5E5E

X-ray structure of the adduct formed in the reaction between RNase A and a neutral organometallic derivative [Pt(pbi)(Me)(DMSO)], pbi=2-(2'-pyridil)benzimidazole (compound 3)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.192 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Cytotoxic properties of a new organometallic platinum(ii) complex and its gold(i) heterobimetallic derivatives.

Serratrice, M.Maiore, L.Zucca, A.Stoccoro, S.Landini, I.Mini, E.Massai, L.Ferraro, G.Merlino, A.Messori, L.Cinellu, M.A.

(2015) Dalton Trans 45: 579-590

  • DOI: 10.1039/c5dt02714d
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • A novel platinum(ii) organometallic complex, [Pt(pbi)(Me)(DMSO)], bearing the 2-(2'-pyridyl)-benzimidazole (pbiH) ligand, was synthesized and fully characterized. Interestingly, the reaction of this organometallic platinum(ii) complex with two distin ...

    A novel platinum(ii) organometallic complex, [Pt(pbi)(Me)(DMSO)], bearing the 2-(2'-pyridyl)-benzimidazole (pbiH) ligand, was synthesized and fully characterized. Interestingly, the reaction of this organometallic platinum(ii) complex with two distinct gold(i) phosphane compounds afforded the corresponding heterobimetallic derivatives with the pbi ligand bridging the two metal centers. The antiproliferative properties in vitro of [Pt(pbi)(Me)(DMSO)] and its gold(i) derivatives as well as those of the known coordination platinum(ii) and palladium(ii) complexes with the same ligand, of the general formula [MCl2(pbiH)], were comparatively evaluated against A2780 cancer cells, either sensitive or resistant to cisplatin. A superior biological activity of the organometallic compound clearly emerged compared to the corresponding platinum(ii) complex; the antiproliferative effects are further enhanced upon attaching the gold(i) triphenylphosphine moiety to the organometallic Pt compound. Remarkably, these novel metal species are able to overcome nearly complete resistance to cisplatin. Significant mechanistic insight into the study compounds was gained after investigating their reactions with a few representative biomolecules by electrospray mass spectrometry and X-ray crystallography. The obtained results are comprehensively discussed.


    Organizational Affiliation

    Department of Chemical Sciences, University of Naples Federico II, via Cintia, 80126, Napoli, Italy and CNR Institute of Biostructures and Bioimges, Via Mezzocannone 16, 80100, Napoli, Italy.,Department of Health Sciences, Section of Clinical Pharmacology and Oncology, University of Florence, viale Pieraccini 6, 50139 Firenze, Italy.,Department of Chemical Sciences, University of Naples Federico II, via Cintia, 80126, Napoli, Italy.,Laboratory of Metals in Medicine, Department of Chemistry, University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy. luigi.messori@unifi.it.,Department of Chemistry and Pharmacy, University of Sassari, via Vienna 2, 07100 Sassari, Italy. cinellu@uniss.it and CIRCC, Consorzio Interuniversitario Reattività Chimica e Catalisi, Università di Bari, Via Celso Ulpiani 27, 70126 Bari, Italy.,Department of Chemistry and Pharmacy, University of Sassari, via Vienna 2, 07100 Sassari, Italy. cinellu@uniss.it.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ribonuclease pancreatic
A, B
124Bos taurusMutation(s): 0 
Gene Names: RNASE1 (RNS1)
EC: 4.6.1.18
Find proteins for P61823 (Bos taurus)
Go to Gene View: RNASE1
Go to UniProtKB:  P61823
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PT
Query on PT

Download SDF File 
Download CCD File 
A
PLATINUM (II) ION
Pt
HRGDZIGMBDGFTC-UHFFFAOYSA-N
 Ligand Interaction
DMS
Query on DMS

Download SDF File 
Download CCD File 
A
DIMETHYL SULFOXIDE
C2 H6 O S
IAZDPXIOMUYVGZ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.192 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 100.398α = 90.00
b = 32.768β = 89.82
c = 72.540γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
PHASERphasing
HKL-2000data reduction
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2015-10-08 
  • Released Date: 2015-12-09 
  • Deposition Author(s): Merlino, A.

Revision History 

  • Version 1.0: 2015-12-09
    Type: Initial release
  • Version 1.1: 2016-01-13
    Type: Database references