4PNB

A de novo designed hexameric coiled coil CC-Hex3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.052 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.241 

wwPDB Validation 3D Report Full Report


This is version 2.1 of the entry. See complete history

Literature

Computational design of water-soluble alpha-helical barrels.

Thomson, A.R.Wood, C.W.Burton, A.J.Bartlett, G.J.Sessions, R.B.Brady, R.L.Woolfson, D.N.

(2014) Science 346: 485-488

  • DOI: 10.1126/science.1257452
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The design of protein sequences that fold into prescribed de novo structures is challenging. General solutions to this problem require geometric descriptions of protein folds and methods to fit sequences to these. The α-helical coiled coils present a ...

    The design of protein sequences that fold into prescribed de novo structures is challenging. General solutions to this problem require geometric descriptions of protein folds and methods to fit sequences to these. The α-helical coiled coils present a promising class of protein for this and offer considerable scope for exploring hitherto unseen structures. For α-helical barrels, which have more than four helices and accessible central channels, many of the possible structures remain unobserved. Here, we combine geometrical considerations, knowledge-based scoring, and atomistic modeling to facilitate the design of new channel-containing α-helical barrels. X-ray crystal structures of the resulting designs match predicted in silico models. Furthermore, the observed channels are chemically defined and have diameters related to oligomer state, which present routes to design protein function.


    Organizational Affiliation

    School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK. School of Biochemistry, University of Bristol, Medical Sciences Building, University Walk, Bristol, BS8 1TD, UK. chzart@bristol.ac.uk d.n.woolfson@bristol.ac.uk.,School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK. School of Biochemistry, University of Bristol, Medical Sciences Building, University Walk, Bristol, BS8 1TD, UK.,School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK. chzart@bristol.ac.uk d.n.woolfson@bristol.ac.uk.,School of Biochemistry, University of Bristol, Medical Sciences Building, University Walk, Bristol, BS8 1TD, UK.,School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CC-Hex3
A, B, C, D
31N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
ACE
Query on ACE
A, B, C, D
NON-POLYMERC2 H4 O

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.052 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.241 
  • Space Group: I 21 3
Unit Cell:
Length (Å)Angle (°)
a = 89.210α = 90.00
b = 89.210β = 90.00
c = 89.210γ = 90.00
Software Package:
Software NamePurpose
iMOSFLMdata reduction
PHENIXrefinement
Aimlessdata scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
European Research CouncilUnited Kingdom340764
Engineering and Physical Sciences Research CouncilUnited KingdomEP/J001430/1
Biotechnology and Biological Sciences Research CouncilUnited KingdomBB/J008990/1

Revision History 

  • Version 1.0: 2014-10-22
    Type: Initial release
  • Version 1.1: 2014-11-05
    Type: Database references
  • Version 2.0: 2017-08-30
    Type: Advisory, Atomic model, Author supporting evidence
  • Version 2.1: 2017-09-13
    Type: Author supporting evidence