6P5D image
Entry Detail
PDB ID:
6P5D
Title:
Photoactive Yellow Protein PYP 30ps
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2019-05-30
Release Date:
2019-09-18
Method Details:
Experimental Method:
Resolution:
1.60 Å
R-Value Free:
0.26
R-Value Work:
0.22
R-Value Observed:
0.22
Space Group:
P 63
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Photoactive yellow protein
Chain IDs:A
Chain Length:125
Number of Molecules:1
Biological Source:Halorhodospira halophila
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
60F A CYS modified residue
Primary Citation

Abstact

The European XFEL (EuXFEL) is a 3.4-km long X-ray source, which produces femtosecond, ultrabrilliant and spatially coherent X-ray pulses at megahertz (MHz) repetition rates. This X-ray source has been designed to enable the observation of ultrafast processes with near-atomic spatial resolution. Time-resolved crystallographic investigations on biological macromolecules belong to an important class of experiments that explore fundamental and functional structural displacements in these molecules. Due to the unusual MHz X-ray pulse structure at the EuXFEL, these experiments are challenging. Here, we demonstrate how a biological reaction can be followed on ultrafast timescales at the EuXFEL. We investigate the picosecond time range in the photocycle of photoactive yellow protein (PYP) with MHz X-ray pulse rates. We show that difference electron density maps of excellent quality can be obtained. The results connect the previously explored femtosecond PYP dynamics to timescales accessible at synchrotrons. This opens the door to a wide range of time-resolved studies at the EuXFEL.

Legend

Protein

Chemical

Disease

Primary Citation of related structures