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Engineering protein prenylation: an emerging tool for selective protein modification.

Sneha Venkatachalapathy1, Caitlin Lichtenfels2, Carston R Wagner2

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Biochemical Society Transactions
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PubMed
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Farnesyl transferase (FTase) enables precise protein modification by attaching isoprenoids. This review explores FTase strategies for creating advanced therapeutic proteins and biomolecular structures.

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biocatalysisbioconjugationenzymatic protein modificationfarnesylationfarnesyltransferasesite-specific labeling

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Protein Engineering

Background:

  • Prenyltransferases attach isoprenoids to proteins with C-terminal CaaX motifs.
  • Enzymes like farnesyl transferase (FTase) are key in this protein modification process.
  • The CaaX motif's variable residue (X) dictates substrate specificity for farnesylation and geranylgeranylation.

Purpose of the Study:

  • To review FTase-mediated protein modification strategies for assembling therapeutically valuable proteins.
  • To explore the potential of FTase-catalyzed bioconjugation for industrial biological applications.
  • To highlight the use of FTase in designing complex multimeric protein structures with enhanced functionality.

Main Methods:

  • Discussion of protein prenylation processes and FTase active site structure.
  • Exploration of FTase-catalyzed bioconjugation of monomeric proteins and peptides.
  • Examination of FTase mutagenesis strategies to expand substrate scope.

Main Results:

  • FTase-catalyzed bioconjugation offers efficiency and modularity for protein assembly.
  • This approach facilitates the creation of multimeric protein structures with improved stability and therapeutic potential.
  • Mutagenesis expands FTase's utility for diverse biotechnological and therapeutic applications.

Conclusions:

  • FTase-mediated protein modification is a powerful strategy for therapeutic protein development.
  • The modularity and efficiency of FTase bioconjugation support industrial biological applications.
  • Engineered FTases can accommodate diverse functional groups, broadening biotechnological applications.