STABLE: Protein-DNA fusion system for screening of combinatorial protein libraries in vitro

Nobuhide Doi, Hiroshi Yanagawa

Research output: Contribution to journalArticlepeer-review

100 Citations (Scopus)


We have developed a new method that permits the complete in vitro construction and selection of peptide or protein libraries. This method relies on an in vitro transcription/translation reaction compartmentalized in water in oil emulsions. In each emulsion compartment, streptavidin (STA)-fused polypeptides are synthesized and attached to the encoding DNA via its biotin label. The resulting protein-DNA fusion molecules recovered from the emulsion can be subjected to affinity selection based on the properties of the peptide portion, whose sequence can be determined from that of its DNA-tag. This method, named 'STABLE' (STA-biotin linkage in emulsions), should be useful for rapid in vitro evolution of proteins and for ligand-based selection of cDNA libraries. Copyright (C) 1999 Federation of European Biochemical Societies.

Original languageEnglish
Pages (from-to)227-230
Number of pages4
JournalFEBS Letters
Issue number2
Publication statusPublished - 1999 Aug 27
Externally publishedYes


  • Directed protein evolution
  • In vitro selection
  • In vitro transcription/translation
  • Streptavidin-biotin complex
  • Water in oil emulsion
  • cDNA library

ASJC Scopus subject areas

  • Biophysics
  • Structural Biology
  • Biochemistry
  • Molecular Biology
  • Genetics
  • Cell Biology


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