A hexameric de novo coiled-coil assembly: CC-Type2-(YaFd)4-W19(BrPhe).

Experimental Data Snapshot

  • Resolution: 1.65 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.222 

wwPDB Validation   3D Report Full Report

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How Coiled-Coil Assemblies Accommodate Multiple Aromatic Residues.

Rhys, G.G.Dawson, W.M.Beesley, J.L.Martin, F.J.O.Brady, R.L.Thomson, A.R.Woolfson, D.N.

(2021) Biomacromolecules 22: 2010-2019

  • DOI: https://doi.org/10.1021/acs.biomac.1c00131
  • Primary Citation of Related Structures:  
    7BO8, 7BO9, 7BOA

  • PubMed Abstract: 

    Rational protein design requires understanding the contribution of each amino acid to a targeted protein fold. For a subset of protein structures, namely, α-helical coiled coils (CCs), knowledge is sufficiently advanced to allow the rational de novo design of many structures, including entirely new protein folds. Current CC design rules center on using aliphatic hydrophobic residues predominantly to drive the folding and assembly of amphipathic α helices. The consequences of using aromatic residues-which would be useful for introducing structural probes, and binding and catalytic functionalities-into these interfaces are not understood. There are specific examples of designed CCs containing such aromatic residues, e.g ., phenylalanine-rich sequences, and the use of polar aromatic residues to make buried hydrogen-bond networks. However, it is not known generally if sequences rich in tyrosine can form CCs, or what CC assemblies these would lead to. Here, we explore tyrosine-rich sequences in a general CC-forming background and resolve new CC structures. In one of these, an antiparallel tetramer, the tyrosine residues are solvent accessible and pack at the interface between the core and the surface. In another more complex structure, the residues are buried and form an extended hydrogen-bond network.

  • Organizational Affiliation

    School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B, C, D, E
A, B, C, D, E, F, G, H
32synthetic constructMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
Query on 4BF
A, B, C, D, E
A, B, C, D, E, F, G, H
Experimental Data & Validation

Experimental Data

  • Resolution: 1.65 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.222 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 40.707α = 90
b = 75.608β = 90
c = 88.123γ = 90
Software Package:
Software NamePurpose
Aimlessdata scaling
xia2data scaling
PDB_EXTRACTdata extraction
DIALSdata reduction

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
European Research Council (ERC)European Union340764
Engineering and Physical Sciences Research CouncilUnited KingdomEP/G036764/1

Revision History  (Full details and data files)

  • Version 1.0: 2021-05-19
    Type: Initial release