5KIC

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.205 

wwPDB Validation 3D Report Full Report


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

  • 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 th ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Neutrophil gelatinase-associated lipocalin
A, B, C
180Homo sapiensMutation(s): 0 
Gene Names: LCN2 (HNL, NGAL)
Find proteins for P80188 (Homo sapiens)
Go to Gene View: LCN2
Go to UniProtKB:  P80188
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
C
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
CL
Query on CL

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Download CCD File 
A, B, C
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
4OL
Query on 4OL

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Download CCD File 
A, B, 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

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Download CCD File 
A, B, C
CALIFORNIUM ION
Cf
NJOOSZZTDCOTJQ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.205 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 119.574α = 90.00
b = 119.574β = 90.00
c = 108.839γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
HKL-2000data reduction
REFMACrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-04-26
    Type: Initial release
  • Version 1.1: 2017-05-10
    Type: Database references
  • Version 1.2: 2017-09-06
    Type: Database references