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Statements

Subject Item
n2:RIV%2F61989592%3A15310%2F14%3A33150462%21RIV15-MSM-15310___
rdf:type
n14:Vysledek skos:Concept
rdfs:seeAlso
http://onlinelibrary.wiley.com/doi/10.1111/tpj.12402/pdf
dcterms: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.
dcterms: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
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
skos:notation
RIV/61989592:15310/14:33150462!RIV15-MSM-15310___
n3:aktivita
n20:S n20:P
n3:aktivity
P(EE2.3.20.0057), P(GA13-28093S), P(LO1204), S
n3:cisloPeriodika
4
n3:dodaniDat
n7:2015
n3:domaciTvurceVysledku
n5:3124789 n5:7740964 n5:5902126 n5:3702871 n5:9896821 n5:9384456 n5:9708790
n3:druhVysledku
n19:J
n3:duvernostUdaju
n17:S
n3:entitaPredkladatele
n4:predkladatel
n3:idSjednocenehoVysledku
47848
n3:idVysledku
RIV/61989592:15310/14:33150462
n3:jazykVysledku
n10:eng
n3:klicovaSlova
clear native electrophoresis, Hordeum vulgare, single particle electron microscopy, PSI-NDH supercomplex, cyclic electron transport
n3:klicoveSlovo
n9:Hordeum%20vulgare n9:PSI-NDH%20supercomplex n9:single%20particle%20electron%20microscopy n9:clear%20native%20electrophoresis n9:cyclic%20electron%20transport
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[BCB2F93D7528]
n3:nazevZdroje
Plant Journal
n3:obor
n18:CE
n3:pocetDomacichTvurcuVysledku
7
n3:pocetTvurcuVysledku
8
n3:projekt
n13:GA13-28093S n13:EE2.3.20.0057 n13:LO1204
n3:rokUplatneniVysledku
n7:2014
n3:svazekPeriodika
77
n3:tvurceVysledku
Kouřil, Roman Ilík, Petr Lenobel, René Strouhal, Ondřej Boekema, Egbert Chamrád, Ivo Nosek, Lukáš Šebela, Marek
n3:wos
000330907900007
s:issn
0960-7412
s:numberOfPages
9
n11:doi
10.1111/tpj.12402
n6:organizacniJednotka
15310