5NJ1

The X-ray structure of the adduct formed in the reaction between hen egg white lysozyme and arsenoplatin-1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.185 

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This is version 1.1 of the entry. See complete history


Literature

Arsenoplatin-1 Is a Dual Pharmacophore Anticancer Agent.

Miodragovic, D.Merlino, A.Swindell, E.P.Bogachkov, A.Ahn, R.W.Abuhadba, S.Ferraro, G.Marzo, T.Mazar, A.P.Messori, L.O'Halloran, T.V.

(2019) J Am Chem Soc 141: 6453-6457

  • DOI: 10.1021/jacs.8b13681
  • Primary Citation of Related Structures:  
    5NJ1, 5NJ7

  • PubMed Abstract: 
  • Arsenoplatins are adducts of two chemically important anticancer drugs, cisplatin and arsenic trioxide, that have a Pt(II) bond to an As(III) hydroxide center. Screens of the NCI-60 human tumor cell lines reveal that arsenoplatin-1 (AP-1), [Pt(μ-NHC(CH 3 )O) 2 ClAs(OH) 2 ], the first representative of this novel class of anticancer agents, displays a superior activity profile relative to the parent drugs As 2 O 3 or cisplatin in a majority of cancer cell lines tested ...

    Arsenoplatins are adducts of two chemically important anticancer drugs, cisplatin and arsenic trioxide, that have a Pt(II) bond to an As(III) hydroxide center. Screens of the NCI-60 human tumor cell lines reveal that arsenoplatin-1 (AP-1), [Pt(μ-NHC(CH 3 )O) 2 ClAs(OH) 2 ], the first representative of this novel class of anticancer agents, displays a superior activity profile relative to the parent drugs As 2 O 3 or cisplatin in a majority of cancer cell lines tested. These activity profiles are important because the success of arsenic trioxide in blood cancers (such as APL) has not been seen in solid tumors due to the rapid clearance of arsenous acid from the body. To understand the biological chemistry of these compounds, we evaluated interactions of AP-1 with the two important classes of biomolecules-proteins and DNA. The first structural studies of AP-1 bound to model proteins reveal that platinum(II) binds the Nε of His in a manner that preserves the Pt-As bond. We find that AP-1 readily enters cells and binds to DNA with an intact Pt-As bond (Pt:As ratio of 1). At longer incubation times, however, the Pt:As ratio in DNA samples increases, suggesting that the Pt-As bond breaks and releases the As(OH) 2 moiety. We conclude that arsenoplatin-1 has the potential to deliver both Pt and As species to a variety of hematological and solid cancers.


    Organizational Affiliation

    Chemistry of Life Processes Institute , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Lysozyme CA129Gallus gallusMutation(s): 0 
Gene Names: LYZ
EC: 3.2.1.17
UniProt
Find proteins for P00698 (Gallus gallus)
Explore P00698 
Go to UniProtKB:  P00698
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
ALY
Query on ALY
AL-PEPTIDE LINKINGC8 H16 N2 O3LYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.185 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 79.512α = 90
b = 79.512β = 90
c = 35.906γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2018-05-16
    Type: Initial release
  • Version 1.1: 2019-05-29
    Changes: Data collection, Database references