Identification of Cyclin A Binders with a Fluorescent Peptide Sensor

  • Elena Pazos
  • José L. Mascareñas
  • M. Eugenio VázquezEmail author
Part of the Methods in Molecular Biology book series (MIMB, volume 1336)


A peptide sensor that integrates the 4-dimethylaminophthalimide (4-DMAP) fluorophore in a short cyclin A binding sequence displays a large fluorescence emission increase upon interacting with the cyclin A Binding Groove (CBG). Competitive displacement assays of this probe allow the straightforward identification of peptides that interact with the CBG, which could potentially block the recognition of CDK/cyclin A kinase substrates.

Key words

Competition titration Cyclin A Fluorescence Inhibitors Peptides Sensors 



We thank the support given by the Spanish grants SAF2010-20822-C02, CTQ2009-14431/BQU, Consolider Ingenio 2010 and the Xunta de Galicia INCITE09 209084PR, GRC2010/12, PGIDIT08CSA-047209PR. We also thank Prof. Anxo Vidal, from the Universidade de Santiago de Compostela, and Mar Orzáez and Enrique Pérez-Payá from Príncipe Felipe Research Centre in Valencia for their help with cyclin A expression. E. P. thanks the Xunta de Galicia for her postdoctoral contract.


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Copyright information

© Springer Science+Business Media, LLC 2016

Authors and Affiliations

  • Elena Pazos
    • 1
  • José L. Mascareñas
    • 1
  • M. Eugenio Vázquez
    • 1
    Email author
  1. 1.Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química OrgánicaUniversidade de Santiago de CompostelaSantiago de CompostelaSpain

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