Ligand-regulated oligomerisation of allosterically interacting proteins

The binding of ligands to distinct sites at proteins or at protein clusters is often cooperative or anti-cooperative due to allosteric signalling between those sites. The allostery is usually attributed to a configurational change of the proteins from a relaxed to a configurationally different tense...

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Bibliographic Details
Published inSoft matter Vol. 14; no. 34; pp. 6961 - 6968
Main Authors Schaefer, Charley, de Bruijn, René A J, McLeish, Tom C B
Format Journal Article
LanguageEnglish
Published England Royal Society of Chemistry 2018
Subjects
Allosteric properties
Ligands
Polymerization
Proteins
Titration
Variations
Vibrations
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Summary:The binding of ligands to distinct sites at proteins or at protein clusters is often cooperative or anti-cooperative due to allosteric signalling between those sites. The allostery is usually attributed to a configurational change of the proteins from a relaxed to a configurationally different tense state. Alternatively, as originally proposed by Cooper and Dryden, a tense state may be achieved by merely restricting the thermal vibrations of the protein around its mean configuration. In this work, we provide theoretical tools to investigate fluctuation allostery using cooling and titration experiments in which ligands regulate dimerisation, or ring or chain formation. We discuss in detail how ligands may regulate the supramolecular (co)polymerisation of liganded and unliganded proteins.
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ISSN:1744-683X
1744-6848
DOI:10.1039/c8sm00943k