. Here, using a combination of evolutionary and structural analyses, we show that these protein families are homologous and share a common ancient evolutionary origin that likely predates the last universal common ancestor. This homology is evident in cryo-electron microscopy structures of Vipp1 rings from the cyanobacterium Nostoc punctiforme presented over a range of symmetries. Each ring is assembled from rungs that stack and progressively tilt to form dome-shaped curvature. Assembly is facilitated by hinges in the Vipp1 monomer, similar to those in ESCRT-III proteins, which allow the formation of flexible polymers. Rings have an inner lumen that is able to bind and deform membranes. Collectively, these data suggest conserved mechanistic principles that underlie Vipp1, PspA, and ESCRT-III-dependent membrane remodeling across all domains of life.


  • Organizational Affiliation

    Department of Infectious Disease, Imperial College, London, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Vipp1258Nostoc punctiformeMutation(s): 0 
UniProt
Find proteins for B2J6D9 (Nostoc punctiforme (strain ATCC 29133 / PCC 73102))
Explore B2J6D9 
Go to UniProtKB:  B2J6D9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupB2J6D9
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONRELION

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Wellcome TrustUnited Kingdom--

Revision History  (Full details and data files)

  • Version 1.0: 2021-08-04
    Type: Initial release
  • Version 1.1: 2022-01-19
    Changes: Database references
  • Version 1.2: 2022-03-02
    Changes: Structure summary
  • Version 1.3: 2022-05-04
    Changes: Structure summary