2026-02-16 理化学研究所,高輝度光科学研究センター,東北大学,京都大学

テープ搬送による試料導入システムでタンパク質の動的構造解析をわずかな試料で実現
<関連情報>
- https://www.riken.jp/press/2026/20260216_1/index.html
- https://journals.iucr.org/j/issues/2026/02/00/te5159/index.html
連続フェムト秒結晶構造解析のためのコンパクトなテープ駆動型サンプル供給システム
Compact tape-driven sample delivery system for serial femtosecond crystallography
Jungmin Kang,Yoshiaki Shimazu,Fangjia Luo,Ayumi Yamashita,Tomoyuki Tanaka,Yuichi Inubushi, Kensuke Tono, Nipawan Nuemket, Allen M. Orville, So Iwata, Eriko Nango and Makina Yabashi
Journal of Applied Crystallography Published:9 February 2026
DOI:https://doi.org/10.1107/S1600576726000063
We have developed a compact tape drive (CoT) with on-demand sample delivery for time-resolved serial femtosecond crystallography (SFX) experiments, which can deliver sample droplets and/or initiate reactions with a drop-on-drop strategy. Two disposable piezoelectric injectors are positioned in tandem along the tape to produce a queue of nanolitre-scale droplets. X-ray free-electron laser pulses arrive perpendicular to and pass through the broad face of the tape. The pulse is synchronized and aligned to the droplets, thereby enabling highly efficient SFX data collection. The tape transport speed and the delivery distance can be varied to control the mixing time from approximately 130 ms to tens of seconds. We conducted time-resolved SFX experiments utilizing a basic enzymatic reaction model of hen egg white lysozyme (HEWL) and N-acetyl-D-glucosamine (GlcNAc) to demonstrate the drop-on-drop capabilities of the CoT, and the full binding process of GlcNAc to HEWL was observed at 1.3–9.7 s.


