About: Structural characterization of a plant photosystem I and NAD(P)H dehydrogenase supercomplex

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://onlinelibrary.wiley.com/doi/10.1111/tpj.12402/pdf
Description	Cyclic electron transport (CET) around photosystem I (PSI) plays an important role in balancing the ATP/NADPH ratio and the photoprotection of plants. The NAD(P)H dehydrogenase complex (NDH) has a key function in one of the CET pathways. Current knowledge indicates that, in order to fulfill its role in CET, the NDH complex needs to be associated with PSI; however, until now there has been no direct structural information about such a supercomplex. Here we present structural data obtained for a plant PSI-NDH supercomplex. Electron microscopy analysis revealed that in this supercomplex two copies of PSI are attached to one NDH complex. A constructed pseudo-atomic model indicates asymmetric binding of two PSI complexes to NDH and suggests that the low-abundant Lhca5 and Lhca6 subunits mediate the binding of one of the PSI complexes to NDH. On the basis of our structural data, we propose a model of electron transport in the PSI-NDH supercomplex in which the association of PSI to NDH seems to be important for efficient trapping of reduced ferredoxin by NDH. Cyclic electron transport (CET) around photosystem I (PSI) plays an important role in balancing the ATP/NADPH ratio and the photoprotection of plants. The NAD(P)H dehydrogenase complex (NDH) has a key function in one of the CET pathways. Current knowledge indicates that, in order to fulfill its role in CET, the NDH complex needs to be associated with PSI; however, until now there has been no direct structural information about such a supercomplex. Here we present structural data obtained for a plant PSI-NDH supercomplex. Electron microscopy analysis revealed that in this supercomplex two copies of PSI are attached to one NDH complex. A constructed pseudo-atomic model indicates asymmetric binding of two PSI complexes to NDH and suggests that the low-abundant Lhca5 and Lhca6 subunits mediate the binding of one of the PSI complexes to NDH. On the basis of our structural data, we propose a model of electron transport in the PSI-NDH supercomplex in which the association of PSI to NDH seems to be important for efficient trapping of reduced ferredoxin by NDH. (en)
Title	Structural characterization of a plant photosystem I and NAD(P)H dehydrogenase supercomplex Structural characterization of a plant photosystem I and NAD(P)H dehydrogenase supercomplex (en)
skos:prefLabel	Structural characterization of a plant photosystem I and NAD(P)H dehydrogenase supercomplex Structural characterization of a plant photosystem I and NAD(P)H dehydrogenase supercomplex (en)
skos:notation	RIV/61989592:15310/14:33150462!RIV15-MSM-15310___
http://linked.open...avai/riv/aktivita	P S
http://linked.open...avai/riv/aktivity	P(EE2.3.20.0057), P(GA13-28093S), P(LO1204), S
http://linked.open...iv/cisloPeriodika	4
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Nosek, Lukáš Strouhal, Ondřej Šebela, Marek Ilík, Petr Chamrád, Ivo Kouřil, Roman Lenobel, René
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Palackého v Olomouci / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	47848
http://linked.open...ai/riv/idVysledku	RIV/61989592:15310/14:33150462
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	clear native electrophoresis, Hordeum vulgare, single particle electron microscopy, PSI-NDH supercomplex, cyclic electron transport (en)
http://linked.open.../riv/klicoveSlovo	Hordeum vulgare PSI-NDH supercomplex cyclic electron transport single particle electron microscopy clear native electrophoresis
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[BCB2F93D7528]
http://linked.open...i/riv/nazevZdroje	Plant Journal
http://linked.open...in/vavai/riv/obor	CE
http://linked.open...ichTvurcuVysledku	7 (xsd:int)
http://linked.open...cetTvurcuVysledku	8 (xsd:int)
http://linked.open...vavai/riv/projekt	Progress and internationalization of biophysical research at Faculty of Science, Palacky University in Olomouc Udržitelný rozvoj výzkumu v Centru regionu Haná Impact of temperature and photosynthetically active radiation on dynamics of regulation of photosystem II function in higher plants
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	77
http://linked.open...iv/tvurceVysledku	Šebela, Marek Ilík, Petr Lenobel, René Chamrád, Ivo Strouhal, Ondřej Boekema, Egbert Kouřil, Roman Nosek, Lukáš
http://linked.open...ain/vavai/riv/wos	000330907900007
issn	0960-7412
number of pages	9 (xsd:int)
http://bibframe.org/vocab/doi	10.1111/tpj.12402
http://localhost/t...ganizacniJednotka	15310

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