title: Membrane tension lowering induced by protein activity.
abstract: Using videomicroscopy we present measurements of the fluctuation spectrum of giant vesicles containing bacteriorhodopsin pumps. When the pumps are activated, we observe a significant increase of the fluctuations in the low wave vector region, which we interpret as due to a lowering of the effective tension of the membrane.
authors.affiliation: Institut Curie, Centre de Recherche; CNRS, UMR 168; Université Pierre et Marie Curie, Paris, F-75248 France.
authors.forename: M D
authors.initials: MD
authors.lastname: El Alaoui Faris
authors.forename: D
authors.initials: D
authors.lastname: Lacoste
authors.forename: J
authors.initials: J
authors.lastname: Pécréaux
authors.forename: J-F
authors.initials: JF
authors.lastname: Joanny
authors.forename: J
authors.initials: J
authors.lastname: Prost
authors.forename: P
authors.initials: P
authors.lastname: Bassereau
mesh_terms: D001436:Bacteriorhodopsins / Q000737:chemistry* / Q000378:metabolism; D001693:Biological Transport, Active; D002462:Cell Membrane / Q000737:chemistry / Q000378:metabolism; D018715:Microscopy, Video / Q000379:methods; D008956:Models, Chemical; D053835:Unilamellar Liposomes / Q000737:chemistry* / Q000378:metabolism
chemical_list: D053835:Unilamellar Liposomes; D001436:Bacteriorhodopsins