PMID: 23275170

Authors:

Helliwell JR, Tanley SW

Title:

The crystal structure analysis of the relative binding of cisplatin and carboplatin in a mixture with histidine in a protein studied at 100 and 300 K with repeated X-ray irradiation.

Journal:

Acta Crystallogr D Biol Crystallogr. 2013 Jan;69(Pt 1):121-5. doi:, 10.1107/S090744491204423X. Epub 2012 Dec 20.

Abstract:

The anticancer agents cisplatin and carboplatin bind to histidine in a protein. This crystal structure study at data-collection temperatures of 100 and 300 K examines their relative binding affinities to a histidine side chain and the effect of a high X-ray radiation dose of up to approximately 1.8 MGy on the stability of the subsequent protein-Pt adducts. Cisplatin binding is visible at the histidine residue, but carboplatin binding is not. Five refined X-ray crystal structures are presented: one at 100 K as a reference and four at 300 K. The diffraction resolutions are 1.8, 2.0, 2.8, 2.9 and 3.5 A.