6QQD

Cryogenic temperature structure of Hen Egg White Lysozyme recorded after an accumulated dose of 10 MGy

Summary for 6QQD

• Entry DOI: 10.2210/pdb6qqd/pdb
• Descriptor: Lysozyme C, CHLORIDE ION (3 entities in total)
• Functional Keywords: lysozyme, disulphide bonds, radiation damage, hydrolase
• Biological source: Gallus gallus (Chicken)
• Total number of polymer chains: 1
• Total formula weight: 14543.88

Authors

Gotthard, G.,Aumonier, S.,Royant, A. (deposition date: 2019-02-18, release date: 2019-06-19, Last modification date: 2024-10-23)

Primary citation

Gotthard, G.,Aumonier, S.,De Sanctis, D.,Leonard, G.,von Stetten, D.,Royant, A.
Specific radiation damage is a lesser concern at room temperature.
Iucrj, 6:665-680, 2019

PubMed Abstract: Carrying out macromolecular crystallography (MX) experiments at cryogenic temperatures significantly slows the rate of global radiation damage, thus facilitating the solution of high-resolution crystal structures of macromolecules. However, cryo-MX experiments suffer from the early onset of so-called specific radiation damage that affects certain amino-acid residues and, in particular, the active sites of many proteins. Here, a series of MX experiments are described which suggest that specific and global radiation damage are much less decoupled at room temperature than they are at cryogenic temperatures. The results reported here demonstrate the interest in reviving the practice of collecting MX diffraction data at room temperature and allow structural biologists to favourably envisage the development of time-resolved MX experiments at synchrotron sources.

PubMed: 31316810
DOI: 10.1107/S205225251900616X

Experimental method

X-RAY DIFFRACTION (1.92 Å)