Evidence map›Paper›PMID 32269381›Full record

ArticleNature protocols2020

Generation of synthetic nanobodies against delicate proteins.

Iwan Zimmermann, Pascal Egloff, Cedric A J Hutter, Benedikt T Kuhn, Philipp Bräuer, Simon Newstead, Roger J P Dawson, Eric R Geertsma, Markus A Seeger

Open access · greenAbstract readEvaluation Study
In one paragraph

Article in Nature protocols, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 113 papers.

0numbers the graph read from it
0cells of the map it votes in
113citing papers in PubMed
12.4field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

113 citing papers in PubMed, 188 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Article
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  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Generalizable Direct Protein Sequencing With InstaNexus.Molecular & cellular proteomics : MCP · 2026
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. In Vitro Selection of Antibodies by Ribosome Display.Methods in molecular biology (Clifton, N.J.) · 2026
    Article
  19. Article
  20. Article

53 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 4 institutions in 3 countries.

Iwan ZimmermannInstitute of Medical Microbiology, University of Zurich, Zurich, Switzerland.ORCID http://orcid.org/0000-0003-3476-4749
Pascal EgloffInstitute of Medical Microbiology, University of Zurich, Zurich, Switzerland.
Cedric A J HutterInstitute of Medical Microbiology, University of Zurich, Zurich, Switzerland.ORCID http://orcid.org/0000-0002-8920-3343
Benedikt T KuhnInstitute of Biochemistry, Goethe University Frankfurt, Frankfurt am Main, Germany.ORCID http://orcid.org/0000-0002-5406-7994
Philipp BräuerDepartment of Biochemistry, University of Oxford, Oxford, UK.ORCID http://orcid.org/0000-0003-4127-2638
Simon NewsteadDepartment of Biochemistry, University of Oxford, Oxford, UK.ORCID http://orcid.org/0000-0001-7432-2270
Roger J P DawsonLinkster Therapeutics AG, Zurich, Switzerland.
Eric R GeertsmaInstitute of Biochemistry, Goethe University Frankfurt, Frankfurt am Main, Germany. geertsma@em.uni-frankfurt.de.ORCID http://orcid.org/0000-0002-2789-5444
Markus A SeegerInstitute of Medical Microbiology, University of Zurich, Zurich, Switzerland. m.seeger@imm.uzh.ch.ORCID http://orcid.org/0000-0003-1761-8571
University of Zurich · CHGoethe University Frankfurt · DEUniversity of Oxford · GBRoche (Switzerland) · CH

Funding

Medical Research Council MR/S021043/1Wellcome Trust 102890/Z/13/ZWellcome Trust 215519
6 · The paper itself

Abstract

Here, we provide a protocol to generate synthetic nanobodies, known as sybodies, against any purified protein or protein complex within a 3-week period. Unlike methods that require animals for antibody generation, sybody selections are carried out entirely in vitro under controlled experimental conditions. This is particularly relevant for the generation of conformation-specific binders against labile membrane proteins or protein complexes and allows selections in the presence of non-covalent ligands. Sybodies are especially suited for cases where binder generation via immune libraries fails due to high sequence conservation, toxicity or insufficient stability of the target protein. The procedure entails a single round of ribosome display using the sybody libraries encoded by mRNA, followed by two rounds of phage display and binder identification by ELISA. The protocol is optimized to avoid undesired reduction in binder diversity and enrichment of non-specific binders to ensure the best possible selection outcome. Using the efficient fragment exchange (FX) cloning method, the sybody sequences are transferred from the phagemid to different expression vectors without the need to amplify them by PCR, which avoids unintentional shuffling of complementary determining regions. Using quantitative PCR (qPCR), the efficiency of each selection round is monitored to provide immediate feedback and guide troubleshooting. Our protocol can be carried out by any trained biochemist or molecular biologist using commercially available reagents and typically gives rise to 10-30 unique sybodies exhibiting binding affinities in the range of 500 pM-500 nM.

Indexed as

BacteriophagesChemistry Techniques, SyntheticRibosomesSingle-Domain AntibodiesSingle-Domain Antibodies

Identifiers

PMID32269381
PMCPMC7617899
OpenAlexW3015865927

What OpenQuestion holds

Textmetadata
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.