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Related Experiment Video

Updated: Jul 11, 2026

Directed Assembly of Elastin-like Proteins into defined Supramolecular Structures and Cargo Encapsulation In Vitro
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Engineering a circularly permuted GFP scaffold for peptide presentation.

Matthias Paschke1, Christian Tiede, Wolfgang Höhne

  • 1Institut für Biochemie, Charité-Universitätsmedizin Berlin, Monbijoustrasse 20, D-10117 Berlin, Germany. mailto:paschke@jerini.de

Journal of Molecular Recognition : JMR
|October 9, 2007
PubMed
Summary
This summary is machine-generated.

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This study optimized a green fluorescent protein (GFP) scaffold to improve peptide aptamers for ligand binding. The enhanced scaffold successfully presented diverse peptides without compromising GFP function.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Protein Engineering

Background:

  • Peptide aptamers are valuable for ligand binding but suffer from flexibility, instability, and lack of detection signals.
  • Integrating peptides into protein scaffolds can enhance stability and function.
  • Circularly permuted green fluorescent protein (cpGFP) variants offer potential as stable scaffolds.

Purpose of the Study:

  • To optimize a circularly permuted green fluorescent protein (cpGFP) scaffold for improved peptide aptamer applications.
  • To assess the capacity of the optimized cpGFP scaffold to accommodate peptide insertions in different regions.
  • To evaluate the impact of peptide insertions on the scaffold's stability and fluorescent properties.

Main Methods:

  • Engineering and optimization of a circularly permuted green fluorescent protein (cpGFP) variant.

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  • Insertion of peptide sequences into three distinct regions of the cpGFP scaffold.
  • Characterization of the functional integrity and conformational support for inserted peptides within the scaffold.

    • Main Results:

    • The optimized cpGFP scaffold demonstrated successful integration of peptide insertions.
    • Peptides could be presented in three different regions, supporting varied conformations.
    • The scaffold maintained its functional integrity with diverse peptide repertoires without compromising GFP activity.

    Conclusions:

    • The optimized cpGFP scaffold is a promising platform for developing enhanced peptide aptamers.
    • This approach overcomes limitations of traditional peptide aptamers, enabling broader applications in molecular recognition and diagnostics.
    • The scaffold's ability to present diverse peptides in multiple orientations facilitates the engineering of novel binding agents.