Photochemically induced dynamic nuclear polarization NMR on photosystem II: donor cofactor observed in entire plant
Photochemically induced dynamic nuclear polarization NMR on photosystem II: donor cofactor observed in entire plant
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光系统 II 上的光化学诱导动态核极化 NMR:在整个植物中观察到的供体辅因子
DOI:
10.1038/s41598-018-36074-z
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发表时间:
2018
影响因子:
4.6
通讯作者:
A. Alia
中科院分区:
文献类型:
--
作者:
G.J. Janssen;P. Bielytskyi;D.G. Artiukhin;J. Neugebauer;H.J.M. de Groot;J. Matysik;A. Alia
The solid-state photo-CIDNP (photochemically induced dynamic nuclear polarization) effect allows for increase of signal and sensitivity in magic-angle spinning (MAS) NMR experiments. The effect occurs in photosynthetic reaction centers (RC) proteins upon illumination and induction of cyclic electron transfer. Here we show that the strength of the effect allows for observation of the cofactors forming the spin-correlated radical pair (SCRP) in isolated proteins, in natural photosynthetic membranes as well as in entire plants. To this end, we measured entire selectively13C isotope enriched duckweed plants (Spirodela oligorrhiza) directly in the MAS rotor. Comparison of13C photo-CIDNP MAS NMR spectra of photosystem II (PS2) obtained from different levels of RC isolation, from entire plant to isolated RC complex, demonstrates the intactness of the photochemical machinery upon isolation. The SCRP in PS2 is structurally and functionally very similar in duckweed and spinach (Spinacia oleracea). The analysis of the photo-CIDNP MAS NMR spectra reveals a monomeric Chladonor. There is an experimental evidence for matrix involvement, most likely due to the axial donor histidine, in the formation of the SCRP. Data do not suggest a chemical modification of C-131carbonyl position of the donor cofactor.
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影响因子:
2.9
作者:
E. Schulten;J. Matysik;Alía;S. Kiihne;J. Raap;J. Lugtenburg;P. Gast;A. Hoff;H. D. de Groot
通讯作者:
H. D. de Groot
DOI:
--
发表时间:
1976
期刊:
Biochimica et Biophysica Acta
影响因子:
--
作者:
H. V. van Gorkom;M. Pulles;J. Haveman;G. A. den Haan
通讯作者:
G. A. den Haan
影响因子:
2.9
作者:
Smitha Surendran Thamarath;A. Alia;Eugenio Daviso;D. Mance;J. Golbeck;J. Matysik
通讯作者:
J. Matysik
DOI:
--
发表时间:
1988
期刊:
影响因子:
--
作者:
S. Styring;A. Rutherford
通讯作者:
A. Rutherford
DOI:
--
发表时间:
2003
期刊:
影响因子:
--
作者:
Alía;B. Hulsebosch;H. Gorkom;J. Raap;J. Lugtenburg;J. Matysik;H. D. Groot;P. Gast
通讯作者:
P. Gast