Crystal structure of the PsbQ protein of photosystem II from higher plants
نویسندگان
چکیده
منابع مشابه
Crystal structure of the PsbQ protein of photosystem II from higher plants.
The smallest extrinsic polypeptide of the water-oxidizing complex (PsbQ) was extracted and purified from spinach (Spinacia oleracea) photosystem II (PSII) membranes. It was then crystallized in the presence of Zn(2+) and its structure was determined by X-ray diffraction at 1.95-A resolution using the multi-wavelength anomalous diffraction method, with the zinc as the anomalous scatterer. The cr...
متن کاملPsbP protein, but not PsbQ protein, is essential for the regulation and stabilization of photosystem II in higher plants.
PsbP and PsbQ proteins are extrinsic subunits of photosystem II (PSII) and participate in the normal function of photosynthetic water oxidation. Both proteins exist in a broad range of the oxygenic photosynthetic organisms; however, their physiological roles in vivo have not been well defined in higher plants. In this study, we established and analyzed transgenic tobacco (Nicotiana tabacum) pla...
متن کاملStructure and dynamics of the N-terminal loop of PsbQ from photosystem II of Spinacia oleracea.
Infrared and Raman spectroscopy were applied to identify restraints for the structure determination of the 20 amino acid loop between two beta-sheets of the N-terminal region of the PsbQ protein of the oxygen evolving complex of photosystem II from Spinacia oleracea by restraint-based homology modeling. One of the initial models has shown a stable fold of the loop in a 20 ns molecular dynamics ...
متن کاملCrystal structure of the PsbP protein of photosystem II from Nicotiana tabacum.
PsbP is a membrane-extrinsic subunit of the water-oxidizing complex photosystem II (PS II). The evolutionary origin of PsbP has long been a mystery because it specifically exists in higher plants and green algae but not in cyanobacteria. We report here the crystal structure of PsbP from Nicotiana tabacum at a resolution of 1.6 A. Its structure is mainly composed of beta-sheet, and is not simila...
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ژورنال
عنوان ژورنال: EMBO reports
سال: 2003
ISSN: 1469-221X,1469-3178
DOI: 10.1038/sj.embor.embor923