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Effect of Membrane Lipid Composition on the Allosteric Inhibition by Sodium of the (Ca²⁺)-Adenosine Triphosphatase from Escherichia coli

^a Laboratorio de Microbiología, Departamento de Química Biológica, Facultad de Ciencias Químicas, Cuidad Universitaria, Córdoba, Argentina

ABSTRACT

The allosteric inhibition by sodium of the (Ca²⁺)-adenosine triphosphatase (EC 3.6.1.3) from Escherichia coli was found to be dependent on the lipid composition of the cell membrane.

¹ Present address: Instituto de Química Biológica, Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, S. M. De Tucumán, Argentina.

² Present address: Departamento de Industrias Farmacéuticas, Facultad de Bioquímica y Farmacia, Universidad de Buenos Aires, Junín 956, Buenos Aires, Argentina.