5OER

Hen egg-white lysozyme refined against 5000 9 keV diffraction patterns

5OER の概要

• エントリーDOI: 10.2210/pdb5oer/pdb
• 分子名称: Lysozyme C, 10-((2R)-2-HYDROXYPROPYL)-1,4,7,10-TETRAAZACYCLODODECANE 1,4,7-TRIACETIC ACID, GADOLINIUM ATOM, ... (5 entities in total)
• 機能のキーワード: free-electron laser, experimental phasing, multiwavelength anomalous dispersion, hydrolase
• 由来する生物種: Gallus gallus (Chicken)
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 15477.57

構造登録者

Gorel, A.,Schlichting, I. (登録日: 2017-07-09, 公開日: 2017-10-25, 最終更新日: 2024-10-23)

主引用文献

Gorel, A.,Motomura, K.,Fukuzawa, H.,Doak, R.B.,Grunbein, M.L.,Hilpert, M.,Inoue, I.,Kloos, M.,Kovacsova, G.,Nango, E.,Nass, K.,Roome, C.M.,Shoeman, R.L.,Tanaka, R.,Tono, K.,Joti, Y.,Yabashi, M.,Iwata, S.,Foucar, L.,Ueda, K.,Barends, T.R.M.,Schlichting, I.
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

PubMed Abstract: 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.

PubMed: 29079797
DOI: 10.1038/s41467-017-00754-7

実験手法

X-RAY DIFFRACTION (1.9 Å)