5KIC

Long-sought stabilization of berkelium(IV) in solution: An anomaly within the heavy actinide series


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.207 

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This is version 1.2 of the entry. See complete history


Literature

Chelation and stabilization of berkelium in oxidation state +IV.

Deblonde, G.J.Sturzbecher-Hoehne, M.Rupert, P.B.An, D.D.Illy, M.C.Ralston, C.Y.Brabec, J.de Jong, W.A.Strong, R.K.Abergel, R.J.

(2017) Nat Chem 9: 843-849

  • DOI: 10.1038/nchem.2759
  • Primary Citation of Related Structures:  
    5KIC

  • PubMed Abstract: 
  • Berkelium (Bk) has been predicted to be the only transplutonium element able to exhibit both +III and +IV oxidation states in solution, but evidence of a stable oxidized Bk chelate has so far remained elusive. Here we describe the stabilization of the heaviest 4+ ion of the periodic table, under mild aqueous conditions, using a siderophore derivative ...

    Berkelium (Bk) has been predicted to be the only transplutonium element able to exhibit both +III and +IV oxidation states in solution, but evidence of a stable oxidized Bk chelate has so far remained elusive. Here we describe the stabilization of the heaviest 4+ ion of the periodic table, under mild aqueous conditions, using a siderophore derivative. The resulting Bk(IV) complex exhibits luminescence via sensitization through an intramolecular antenna effect. This neutral Bk(IV) coordination compound is not sequestered by the protein siderocalin-a mammalian metal transporter-in contrast to the negatively charged species obtained with neighbouring trivalent actinides americium, curium and californium (Cf). The corresponding Cf(III)-ligand-protein ternary adduct was characterized by X-ray diffraction analysis. Combined with theoretical predictions, these data add significant insight to the field of transplutonium chemistry, and may lead to innovative Bk separation and purification processes.


    Organizational Affiliation

    Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Neutrophil gelatinase-associated lipocalinA, B, C180Homo sapiensMutation(s): 0 
Gene Names: LCN2HNLNGAL
UniProt & NIH Common Fund Data Resources
Find proteins for P80188 (Homo sapiens)
Explore P80188 
Go to UniProtKB:  P80188
PHAROS:  P80188
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
4OL (Subject of Investigation/LOI)
Query on 4OL

Download Ideal Coordinates CCD File 
E [auth A], H [auth B], K [auth C]N,N'-butane-1,4-diylbis[1-hydroxy-N-(3-{[(1-hydroxy-6-oxo-1,6-dihydropyridin-2-yl)carbonyl]amino}propyl)-6-oxo-1,6-dihydropyridine-2-carboxamide]
C34 H38 N8 O12
KUWKQASGHNTJAT-UHFFFAOYSA-N
 Ligand Interaction
CF
Query on CF

Download Ideal Coordinates CCD File 
D [auth A], G [auth B], J [auth C]CALIFORNIUM ION
Cf
NJOOSZZTDCOTJQ-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download Ideal Coordinates CCD File 
M [auth C], N [auth C], O [auth C]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
CL
Query on CL

Download Ideal Coordinates CCD File 
F [auth A], I [auth B], L [auth C]CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.207 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 119.574α = 90
b = 119.574β = 90
c = 108.839γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata 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: 2017-04-26
    Type: Initial release
  • Version 1.1: 2017-05-10
    Changes: Database references
  • Version 1.2: 2017-09-06
    Changes: Database references