5JD2 image
Entry Detail
PDB ID:
5JD2
Title:
SFX structure of corestreptavidin-selenobiotin complex
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2016-04-15
Release Date:
2016-11-16
Method Details:
Experimental Method:
Resolution:
1.90 Å
R-Value Free:
0.19
R-Value Work:
0.16
R-Value Observed:
0.16
Space Group:
P 1 21 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Streptavidin
Chain IDs:A, B, C, D
Chain Length:120
Number of Molecules:4
Biological Source:Streptomyces avidinii
Ligand Molecules
Primary Citation
Selenium single-wavelength anomalous diffraction de novo phasing using an X-ray-free electron laser.
Nat Commun 7 13388 13388 (2016)
PMID: 27811937 DOI: 10.1038/ncomms13388

Abstact

Structural information about biological macromolecules near the atomic scale provides important insight into the functions of these molecules. To date, X-ray crystallography has been the predominant method used for macromolecular structure determination. However, challenges exist when solving structures with X-rays, including the phase problem and radiation damage. X-ray-free electron lasers (X-ray FELs) have enabled collection of diffraction information before the onset of radiation damage, yet the majority of structures solved at X-ray FELs have been phased using external information via molecular replacement. De novo phasing at X-ray FELs has proven challenging due in part to per-pulse variations in intensity and wavelength. Here we report the solution of a selenobiotinyl-streptavidin structure using phases obtained by the anomalous diffraction of selenium measured at a single wavelength (Se-SAD) at the Linac Coherent Light Source. Our results demonstrate Se-SAD, routinely employed at synchrotrons for novel structure determination, is now possible at X-ray FELs.

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Primary Citation of related structures