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http://hdl.handle.net/1942/313
Title: | The Substrate-Depletion Error on the Multiple Michaelis-Menten Equation with and without an Added Linear Term in the Substrate Concentration | Authors: | Heirwegh, Karel P. M. Vermeir, Marc MOLENBERGHS, Geert |
Issue Date: | 1993 | Source: | Journal of Biochemical and Biophysical Methods, 27(2), p. 151-156 | Abstract: | Saturation curves for substrate interaction with an acceptor (enzyme, binding or carrier protein) are often analysed on the assumption that the amount of acceptor-bound substrate is negligible compare to its total amount. Analytical criteria permitting one to decide whether the assumption is justified or not for systems described by a single Michaelis-Menten equation have been derived previously. For more complicated systems, error formulae often cannot be obtained in closed form and, if obtainable, are unwieldy. How this more complicated problem can be tackled is shown for mixtures of acceptor sites described by a sum of several Michaelis-Menten terms, without or with an additional term for ‘non-specific’ uptake or binding. In particular, it is shown that the maximum error, for which simple analytical expressions are obtained, provides a valid criterion for assessing whether substrates depletion is negligible or not | Keywords: | substrate-depletion error; enzymic conversion; transport kinetics; equilibrium binding; receptor binding | Document URI: | http://hdl.handle.net/1942/313 | ISSN: | 0165-022X | DOI: | 10.1016/0165-022X(93)90059-W | ISI #: | A1993LX81500008 | Rights: | © 1993 Elsevier Science Publishers B.V. All rights reserved | Type: | Journal Contribution |
Appears in Collections: | Research publications |
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