5KKV

Metal-mediated coiled-coil GCN4-p2L peptide assembly crystal


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.226 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Accessing Three-Dimensional Crystals with Incorporated Guests through Metal-Directed Coiled-Coil Peptide Assembly.

Nepal, M.Sheedlo, M.J.Das, C.Chmielewski, J.

(2016) J.Am.Chem.Soc. 138: 11051-11057

  • DOI: 10.1021/jacs.6b06708

  • PubMed Abstract: 
  • Obtaining three-dimensional (3D) protein and peptide crystals on demand requires a precisely orchestrated hierarchical assembly of biopolymer building blocks. In this work, we disclose a metal-ion-mediated strategy to assemble trimeric coiled-coil pe ...

    Obtaining three-dimensional (3D) protein and peptide crystals on demand requires a precisely orchestrated hierarchical assembly of biopolymer building blocks. In this work, we disclose a metal-ion-mediated strategy to assemble trimeric coiled-coil peptides in a head-to-tail fashion into linear strands with interstrand interactions. This design led to hexagonal 3D peptide crystal formation within 30 min in the presence of divalent metal ions. The crystal morphology could be controlled by varying the metal ion/peptide ratio, resulting in hexagonal discs to rods. Diffraction studies elucidated the head-to-tail arrangement of the coiled-coil linear strands and their hexagonal, antiparallel packing within the crystal. Unsatisfied ligands at the hexagonal ends of the crystals were harnessed as a powerful means to direct His-tagged fluorophores to distinct locations within the crystals. Overall, the designed hierarchical assembly provides a facile means to obtain 3D peptide crystals and incorporate His-tag-based cargoes and may have potential use in drug delivery and sensor design.


    Organizational Affiliation

    Department of Chemistry, Purdue University , 560 Oval Drive, West Lafayette, Indiana 47907, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GCN4-p2L
A
36N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
NTA
Query on NTA
A
NON-POLYMERC6 H9 N O6

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.226 
  • Space Group: P 3 2 1
Unit Cell:
Length (Å)Angle (°)
a = 38.328α = 90.00
b = 38.328β = 90.00
c = 46.165γ = 120.00
Software Package:
Software NamePurpose
Cootmodel building
PHENIXrefinement
HKL-2000data scaling
PHENIXphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Science Foundation (United States)United StatesCHE1609406

Revision History 

  • Version 1.0: 2016-08-24
    Type: Initial release
  • Version 1.1: 2016-09-07
    Type: Database references
  • Version 1.2: 2017-09-20
    Type: Author supporting evidence, Derived calculations, Refinement description
  • Version 1.3: 2017-09-27
    Type: Data collection