7CK0
Room temperature structure of glucose isomerase delivered in lard by serial millisecond crystallography
Summary for 7CK0
| Entry DOI | 10.2210/pdb7ck0/pdb |
| Descriptor | Xylose isomerase, MAGNESIUM ION (3 entities in total) |
| Functional Keywords | glucose isomerase, serial crystallography, serial millisecond crystallography, serial synchrotron crystallography, lard, delivery medium, isomerase |
| Biological source | Streptomyces rubiginosus |
| Total number of polymer chains | 1 |
| Total formula weight | 43331.91 |
| Authors | Nam, K.H. (deposition date: 2020-07-15, release date: 2020-11-18, Last modification date: 2023-11-29) |
| Primary citation | Nam, K.H. Lard Injection Matrix for Serial Crystallography. Int J Mol Sci, 21:-, 2020 Cited by PubMed Abstract: Serial crystallography (SX) using X-ray free electron laser or synchrotron X-ray allows for the determination of structures, at room temperature, with reduced radiation damage. Moreover, it allows for the study of structural dynamics of macromolecules using a time-resolved pump-probe, as well as mix-and-inject experiments. Delivering a crystal sample using a viscous medium decreases sample consumption by lowering the flow rate while being extruded from the injector or syringe as compared to a liquid jet injector. Since the environment of crystal samples varies, continuous development of the delivery medium is important for extended SX applications. Herein, I report the preparation and characterization of a lard-based sample delivery medium for SX. This material was obtained using heat treatment, and then the soluble impurities were removed through phase separation. The lard injection medium was highly stable and could be injected via a syringe needle extruded at room temperature with a flow rate < 200 nL/min. Serial millisecond crystallography experiments were performed using lard, and the room temperature structures of lysozyme and glucose isomerase embedded in lard at 1.75 and 1.80 Å, respectively, were determined. The lard medium showed X-ray background scattering similar or relatively lower than shortenings and lipidic cubic phase; therefore, it can be used as sample delivery medium in SX experiments. PubMed: 32825186DOI: 10.3390/ijms21175977 PDB entries with the same primary citation |
| Experimental method | X-RAY DIFFRACTION (1.8 Å) |
Structure validation
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