5XF5

Nucleosome core particle with an adduct of a binuclear RAPTA (Ru-arene-phosphaadamantane) compound having a 1,2-diphenylethylenediamine linker (R,S-configuration)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.82 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.228 

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This is version 1.2 of the entry. See complete history


Literature

Nucleosome acidic patch-targeting binuclear ruthenium compounds induce aberrant chromatin condensation

Davey, G.E.Adhireksan, Z.Ma, Z.Riedel, T.Sharma, D.Padavattan, S.Rhodes, D.Ludwig, A.Sandin, S.Murray, B.S.Dyson, P.J.Davey, C.A.

(2017) Nat Commun 8: 1575-1575

  • DOI: https://doi.org/10.1038/s41467-017-01680-4
  • Primary Citation of Related Structures:  
    5XF3, 5XF4, 5XF5, 5XF6

  • PubMed Abstract: 

    The 'acidic patch' is a highly electronegative cleft on the histone H2A-H2B dimer in the nucleosome. It is a fundamental motif for protein binding and chromatin dynamics, but the cellular impact of targeting this potentially therapeutic site with exogenous molecules remains unclear. Here, we characterize a family of binuclear ruthenium compounds that selectively target the nucleosome acidic patch, generating intra-nucleosomal H2A-H2B cross-links as well as inter-nucleosomal cross-links. In contrast to cisplatin or the progenitor RAPTA-C anticancer drugs, the binuclear agents neither arrest specific cell cycle phases nor elicit DNA damage response, but rather induce an irreversible, anomalous state of condensed chromatin that ultimately results in apoptosis. In vitro, the compounds induce misfolding of chromatin fibre and block the binding of the regulator of chromatin condensation 1 (RCC1) acidic patch-binding protein. This family of chromatin-modifying molecules has potential for applications in drug development and as tools for chromatin research.


  • Organizational Affiliation

    NTU Institute of Structural Biology, Nanyang Technological University, 59 Nanyang Drive, Singapore, 636921, Singapore.


Macromolecules

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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Histone H3.1
A, E
136Homo sapiensMutation(s): 0 
Gene Names: 
UniProt & NIH Common Fund Data Resources
Find proteins for P68431 (Homo sapiens)
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Go to UniProtKB:  P68431
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UniProt GroupP68431
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Histone H4
B, F
103Homo sapiensMutation(s): 0 
Gene Names: 
UniProt & NIH Common Fund Data Resources
Find proteins for P62805 (Homo sapiens)
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Go to UniProtKB:  P62805
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UniProt GroupP62805
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Histone H2A type 1-B/E
C, G
130Homo sapiensMutation(s): 0 
Gene Names: HIST1H2ABH2AFMHIST1H2AEH2AFA
UniProt & NIH Common Fund Data Resources
Find proteins for P04908 (Homo sapiens)
Explore P04908 
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UniProt GroupP04908
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Histone H2B type 1-J
D, H
126Homo sapiensMutation(s): 0 
Gene Names: HIST1H2BJH2BFR
UniProt & NIH Common Fund Data Resources
Find proteins for P06899 (Homo sapiens)
Explore P06899 
Go to UniProtKB:  P06899
PHAROS:  P06899
GTEx:  ENSG00000124635 
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UniProt GroupP06899
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Entity ID: 5
MoleculeChains LengthOrganismImage
DNA (145-MER)145Homo sapiens
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Entity ID: 6
MoleculeChains LengthOrganismImage
DNA (145-MER)145Homo sapiens
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.82 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.228 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 107.21α = 90
b = 109.67β = 90
c = 182.04γ = 90
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-10-11
    Type: Initial release
  • Version 1.1: 2017-12-06
    Changes: Database references
  • Version 1.2: 2023-11-22
    Changes: Data collection, Database references, Derived calculations, Refinement description