4QY9

X-ray structure of the adduct between hen egg white lysozyme and Auoxo3, a cytotoxic gold(III) compound

PDB DOI: https://doi.org/10.2210/pdb4QY9/pdb

Classification: HYDROLASE
Organism(s): Gallus gallus
Expression System: Escherichia coli
Mutation(s): No

Deposited: 2014-07-24 Released: 2014-11-05
Deposition Author(s): Russo Krauss, I., Merlino, A.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.05 Å
R-Value Free: 0.289
R-Value Work: 0.185
R-Value Observed: 0.189

wwPDB Validation 3D Report Full Report

This is version 1.1 of the entry. See complete history.

Literature

Interactions of gold-based drugs with proteins: the structure and stability of the adduct formed in the reaction between lysozyme and the cytotoxic gold(iii) compound Auoxo3.

Russo Krauss, I., Messori, L., Cinellu, M.A., Marasco, D., Sirignano, R., Merlino, A.

(2014) Dalton Trans 43: 17483-17488

PubMed: 25340580 Search on PubMed
DOI: https://doi.org/10.1039/c4dt02332c
Primary Citation of Related Structures:
4QY9

PubMed Abstract:
The structure and stability of the adduct formed in the reaction between Auoxo3, a dinuclear gold(iii) compound, and the model protein hen egg white lysozyme (HEWL) are investigated by X-ray crystallography, UV-Vis absorption spectroscopy and circular dichroism (CD). It is found that Auoxo3 breaks down completely, undergoes reduction and produces reactive gold(i) species able to bind the protein and form stable derivatives. The behaviour of Auoxo3 is compared with that of two analogous gold(iii) complexes previously studied: a few significant differences are highlighted. The general implications of these new results for the mode of action of cytotoxic gold complexes are discussed.

Organizational Affiliation

Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, I-80126, Napoli, Italy. antonello.merlino@unina.it.

Macromolecule Content

Total Structure Weight: 15.12 kDa
Atom Count: 1,147
Modelled Residue Count: 129
Deposited Residue Count: 129
Unique protein chains: 1

Macromolecules

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(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Lysozyme C	A	129	Gallus gallus	Mutation(s): 0 Gene Names: LYZ EC: 3.2.1.17
UniProt
Find proteins for P00698 (Gallus gallus) Explore P00698 Go to UniProtKB: P00698
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	P00698
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
AU Query on AU Download Ideal Coordinates CCD File SDF format, chain I [auth A] SDF format, chain J [auth A] MOL2 format, chain I [auth A] MOL2 format, chain J [auth A]	I [auth A], J [auth A]	GOLD ION Au ZBKIUFWVEIBQRT-UHFFFAOYSA-N		Interactions Focus chain I [auth A] Focus chain J [auth A] Interactions & Density Focus chain I [auth A] Focus chain J [auth A]
EDO Query on EDO Download Ideal Coordinates CCD File SDF format, chain F [auth A] SDF format, chain G [auth A] MOL2 format, chain F [auth A] MOL2 format, chain G [auth A]	F [auth A], G [auth A]	1,2-ETHANEDIOL C₂ H₆ O₂ LYCAIKOWRPUZTN-UHFFFAOYSA-N		Interactions Focus chain F [auth A] Focus chain G [auth A] Interactions & Density Focus chain F [auth A] Focus chain G [auth A]
NO3 Query on NO3 Download Ideal Coordinates CCD File SDF format, chain B [auth A] SDF format, chain C [auth A] SDF format, chain D [auth A] SDF format, chain E [auth A] MOL2 format, chain B [auth A] MOL2 format, chain C [auth A] MOL2 format, chain D [auth A] MOL2 format, chain E [auth A]	B [auth A], C [auth A], D [auth A], E [auth A]	NITRATE ION N O₃ NHNBFGGVMKEFGY-UHFFFAOYSA-N		Interactions Focus chain B [auth A] Focus chain C [auth A] Focus chain D [auth A] Focus chain E [auth A] Interactions & Density Focus chain B [auth A] Focus chain C [auth A] Focus chain D [auth A] Focus chain E [auth A]
NA Query on NA Download Ideal Coordinates CCD File SDF format, chain H [auth A] MOL2 format, chain H [auth A]	H [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N		Interactions Focus chain H [auth A] Interactions & Density Focus chain H [auth A]