4DFW

Oxime-based Post Solid-phase Peptide Diversification: Identification of High Affinity Polo-like Kinase 1 (Plk1) Polo-box Domain Binding Peptides


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.155 
  • R-Value Observed: 0.157 

wwPDB Validation   3D Report Full Report


This is version 2.0 of the entry. See complete history


Literature

Oxime-based Post Solid-phase Peptide Diversification: Identification of High Affinity Polo-like Kinase 1 (Plk1) Polo-box Domain Binding Peptides

Liu, F.Park, J.-E.Qian, W.-J.Lim, D.Scharow, A.Berg, T.Yaffe, M.B.Lee, K.S.Burke, T.R.

(2012) Chem Biol 

  • DOI: https://doi.org/10.1021/cb200469a
  • Primary Citation of Related Structures:  
    4DFW

  • PubMed Abstract: 

    In an effort to develop improved binding antagonists of the polo-like kinase 1 (Plk1) polo-box domain (PBD), we optimized interactions of the known high affinity 5-mer peptide PLHSpT using oxime-based post solid-phase peptide diversification of the N-terminal Pro residue. This allowed us to achieve up to two orders of magnitude potency enhancement. An X-ray crystal structure of the highest affinity analogue in complex with Plk1 PBD revealed new binding interactions in a hydrophobic channel that had been occluded in X-ray structures of the unliganded protein. This study represents an important example where amino acid modification by post solid-phase oxime ligation can facilitate the development of protein-protein interaction inhibitors by identifying new binding pockets that would not otherwise be accessible to coded amino acid residues.


  • Organizational Affiliation

    Chemical Biology Laboratory, Molecular Discovery Program, Center for Cancer Research, National Cancer Institute-Frederick, Frederick, MD 21702, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Serine/threonine-protein kinase PLK1237Homo sapiensMutation(s): 0 
Gene Names: PLKPLK1
EC: 2.7.11.21
UniProt & NIH Common Fund Data Resources
Find proteins for P53350 (Homo sapiens)
Explore P53350 
Go to UniProtKB:  P53350
PHAROS:  P53350
GTEx:  ENSG00000166851 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP53350
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
PeptideB [auth D]7N/AMutation(s): 0 
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Modified Residues  2 Unique
IDChains TypeFormula2D DiagramParent
0LF
Query on 0LF
B [auth D]L-PEPTIDE LINKINGC15 H21 N O3PRO
TPO
Query on TPO
B [auth D]L-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.155 
  • R-Value Observed: 0.157 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 35.665α = 76.44
b = 34.844β = 86.95
c = 47.097γ = 69.14
Software Package:
Software NamePurpose
StructureStudiodata collection
AMoREphasing
PHENIXrefinement
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-03-28
    Type: Initial release
  • Version 1.1: 2018-01-24
    Changes: Database references, Structure summary
  • Version 2.0: 2023-11-15
    Changes: Atomic model, Data collection, Database references, Derived calculations