7AET

Pressure wave-exposed human hemoglobin: probe only data (3500 indexed images)

これはPDB形式変換不可エントリーです。

7AET の概要

• エントリーDOI: 10.2210/pdb7aet/pdb
• 分子名称: Hemoglobin subunit alpha, Hemoglobin subunit beta, PROTOPORPHYRIN IX CONTAINING FE, ... (5 entities in total)
• 機能のキーワード: xfel, sfx, high pressure crystallography, hemoglobin, oxygen transport
• 由来する生物種: Homo sapiens (Human); 詳細
• タンパク質・核酸の鎖数: 4
• 化学式量合計: 63948.18

構造登録者

Barends, T.R.M.,Schlichting, I. (登録日: 2020-09-18, 公開日: 2021-02-17, 最終更新日: 2024-05-15)

主引用文献

Grunbein, M.L.,Gorel, A.,Foucar, L.,Carbajo, S.,Colocho, W.,Gilevich, S.,Hartmann, E.,Hilpert, M.,Hunter, M.,Kloos, M.,Koglin, J.E.,Lane, T.J.,Lewandowski, J.,Lutman, A.,Nass, K.,Nass Kovacs, G.,Roome, C.M.,Sheppard, J.,Shoeman, R.L.,Stricker, M.,van Driel, T.,Vetter, S.,Doak, R.B.,Boutet, S.,Aquila, A.,Decker, F.J.,Barends, T.R.M.,Stan, C.A.,Schlichting, I.
Effect of X-ray free-electron laser-induced shockwaves on haemoglobin microcrystals delivered in a liquid jet.
Nat Commun, 12:1672-1672, 2021

PubMed Abstract: X-ray free-electron lasers (XFELs) enable obtaining novel insights in structural biology. The recently available MHz repetition rate XFELs allow full data sets to be collected in shorter time and can also decrease sample consumption. However, the microsecond spacing of MHz XFEL pulses raises new challenges, including possible sample damage induced by shock waves that are launched by preceding pulses in the sample-carrying jet. We explored this matter with an X-ray-pump/X-ray-probe experiment employing haemoglobin microcrystals transported via a liquid jet into the XFEL beam. Diffraction data were collected using a shock-wave-free single-pulse scheme as well as the dual-pulse pump-probe scheme. The latter, relative to the former, reveals significant degradation of crystal hit rate, diffraction resolution and data quality. Crystal structures extracted from the two data sets also differ. Since our pump-probe attributes were chosen to emulate EuXFEL operation at its 4.5 MHz maximum pulse rate, this prompts concern about such data collection.

PubMed: 33723266
DOI: 10.1038/s41467-021-21819-8

実験手法

X-RAY DIFFRACTION (2.53 Å)