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Structure and dynamics of the N-terminal loop of PsbQ from photosystem II of Spinacia oleracea

AuthorsRistvejová, Jaroslava; Kopecky, Vladimír; Sosová, Zofie; Balsera, Mónica ; Arellano, Juan B. ; Green, Michael; Ettrich, Rüdiger
KeywordsPhotosystem II
Spinacia oleracea
Molecular dynamics
Infrared spectroscopy
Raman spectroscopy
Issue DateJun-2006
PublisherLennarz, William J.
CitationBiochemical and Biophysical Research Communications 345:287-291
AbstractInfrared and Raman spectroscopy were applied to identify restraints for the structure determination of the 20 amino acid loop between two P-sheets of the N-terminal region of the PsbQ protein of the oxygen evolving complex of photosystem 11 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 simulation that is in accordance with spectroscopic data. Cleavage of the first 12 amino acids leads to a permanent drift in the root means square deviation of the protein backbone and induces major structural changes. (c) 2006 Elsevier Inc. All rights reserved.
Publisher version (URL)http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6WBK-4JTRM3J-4&_user=4221789&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000048559&_version=1&_urlVersion=0&_userid=4221789&md5=1667b23e764aae6d2b93752c0db48e3d
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