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The DOI matches its Crossref record; 61 of the 61 references it cites were found in a registry or an index.

In the light of directed evolution: Pathways of adaptive protein evolution

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Bloom, Jesse D., Arnold, Frances H.·2009·Proceedings of the National Academy of Sciences

Abstract

Directed evolution is a widely-used engineering strategy for improving the stabilities or biochemical functions of proteins by repeated rounds of mutation and selection. These experiments offer empirical lessons about how proteins evolve in the face of clearly-defined laboratory selection pressures. Directed evolution has revealed that single amino acid mutations can enhance properties such as catalytic activity or stability and that adaptation can often occur through pathways consisting of sequential beneficial mutations. When there are no single mutations that improve a particular protein property experiments always find a wealth of mutations that are neutral with respect to the laboratory-defined measure of fitness. These neutral mutations can open new adaptive pathways by at least 2 different mechanisms. Functionally-neutral mutations can enhance a protein's stability, thereby increasing its tolerance for subsequent functionally beneficial but destabilizing mutations. They can also lead to changes in “promiscuous” functions that are not currently under selective pressure, but can subsequently become the starting points for the adaptive evolution of new functions. These lessons about the coupling between adaptive and neutral protein evolution in the laboratory offer insight into the evolution of proteins in nature.

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Metadata

Authors
Bloom, J. D., & Arnold, F. H.
Venue
Proceedings of the National Academy of Sciences
Published
2009-06-16
Volume
106
Issue
supplement_1
Pages
9995-10000
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2047849624
Cited by
468
References
61
FWCI
22.81
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: In the light of directed evolution: Pathways of adaptive protein evolution. https://app.cochat.ai/papers/10.1073/pnas.0901522106
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Bloom, J. D., & Arnold, F. H. (2009). In the light of directed evolution: Pathways of adaptive protein evolution. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0901522106

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