Optimizing Crystal Size of Photosystem II by Macroseeding: Toward Neutron Protein Crystallography.
Optimizing Crystal Size of Photosystem II by Macroseeding: Toward Neutron Protein Crystallography.
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通过大晶种法优化光系统II的晶体尺寸:迈向中子蛋白质晶体学。
DOI:
10.1021/acs.cgd.7b00878
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发表时间:
2018-01-03
影响因子:
3.8
通讯作者:
Zouni A
中科院分区:
文献类型:
--
作者:
Hussein R;Ibrahim M;Chatterjee R;Coates L;Müh F;Yachandra VK;Yano J;Kern J;Dobbek H;Zouni A
Photosystem II (PSII) catalyzes the photo-oxidation of water to molecular oxygen and protons. The water splitting reaction occurs inside the oxygen-evolving complex (OEC) via a Mn4CaO5 cluster. To elucidate the reaction mechanism, detailed structural information for each intermediate state of the OEC is required. Despite the current high-resolution crystal structure of PSII at 1.85 Å and other efforts to follow the structural changes of the Mn4CaO5 cluster using X-ray free electron laser (XFEL) crystallography in addition to spectroscopic methods, many details about the reaction mechanism and conformational changes in the catalytic site during water oxidation still remain elusive. In this study, we present a rarely found successful application of the conventional macroseeding method to a large membrane protein like the dimeric PSII core complex (dPSIIcc). Combining microseeding with macroseeding crystallization techniques allowed us to reproducibly grow large dPSIIcc crystals with a size of ~3 mm. These large crystals will help improve the data collected from spectroscopic methods like polarized extended X-ray absorption fine structure (EXAFS) and single crystal electron paramagnetic resonance (EPR) techniques and are a prerequisite for determining a three-dimensional structure using neutron diffraction.
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影响因子:
4.3
作者:
Fromme, P;Witt, HT
通讯作者:
Witt, HT
影响因子:
16.8
作者:
Guskov, Albert;Kern, Jan;Saenger, Wolfram
通讯作者:
Saenger, Wolfram
影响因子:
2.5
作者:
Ascone, I;Meyer-Klaucke, W;Murphy, L
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Murphy, L
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64.8
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Jordan, P;Fromme, P;Krauss, N
通讯作者:
Krauss, N
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3.5
作者:
Folea, I. Mihaela;Zhang, Pengpeng;Boekema, Egbert J.
通讯作者:
Boekema, Egbert J.