학술논문

Capturing the sequence of events during the water oxidation reaction in photosynthesis using XFELs
Document Type
Source
FEBS Letters. 597(1):30-37
Subject
Photosynthesis
Photosystem II
serial crystallography
XFEL
Biology with specialization in Structural Biology
Biologi med inriktning mot strukturbiologi
Chemistry with specialization in Biophysics
Kemi med inriktning mot biofysik
Chemistry with specialization in Physical Chemistry
Kemi med inriktning mot fysikalisk kemi
Language
English
Abstract
Ever since the discovery that Mn was required for oxygen evolution in plants by Pirson in 1937 and the period-four oscillation in flash-induced oxygen evolution by Joliot and Kok in the 1970s, understanding of this process has advanced enormously using state-of-the-art methods. The most recent in this series of innovative techniques was the introduction of X-ray free-electron lasers (XFELs) a decade ago, which led to another quantum leap in the understanding in this field, by enabling operando X-ray structural and X-ray spectroscopy studies at room temperature. This review summarizes the current understanding of the structure of Photosystem II (PS II) and its catalytic centre, the Mn4CaO5 complex, in the intermediate Si (i = 0–4)-states of the Kok cycle, obtained using XFELs.