5OER image
Deposition Date 2017-07-09
Release Date 2017-10-25
Last Version Date 2024-10-23
Entry Detail
PDB ID:
5OER
Keywords:
Title:
Hen egg-white lysozyme refined against 5000 9 keV diffraction patterns
Biological Source:
Source Organism:
Gallus gallus (Taxon ID: 9031)
Method Details:
Experimental Method:
Resolution:
1.90 Å
R-Value Free:
0.21
R-Value Work:
0.18
R-Value Observed:
0.18
Space Group:
P 43 21 2
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Lysozyme C
Gene (Uniprot):LYZ
Chain IDs:A
Chain Length:129
Number of Molecules:1
Biological Source:Gallus gallus
Primary Citation
Multi-wavelength anomalous diffraction de novo phasing using a two-colour X-ray free-electron laser with wide tunability.
Nat Commun 8 1170 1170 (2017)
PMID: 29079797 DOI: 10.1038/s41467-017-00754-7

Abstact

Serial femtosecond crystallography at X-ray free-electron lasers (XFELs) offers unprecedented possibilities for macromolecular structure determination of systems prone to radiation damage. However, de novo structure determination, i.e., without prior structural knowledge, is complicated by the inherent inaccuracy of serial femtosecond crystallography data. By its very nature, serial femtosecond crystallography data collection entails shot-to-shot fluctuations in X-ray wavelength and intensity as well as variations in crystal size and quality that must be averaged out. Hence, to obtain accurate diffraction intensities for de novo phasing, large numbers of diffraction patterns are required, and, concomitantly large volumes of sample and long X-ray free-electron laser beamtimes. Here we show that serial femtosecond crystallography data collected using simultaneous two-colour X-ray free-electron laser pulses can be used for multiple wavelength anomalous dispersion phasing. The phase angle determination is significantly more accurate than for single-colour phasing. We anticipate that two-colour multiple wavelength anomalous dispersion phasing will enhance structure determination of difficult-to-phase proteins at X-ray free-electron lasers.

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