5KJ9 | pdb_00005kj9

Anticancer activity of Ru- and Os(arene) compounds of a maleimide-functionalized bioactive pyridinecarbothioamide ligand

• PDB DOI: https://doi.org/10.2210/pdb5KJ9/pdb

• Classification: HYDROLASE
• Organism(s): Gallus gallus
• Mutation(s): No 


• Deposited: 2016-06-18 Released: 2016-07-06 
• Deposition Author(s): Sullivan, M.P., Christian, C.G., Goldstone, D.C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.20 Å
• R-Value Free: 
  0.196 (Depositor), 0.203 (DCC) 
• R-Value Work: 
  0.167 (Depositor), 0.174 (DCC) 
• R-Value Observed: 
  0.168 (Depositor) 

Starting Model: experimental

Literature

Anticancer activity of Ru- and Os(arene) compounds of a maleimide-functionalized bioactive pyridinecarbothioamide ligand.

Hanif, M., Moon, S., Sullivan, M.P., Movassaghi, S., Kubanik, M., Goldstone, D.C., Sohnel, T., Jamieson, S.M., Hartinger, C.G.

(2016) J Inorg Biochem 165: 100-107

• PubMed: 27470012 
• DOI: https://doi.org/10.1016/j.jinorgbio.2016.06.025
• Primary Citation Related Structures: 
  5KJ9


• PubMed Abstract: 
  

  With the aim of increasing the accumulation of Ru anticancer agents in the tumor, a targeted delivery strategy based on a maleimide anchor for the biological vector human serum albumin (HSA) was developed. A group of piano stool Ru- and Os(η ⁶ -arene) complexes carrying a maleimide-functionalized N-phenyl-2-pyridinecarbothioamide (PCA) ligand was designed allowing for covalent conjugation to biological thiols. The complexes were characterized by NMR spectroscopy, ESI-MS, elemental analysis and single-crystal X-ray diffraction analysis. The compounds were shown to undergo halido/aqua ligand exchange reactions in aqueous solution, depending mainly on the metal center and the nature of the halide. In vitro cytotoxicity studies revealed low potency which is explained by the observed high reactivity of the maleimide to the thiol of l-cysteine (Cys), while the metal center itself shows little affinity to amino acids of the model protein lysozyme.

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Organizational Affiliation: 
• School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand; School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
Auckland Cancer Society Research Centre, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand. Electronic address: [e-mail].

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 14.46 kDa 
• Atom Count: 1,132 
• Modeled Residue Count: 129 
• Deposited Residue Count: 129 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Lysozyme C	A	129	Gallus gallus	Mutation(s): 0  EC: 3.2.1.17
UniProt
Find proteins for P00698 (Gallus gallus) Explore P00698  Go to UniProtKB:  P00698

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
RU	C [auth A]	RUTHENIUM ION Ru BPEVHDGLPIIAGH-UHFFFAOYSA-N
NA	B [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.20 Å
• R-Value Free:  0.196 (Depositor), 0.203 (DCC) 
• R-Value Work:  0.167 (Depositor), 0.174 (DCC) 
• R-Value Observed: 0.168 (Depositor) 

Space Group: P 4₃ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 78.58	α = 90
b = 78.58	β = 90
c = 37.48	γ = 90

Software Package:

Software Name	Purpose
MOSFLM	data reduction
Aimless	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2016-07-06 
Deposition Author(s): Sullivan, M.P., Christian, C.G., Goldstone, D.C.

Revision History  

• Version 1.0: 2016-07-06
  Type: Initial release
  
• Version 1.1: 2016-08-10
  Changes: Database references
• Version 1.2: 2016-12-21
  Changes: Database references
• Version 1.3: 2017-11-22
  Changes: Data collection, Refinement description
• Version 1.4: 2023-09-27
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.5: 2024-11-20
  Changes: Structure summary