7P3H

Peptide HC02 - Lanthanide Selectivity Engineered into Structurally Characterized Designed Coiled Coils


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.210 
  • R-Value Observed: 0.211 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Location-Dependent Lanthanide Selectivity Engineered into Structurally Characterized Designed Coiled Coils.

Slope, L.N.Daubney, O.J.Campbell, H.White, S.A.Peacock, A.F.A.

(2021) Angew Chem Int Ed Engl 60: 24473-24477

  • DOI: 10.1002/anie.202110500
  • Primary Citation of Related Structures:  
    7P3H

  • PubMed Abstract: 
  • Herein we report unprecedented location-dependent, size-selective binding to designed lanthanide (Ln 3+ ) sites within miniature protein coiled coil scaffolds. Not only do these engineered sites display unusual Ln 3+ selectivity for moderately large Ln 3+ ions (Nd to Tb), for the first time we demonstrate that selectivity can be location-dependent and can be programmed into the sequence ...

    Herein we report unprecedented location-dependent, size-selective binding to designed lanthanide (Ln 3+ ) sites within miniature protein coiled coil scaffolds. Not only do these engineered sites display unusual Ln 3+ selectivity for moderately large Ln 3+ ions (Nd to Tb), for the first time we demonstrate that selectivity can be location-dependent and can be programmed into the sequence. A 1 nm linear translation of the binding site towards the N-terminus can convert a selective site into a highly promiscuous one. An X-ray crystal structure, the first of a lanthanide binding site within a coiled coil to be reported, coupled with CD studies, reveal the existence of an optimal radius that likely stems from the structural constraints of the coiled coil scaffold. To the best of our knowledge this is the first report of location-dependent metal selectivity within a coiled coil scaffold, as well as the first report of location-dependent Ln 3+ selectivity within a protein.


    Organizational Affiliation

    School of Chemistry, University of Birmingham, Edgbaston, B15 2TT, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Peptide HC02A, B, C38synthetic constructMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.210 
  • R-Value Observed: 0.211 
  • Space Group: H 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 103.04α = 90
b = 103.04β = 90
c = 46.88γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
MOSFLMdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Defence Science and Technology Laboratory (DSTL)United Kingdom--

Revision History  (Full details and data files)

  • Version 1.0: 2021-09-15
    Type: Initial release
  • Version 1.1: 2021-09-29
    Changes: Data collection, Database references
  • Version 1.2: 2021-11-10
    Changes: Data collection, Database references