Reference : Subunit-subunit interactions and overall topology of the dimeric mitochondrial ATP synth...
Scientific journals : Article
Life sciences : Biochemistry, biophysics & molecular biology
http://hdl.handle.net/2268/37442
Subunit-subunit interactions and overall topology of the dimeric mitochondrial ATP synthase of Polytomella sp.
English
Cano-Estrada, A. [> > > >]
Vazquez-Acevedo, M. [> > > >]
Villavicencio-Queijeiro, A. [> > > >]
Figueroa-Martinez, F. [> > > >]
Miranda-Astudillo, H. [> > > >]
Cordeiro, Y. [> > > >]
Mignaco, J. A. [> > > >]
Foguel, D. [> > > >]
Cardol, Pierre mailto [Université de Liège - ULg > Département des sciences de la vie > Génétique >]
Lapaille, M. [> > > >]
Remacle, Claire mailto [Université de Liège - ULg > Département des sciences de la vie > Génétique >]
Wilkens, S. [> > > >]
Gonzalez-Halphen, D. [> > > >]
2010
Biochimica et Biophysica Acta-Bioenergetics
Elsevier Science
1797
1439-1448
Yes (verified by ORBi)
International
0005-2728
Amsterdam
[en] Mitochondrial F(1)F(0)-ATP synthase of chlorophycean algae is a dimeric complex of 1600kDa constituted by 17 different subunits with varying stoichiometries, 8 of them conserved in all eukaryotes and 9 that seem to be unique to the algal lineage (subunits ASA1-9). Two different models proposing the topological assemblage of the nine ASA subunits in the ATP synthase of the colorless alga Polytomella sp. have been put forward. Here, we readdressed the overall topology of the enzyme with different experimental approaches: detection of close vicinities between subunits based on cross-linking experiments and dissociation of the enzyme into subcomplexes, inference of subunit stoichiometry based on cysteine residue labelling, and general three-dimensional structural features of the complex as obtained from small-angle X-ray scattering and electron microscopy image reconstruction. Based on the available data, we refine the topological arrangement of the subunits that constitute the mitochondrial ATP synthase of Polytomella sp.
http://hdl.handle.net/2268/37442
10.1016/j.bbabio.2010.02.024
Copyright (c) 2010 Elsevier B.V. All rights reserved.

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