Allosteric enzymes as biosensors for molecular diagnosis

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Biosensors are hybrid analytical devices that amplify signals generated from the specific interaction between a receptor and the analyte, through a biochemical mechanism. Biosensors use tissues, whole cells, artificial membranes or cell components like proteins or nucleic acids as receptors, coupled to a physicochemical signal transducer. Allosteric enzymes exhibit a catalytic activity that is modulated by specific effectors, through binding to receptor sites that are distinct from the active site. Several enzymes, catalyzing easily measurable reactions, have been engineered to allosterically respond to specific ligands, being themselves the main constituent of new-generation biosensors. The molecular basis, robustness and application of allosteric enzymatic biosensing are revised here. © 2003 Published by Elsevier B.V. on behalf of the Federation of European Biochemical Societies.
Original languageEnglish
Pages (from-to)169-172
JournalFEBS Letters
Publication statusPublished - 6 Nov 2003


  • Adaptive binding
  • Biosensor
  • Diagnosis
  • Molecular interaction
  • Protein engineering


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