title: Conditions for purification of proteins by free-flow zone electrophoresis.
abstract: The separation of proteins by free-flow zone electrophoresis is generally impaired by a number of secondary effects which cause spreading of the protein streams with resultant loss in resolution. A strategy is outlined, based on experimental observations and numerical modeling, which allows the operating conditions and separation chamber dimensions to be chosen so as to obtain complete separation of two proteins of known mobility. This approach takes into account some dispersive phenomena such as molecular diffusion, electroosmosis and residence time gradients. In some cases, the right operating conditions cannot be achieved on earth and electrophoresis separations in microgravity may then be justified.
authors.affiliation: Laboratoire de Génie Chimique, Université Paul Sabatier, Toulouse, France.
authors.forename: M J
authors.initials: MJ
authors.lastname: Clifton
authors.forename: N
authors.initials: N
authors.lastname: Jouve
authors.forename: H
authors.initials: H
authors.lastname: de Balmann
authors.forename: V
authors.initials: V
authors.lastname: Sanchez
mesh_terms: D004058:Diffusion; D004586:Electrophoresis; D015233:Models, Statistical; D011506:Proteins / Q000302:isolation & purification*
chemical_list: D011506:Proteins