Cited by 260Protein Structure and DynamicsBiochemical and Structural Characterizationbioluminescence and chemiluminescence research

The DOI matches its Crossref record; 57 of the 57 references it cites were found in a registry or an index.

De novo design of modular and tunable protein biosensors

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Abstract

Naturally occurring protein switches have been repurposed for the development of biosensors and reporters for cellular and clinical applications 1. However, the number of such switches is limited, and reengineering them is challenging. Here we show that a general class of protein-based biosensors can be created by inverting the flow of information through de novo designed protein switches in which the binding of a peptide key triggers biological outputs of interest 2. The designed sensors are modular molecular devices with a closed dark state and an open luminescent state; analyte binding drives the switch from the closed to the open state. Because the sensor is based on the thermodynamic coupling of analyte binding to sensor activation, only one target binding domain is required, which simplifies sensor design and allows direct readout in solution. We create biosensors that can sensitively detect the anti-apoptosis protein BCL-2, the IgG1 Fc domain, the HER2 receptor, and Botulinum neurotoxin B, as well as biosensors for cardiac troponin I and an anti-hepatitis B virus antibody with the high sensitivity required to detect these molecules clinically. Given the need for diagnostic tools to track the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)3, we used the approach to design sensors for the SARS-CoV-2 spike protein and antibodies against the membrane and nucleocapsid proteins. The former, which incorporates a de novo designed spike receptor binding domain (RBD) binder 4, has a limit of detection of 15 pM and a luminescence signal 50-fold higher than the background level. The modularity and sensitivity of the platform should enable the rapid construction of sensors for a wide range of analytes, and highlights the power of de novo protein design to create multi-state protein systems with new and useful functions.

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Crossref · 10.1038/s41586-021-03258-z

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  • The modular nature of the miniprotein binders enables their rapid integration into designed diagnostic biosensors for both influenza and SARS-CoV-2 binders.

    “The modular nature of the miniprotein binders enables their rapid integration into designed diagnostic biosensors for both influenza and SARS-CoV-2 binders40.”

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Metadata

Authors
Quijano-Rubio, A., Yeh, H.-W., Park, J., Lee, H., Langan, R. A., Boyken, S. E., Lajoie, M. J., Cao, L., Chow, C. M., Miranda, M. C., Wi, J., Hong, H. J., Stewart, L., Oh, B.-H., & Baker, D.
Affiliations
  • University of Washington (US)
  • Korea Advanced Institute of Science and Technology (KR)
  • Kangwon National University (KR)
  • Howard Hughes Medical Institute (US)
Corresponding author
  • Oh, Byung-Ha
  • Baker, David
Venue
Nature
Published
2021-01-27
Volume
591
Issue
7850
Pages
482-487
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W3125484908
Cited by
260
References
57
Citations by year
2026: 34 · 2025: 51 · 2024: 43 · 2023: 42 · 2022: 58 · 2021: 31
FWCI
13.64
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • Howard Hughes Medical Institute
  • Washington Research Foundation
  • Open Philanthropy Project
  • LG Yeonam Cultural Foundation
  • National Institute on Aging (U19AG065156)
  • National Institute of Allergy and Infectious Diseases (U01AI151698, AI151698)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Biochemical and Structural Characterization
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › bioluminescence and chemiluminescence research
Keywords
de novo protein design, protein biosensors, protein switches, luminescent biosensors, HER2 receptor, botulinum neurotoxin B, cardiac troponin I, SARS-CoV-2 spike protein, spike protein receptor-binding domain, analyte binding
MeSH terms
SARS-CoV-2, Coronavirus Nucleocapsid Proteins, Coronavirus M Proteins, Antibodies, Viral, Botulinum Toxins, Hepatitis B virus, Immunoglobulin G, Phosphoproteins, Sensitivity and Specificity, Viral Matrix Proteins, Biosensing Techniques, Erb-b2 Receptor Tyrosine Kinases, Troponin I, Proto-Oncogene Proteins c-bcl-2, Luminescence, Limit of Detection, Spike Glycoprotein, Coronavirus

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