E.coli Hemolysin E (HlyE, ClyA, SheA)

Experimental Data Snapshot

  • Resolution: 2.00 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.198 

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This is version 1.4 of the entry. See complete history


E. Coli Hemolysin E (Hlye, Clya, Shea): X-Ray Crystal Structure of the Toxin and Observation of Membrane Pores by Electron Microscopy

Wallace, A.J.Stillman, T.J.Atkins, A.Jamieson, S.J.Bullough, P.A.Green, J.Artymiuk, P.J.

(2000) Cell 100: 265

  • DOI: https://doi.org/10.1016/s0092-8674(00)81564-0
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Hemolysin E (HlyE) is a novel pore-forming toxin of Escherichia coli, Salmonella typhi, and Shigella flexneri. Here we report the X-ray crystal structure of the water-soluble form of E. coli HlyE at 2.0 A resolution and the visualization of the lipid-associated form of the toxin in projection at low resolution by electron microscopy. The crystal structure reveals HlyE to be the first member of a new family of toxin structures, consisting of an elaborated helical bundle some 100 A long. The electron micrographs show how HlyE oligomerizes in the presence of lipid to form transmembrane pores. Taken together, the data from these two structural techniques allow us to propose a simple model for the structure of the pore and for membrane interaction.

  • Organizational Affiliation

    The Krebs Institute, Department of Molecular Biology and Biotechnology, University of Sheffield, Western Bank, United Kingdom.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
HEMOLYSIN E318Escherichia coli K-12Mutation(s): 1 
Gene Names: HLYE
Find proteins for P77335 (Escherichia coli (strain K12))
Explore P77335 
Go to UniProtKB:  P77335
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP77335
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on SO4

Download Ideal Coordinates CCD File 
O4 S
Experimental Data & Validation

Experimental Data

  • Resolution: 2.00 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.198 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 84.47α = 90
b = 84.47β = 90
c = 142.69γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
Agrovatadata scaling
ROTAVATAdata scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-01-23
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-01-24
    Changes: Source and taxonomy
  • Version 1.4: 2024-05-08
    Changes: Data collection, Database references, Derived calculations