5F2Y

A de novo designed heptameric coiled coil CC-Hept-homoCys-H-E


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.221 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Installing hydrolytic activity into a completely de novo protein framework.

Burton, A.J.Thomson, A.R.Dawson, W.M.Brady, R.L.Woolfson, D.N.

(2016) Nat.Chem. 8: 837-844

  • DOI: 10.1038/nchem.2555
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The design of enzyme-like catalysts tests our understanding of sequence-to-structure/function relationships in proteins. Here we install hydrolytic activity predictably into a completely de novo and thermostable α-helical barrel, which comprises seve ...

    The design of enzyme-like catalysts tests our understanding of sequence-to-structure/function relationships in proteins. Here we install hydrolytic activity predictably into a completely de novo and thermostable α-helical barrel, which comprises seven helices arranged around an accessible channel. We show that the lumen of the barrel accepts 21 mutations to functional polar residues. The resulting variant, which has cysteine-histidine-glutamic acid triads on each helix, hydrolyses p-nitrophenyl acetate with catalytic efficiencies that match the most-efficient redesigned hydrolases based on natural protein scaffolds. This is the first report of a functional catalytic triad engineered into a de novo protein framework. The flexibility of our system also allows the facile incorporation of unnatural side chains to improve activity and probe the catalytic mechanism. Such a predictable and robust construction of truly de novo biocatalysts holds promise for applications in chemical and biochemical synthesis.


    Organizational Affiliation

    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-Hept-hCys-H-E
A, B, C, D, E, F, G
31N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
HCS
Query on HCS
A, B, C, D, E, F, G
L-PEPTIDE LINKINGC4 H9 N O2 S

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ACE
Query on ACE
A, B, C, D, E, F, G
NON-POLYMERC2 H4 O

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.221 
  • Space Group: I 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 62.250α = 90.00
b = 61.980β = 110.92
c = 68.710γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
iMOSFLMdata reduction
PHENIXphasing
Aimlessdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
European Research CouncilUnited Kingdom340764

Revision History 

  • Version 1.0: 2016-07-06
    Type: Initial release
  • Version 1.1: 2016-09-07
    Type: Database references