Cryo-EM structure of ESCRT-III helical Vps24 filaments

Experimental Data Snapshot

  • Resolution: 3.20 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

wwPDB Validation   3D Report Full Report

This is version 1.1 of the entry. See complete history


Structure and assembly of ESCRT-III helical Vps24 filaments.

Huber, S.T.Mostafavi, S.Mortensen, S.A.Sachse, C.

(2020) Sci Adv 6: eaba4897-eaba4897

  • DOI: https://doi.org/10.1126/sciadv.aba4897
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    ESCRT-III proteins mediate a range of cellular membrane remodeling activities such as multivesicular body biogenesis, cytokinesis, and viral release. Critical to these processes is the assembly of ESCRT-III subunits into polymeric structures. In this study, we determined the cryo-EM structure of a helical assembly of Saccharomyces cerevisiae Vps24 at 3.2-Å resolution and found that Vps24 adopts an elongated open conformation. Vps24 forms a domain-swapped dimer extended into protofilaments that associate into a double-stranded apolar filament. We demonstrate that, upon binding negatively charged lipids, Vps24 homopolymer filaments undergo partial disassembly into shorter filament fragments and oligomers. Upon the addition of Vps24, Vps2, and Snf7, liposomes are deformed into neck and tubular structures by an ESCRT-III heteropolymer coat. The filamentous Vps24 homopolymer assembly structure and interaction studies reveal how Vps24 could introduce unique geometric properties to mixed-type ESCRT-III heteropolymers and contribute to the process of membrane scission events.

  • Organizational Affiliation

    European Molecular Biology Laboratory (EMBL), Structural and Computational Biology Unit, Meyerhofstraße 1, 69117 Heidelberg, Germany.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Vacuolar protein-sorting-associated protein 24A [auth B],
B [auth A],
227Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: VPS24DID3YKL041WYKL254
Find proteins for P36095 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P36095 
Go to UniProtKB:  P36095
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP36095
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 3.20 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 
EM Software:
TaskSoftware PackageVersion

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2020-08-26
    Type: Initial release
  • Version 1.1: 2020-09-16
    Changes: Database references