Time‐scale separation – Michaelis and Menten's old idea, still bearing fruit. (17th October 2013)

• Record Type: Journal Article
• Authors: Gunawardena, Jeremy
• Is Part Of: FEBS journal. Volume 281:Number 2(2014)
• Page Start: 473
• Page End: 488
• Publication Date: 2013-10-17
• Subjects: Biochemistry -- Periodicals; Molecular biology -- Periodicals; Pathology, Molecular -- Periodicals; 572
• DOI: 10.1111/febs.12532
• Languages: English
• ISSNs: 1742-464X

Abstract

<abstract abstract-type="main" id="febs12532-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p>Michaelis and Menten introduced to biochemistry the idea of time‐scale separation, in which part of a system is assumed to be operating sufficiently fast compared to the rest so that it may be taken to have reached a steady state. This allows, in principle, the fast components to be eliminated, resulting in a simplified description of the system's behaviour. Similar ideas have been widely used in different areas of biology, including enzyme kinetics, protein allostery, receptor pharmacology, gene regulation and post‐translational modification. However, the methods used have been independent and <italic>ad hoc</italic>. In the present study, we review the use of time‐scale separation as a means to simplify the description of molecular complexity and discuss recent work setting out a single framework that unifies these separate calculations. The framework offers new capabilities for mathematical analysis and helps to do justice to Michaelis and Menten's insights about individual enzymes in the context of multi‐enzyme biological systems.</p> </abstract>