Evidence map›Paper›PMID 31964841›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2020

Spin-labeled nanobodies as protein conformational reporters for electron paramagnetic resonance in cellular membranes.

Laura Galazzo, Gianmarco Meier, M Hadi Timachi, Cedric A J Hutter, Markus A Seeger, Enrica Bordignon

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
9.0field-weighted citation impact, top 2% 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

21 citing papers in PubMed, 53 citations in OpenAlex.

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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

6 authors at 2 institutions in 2 countries.

Laura GalazzoFaculty of Chemistry and Biochemistry, Ruhr University Bochum, 44801 Bochum, Germany.ORCID 0000-0001-8440-1757
Gianmarco MeierInstitute of Medical Microbiology, University of Zürich, 8006 Zürich, Switzerland.
M Hadi TimachiFaculty of Chemistry and Biochemistry, Ruhr University Bochum, 44801 Bochum, Germany.
Cedric A J HutterInstitute of Medical Microbiology, University of Zürich, 8006 Zürich, Switzerland.
Markus A SeegerInstitute of Medical Microbiology, University of Zürich, 8006 Zürich, Switzerland m.seeger@imm.uzh.ch enrica.bordignon@rub.de.
Enrica BordignonFaculty of Chemistry and Biochemistry, Ruhr University Bochum, 44801 Bochum, Germany; m.seeger@imm.uzh.ch enrica.bordignon@rub.de.ORCID 0000-0003-2450-5161
Ruhr University Bochum · DEUniversity of Zurich · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Nanobodies are emerging tools in a variety of fields such as structural biology, cell imaging, and drug discovery. Here we pioneer the use of their spin-labeled variants as reporters of conformational dynamics of membrane proteins using DEER spectroscopy. At the example of the bacterial ABC transporter TM287/288, we show that two gadolinium-labeled nanobodies allow us to quantify, via analysis of the modulation depth of DEER traces, the fraction of transporters adopting the outward-facing state under different experimental conditions. Additionally, we quantitatively follow the interconversion from the outward- to the inward-facing state in the conformational ensemble under ATP turnover conditions. We finally show that the specificity of the nanobodies for the target protein allows the direct attainment of structural information on the wild-type TM287/288 expressed in cellular membranes without the need to purify or label the investigated membrane protein.

Indexed as

Adenosine TriphosphateATP-Binding Cassette TransportersBinding SitesBiocompatible MaterialsCell MembraneElectron Spin Resonance SpectroscopyGadoliniumMembrane ProteinsProtein BindingProtein ConformationSingle-Domain AntibodiesSpin LabelsAdenosine TriphosphateATP-Binding Cassette TransportersBiocompatible MaterialsGadoliniumMembrane ProteinsSingle-Domain AntibodiesSpin LabelsABC transportersDEEREPRnanobodyspin label

Identifiers

PMID31964841
PMCPMC7007536
OpenAlexW3001649868

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.