1U0I

IAAL-E3/K3 heterodimer


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: back calculated data agree with experimental NOESY spectrum 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

NMR solution structure of a highly stable de novo heterodimeric coiled-coil

Lindhout, D.A.Litowski, J.R.Mercier, P.Hodges, R.S.Sykes, B.D.

(2004) Biopolymers 75: 367-375

  • DOI: https://doi.org/10.1002/bip.20150
  • Primary Citation of Related Structures:  
    1U0I

  • PubMed Abstract: 

    The NMR solution structure of a highly stable coiled-coil IAAL-E3/K3 has been solved. The E3/K3 coiled-coil is a 42-residue de novo designed coiled-coil comprising three heptad repeats per subunit, stabilized by hydrophobic contacts within the core and electrostatic interactions at the interface crossing the hydrophobic core which direct heterodimer formation. This E3/K3 domain has previously been shown to have high alpha-helical content as well as possessing a low dissociation constant (70 nM). The E3/K3 structure is completely alpha-helical and is an archetypical coiled-coil in solution, as determined using a combination of (1)H-NOE and homology based structural restraints. This structure provides a structural framework for visualizing the important interactions for stability and specificity, which are key to protein engineering applications such as affinity purification and de novo design.


  • Organizational Affiliation

    CIHR Group in Protein Structure and Function and Department of Biochemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2H7.


Macromolecules

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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
IAAL-E321N/AMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
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  • Reference Sequence

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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
IAAL-K321N/AMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: back calculated data agree with experimental NOESY spectrum 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-10-19
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2022-03-02
    Changes: Database references, Derived calculations
  • Version 1.4: 2024-05-22
    Changes: Data collection