Article (Scientific journals)
Structural Basis for Plant Plasma Membrane Protein Dynamics and Organization into Functional Nanodomains
Gronnier, Julien; Crowet, Jean-Marc; Habenstein, Birgit et al.
2017In eLife, 6, p. 1-23
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Abstract :
[en] Plasma Membrane is the primary structure for adjusting to ever changing conditions. PM sub-compartmentalization in domains is thought to orchestrate signalling cascades. Yet, mechanisms governing membrane organization are mostly uncharacterized. The plant-specific proteins REMORINs are factors regulating hormonal crosstalk and host invasion. REMs are the best-characterized PM nanodomain markers targeted to the PM via an uncharacterized moiety called REMORIN C-terminal Anchor. By coupling biophysical methods, super-resolution microscopy and physiology, we decipher an original mechanism regulating the dynamic and organization of nanodomains. We showed that PM targeting is independent of the COP II-dependent secretory pathway and mediated by PI4P and sterol. REM-CA is an unconventional lipid-binding motif that confers nanodomain organization. Analyses of REM-CA mutants by single particle tracking demonstrate that mobility and supramolecular organization are critical for immunity. This study provides a unique mechanistic insight into how the tight control of spatial segregation is critical in the definition of PM domain necessary to support biological function.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Gronnier, Julien 
Crowet, Jean-Marc  ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Chimie des agro-biosystèmes
Habenstein, Birgit 
Nasir, Mehmet Nail  ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Chimie générale et organique
Bayle, Vincent
Hosy, Eric
Platre, Matthieu Pierre
Gouguet, Paul
Raffaele, Sylvain
Martinez, Denis
Grelard, Axelle
Loquet, Antoine
Simon-Plas, Françoise
Gerbeau-Pissot, Patricia
Der, Christophe
Bayer, Emmanuelle
Jaillais, Yvon
Deleu, Magali  ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Chimie des agro-biosystèmes
Germain, Veronique;  Université Bordeaux 1 > LBM
Lins, Laurence   ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Chimie des agro-biosystèmes
Mongrand, Sebastien ;  Université de Bordeaux > LBM
More authors (11 more) Less
 These authors have contributed equally to this work.
Language :
English
Title :
Structural Basis for Plant Plasma Membrane Protein Dynamics and Organization into Functional Nanodomains
Publication date :
July 2017
Journal title :
eLife
eISSN :
2050-084X
Publisher :
eLife Sciences Publications, Cambridge, United Kingdom
Volume :
6
Pages :
1-23
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 17 August 2017

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