The relationship of the cell surface to metabolism. XIII. The cation-binding properties of the yeast cell surface

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Abstract

The binding of exogenous bivalent and univalent cations by the yeast cell is rapid and reversible, obeying a simple mass-law equation. Bivalent cations, especially UO2++, are bound more firmly than are univalent cations. There are at least two species of binding sites, tentatively identified as phosphoryl and carboxyl groups. These are located at the periphery of the cell, isolated from endogenous cations by a permeability barrier.

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This paper is based on work performed under contract with the U. S. Atomic Energy Commission at the University of Rochester Atomic Energy Project, Rochester, N. Y.

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