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Teoret. i eksperim. khimiya. 2006. Vol.42 No. 4. p. 210-216

Effect of Microenvironment and Conformation of Immobilized Ligand
on Its Interaction with Macromolecular Receptor


B. A. Snopok1, P. N. Boltovets1, F. J. Rowell2

1 V. E. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine
Prosp. Nauky, 41, Kyiv 03028, Ukraine. E-mail: b_snopok@yahoo.com

2 School of Health, Natural and Social Sciences, University of Sunderland, Fleming Building
Wharncliffe Street, Sunderland, SR1 3SD, UK

Simple statistical model of interaction between low-molecular weight immobilized ligands of the same type and macromolecular receptors was considered. On example of the interaction of the immobilized sulfamethoxazole with a selective antibody the adequacy of the proposed approach for establishment of the dependence of adsorption capacity of the surface on the surface density of the immobilized ligand and its charge state was shown using surface plasmon resonance.

Key word surface density, immunospecific interaction, biosensors, surface plasmon resonance, sulfamethoxazole.