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Update on pure translation display with unnatural amino acid incorporation
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Cell and Molecular Biology, Structure and Molecular Biology.
2012 (English)In: Methods in Molecular Biology, ISSN 1064-3745, Vol. 805, 349-365 p.Article, review/survey (Refereed) Published
Abstract [en]

The identification of peptide and protein ligands by directed evolution in vitro has been of enormous utility in molecular biology and biotechnology. However, the translation step in almost all polypeptide selection methods is performed in vivo or in crude extracts, restricting applications. These restrictions include a limited library size due to transformation efficiency, unwanted competing reactions in translation, and an inability to incorporate multiple unnatural amino acids (AAs) with high fidelity and efficiency. These restrictions can be addressed by "pure translation display" where the translation step is performed in a purified system. To date, all pure translation display selections have coupled genotype to phenotype in a ribosome display format, though other formats also should be practical. Here, we detail the original, proof-of-principle, pure-translation-display method because this version should be the most suitable for encoding multiple unnatural AAs per peptide product toward the goal of "peptidomimetic evolution." Challenges and progress toward this ultimate goal are discussed and are mainly associated with improving the efficiency of ribosomal polymerization of multiple unnatural AAs.

Place, publisher, year, edition, pages
2012. Vol. 805, 349-365 p.
National Category
Medical Biotechnology (with a focus on Cell Biology (including Stem Cell Biology), Molecular Biology, Microbiology, Biochemistry or Biopharmacy)
Research subject
Molecular Biology
Identifiers
URN: urn:nbn:se:uu:diva-189254DOI: 10.1007/978-1-61779-379-0_20OAI: oai:DiVA.org:uu-189254DiVA: diva2:581121
Available from: 2012-12-28 Created: 2012-12-28 Last updated: 2014-06-05Bibliographically approved

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Forster, Anthony C.

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