Consensus model of a cyanobacterial light-dependent protochlorophyllide oxidoreductase in its pigment-free apo-form and photoactive ternary complex
Consensus model of a cyanobacterial light-dependent protochlorophyllide oxidoreductase in its pigment-free apo-form and photoactive ternary complex
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蓝藻光依赖性原叶绿素氧化还原酶的无色素脱辅基形式和光活性三元复合物的共识模型
DOI:
10.1038/s42003-019-0590-4
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发表时间:
2019
影响因子:
5.9
通讯作者:
U. Krauss
中科院分区:
文献类型:
--
作者:
J. Schneidewind;F. Krause;M. Bocola;A.M. Stadler;K.E. Jaeger KE;U. Krauss
Photosynthetic organisms employ two different enzymes for the reduction of the C17 = C18 double bond of protochlorophyllide (Pchlide), yielding the chlorophyll precursor chlorophyllide. First, a nitrogenase-like, light-independent (dark-operative) Pchlide oxidoreductase and secondly, a light-dependent Pchlide oxidoreductase (LPOR). For the latter enzyme, despite decades of research, no structural information is available. Here, we use protein structure modelling, molecular dynamics (MD) simulations combined with multi-wavelength analytical ultracentrifugation (MWA-AUC) and small angle X-ray scattering (SAXS) experiments to derive a consensus model of the LPOR apoprotein and the substrate/cofactor/LPOR ternary complex. MWA-AUC and SAXS experiments independently demonstrate that the apoprotein is monomeric, while ternary complex formation induces dimerization. SAXS-guided modelling studies provide a full-length model of the apoprotein and suggest a tentative mode of dimerization for the LPOR ternary complex, supported by published cross-link constraints. Our study provides a first impression of the LPOR structural organization.
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影响因子:
5.1
作者:
C. Dahlin;H. Aronsson;H. Wilks;N. Lebedev;C. Sundqvist;M. Timko
通讯作者:
M. Timko
影响因子:
2.9
作者:
Lebedev, N;Karginova, O;Timko, MP
通讯作者:
Timko, MP
DOI:
10.1016/j.bbapap.2016.09.015
发表时间:
2016-12-01
影响因子:
3.2
作者:
Gabruk, Michal;Nowakowska, Zuzanna;Kruk, Jerzy
通讯作者:
Kruk, Jerzy
影响因子:
6.1
作者:
Petoukhov MV;Franke D;Shkumatov AV;Tria G;Kikhney AG;Gajda M;Gorba C;Mertens HD;Konarev PV;Svergun DI
通讯作者:
Svergun DI
DOI:
10.1002/anie.201409881
发表时间:
2015-01-26
期刊:
Angewandte Chemie (International ed. in English)
影响因子:
--
作者:
Heyes DJ;Hardman SJ;Hedison TM;Hoeven R;Greetham GM;Towrie M;Scrutton NS
通讯作者:
Scrutton NS