Title Adsorption of Pb^2+ in the components of bacterial cell membrane
Author Kim, Mal Nam
Address Department of Biology, SangMyung Women's University
Bibliography Journal of Microbiology, 33(4),278-282, 1995,
DOI
Key Words Staphylococcus epidemidis, lead ion, adsorption, cell membrane, lipid protein
Abstract S. epidermidis cell was fractionated into cell wall, cell membrane and cytoplasm. The cell membrane adsorbed the most abundant Pb^2+ per unit dry weight of the three fractions tested. Adsorption behavior of Pb^2+ in lipid and protein, which are the main components of the cell membrane, indicated that phosphatidylethanolamine and phosphatidylinositol having phosphoryl group and gangliosides containing carboxyl groups adsorbed much more Pb^2+ than triglycerides lacking any chargeable functional groups. Protein purified from cell membrane adsorbed larger amount of Pb^2+ than total native cell membrane or cell membrane lipid.
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