Journal of Microbiology

The Microbiological Society of Korea (한국미생물학회)
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Adsorption of $\textrm{Pb}_{2+}$ in the components of bacterial cell membrane

  • Kim, Mal-Nam (Department of Biology, Sangmyung Womens University)
  • Published : 1995.12.01
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Abstract

S. epidermidis cell was fractionated into cell wall, cell membrane and cytoplasm. The cell membrane adsorbed the most abundant $\textrm{Pb}_{2+}$ per unit dry weight of the three fractions tested. Adsorption behavior of $\textrm{Pb}_{2+}$ 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 $\textrm{Pb}_{2+}$ than triglycerides lacking any chargeable functional groups. Protein purified from cell membrane adsorbed larger amount of $\textrm{Pb}_{2+}$ than total native cell membrane or cell membrane lipid.

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