This article is cited in 11 papers

SPECIAL ISSUE ON LASER DIAGNOSTICS IN BIOLOGY AND MEDICINE

Formation of dipole complexes in protein solutions with low concentrations of heavy metal ions: diagnostics by the method of laser radiation scattering

G. P. Petrova, Yu. M. Petrusevich, D. I. Ten

Lomonosov Moscow State University, Faculty of Physics

Abstract: The formation of macromolecular protein clusters is studied by the Rayleigh–Debye method of scattering of laser radiation in solutions containing salts of toxic heavy elements, such as lead, copper, and cadmium, at low concentrations. It is found that the mass of clusters is maximal in the region of the isoelectric point of a protein and increases with increasing the ionic strength of the solution. It is shown that clusters decompose upon heating solutions up to the temperature about of 40 °C.

PACS: 42.25.Dd, 42.62.Be

Received: 04.07.2002

 English version: Quantum Electronics, 2002, 32:10, 897–901

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