7A44 image
Entry Detail
PDB ID:
7A44
Title:
CO-bound sperm whale myoglobin measured by serial synchrotron crystallography
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2020-08-19
Release Date:
2021-04-07
Method Details:
Experimental Method:
Resolution:
1.75 Å
R-Value Free:
0.20
R-Value Work:
0.17
R-Value Observed:
0.17
Space Group:
P 21 21 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Myoglobin
Chain IDs:A
Chain Length:154
Number of Molecules:1
Biological Source:Physeter catodon
Primary Citation
Serial femtosecond and serial synchrotron crystallography can yield data of equivalent quality: A systematic comparison.
Sci Adv 7 ? ? (2021)
PMID: 33731353 DOI: 10.1126/sciadv.abf1380

Abstact

For the two proteins myoglobin and fluoroacetate dehalogenase, we present a systematic comparison of crystallographic diffraction data collected by serial femtosecond (SFX) and serial synchrotron crystallography (SSX). To maximize comparability, we used the same batch of micron-sized crystals, the same sample delivery device, and the same data analysis software. Overall figures of merit indicate that the data of both radiation sources are of equivalent quality. For both proteins, reasonable data statistics can be obtained with approximately 5000 room-temperature diffraction images irrespective of the radiation source. The direct comparability of SSX and SFX data indicates that the quality of diffraction data obtained from these samples is linked to the properties of the crystals rather than to the radiation source. Therefore, for other systems with similar properties, time-resolved experiments can be conducted at the radiation source that best matches the desired time resolution.

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