Evidence map›Paper›PMID 31536327›Full record

ArticleACS nano2019

Resolving Chemical Modifications to a Single Amino Acid within a Peptide Using a Biological Nanopore.

Laura Restrepo-Pérez, Gang Huang, Peggy R Bohländer, Nathalie Worp, Rienk Eelkema, Giovanni Maglia, Chirlmin Joo, Cees Dekker

Erratum issuedAbstract read
In one paragraph

Article in ACS nano, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
–field-weighted citation impact
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

42 citing papers in PubMed.

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  11. The C-terminus is essential for the stability of the mycobacterial channel protein MspA.Protein science : a publication of the Protein Society · 2024
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors.

Laura Restrepo-PérezDepartment of Bionanoscience, Kavli Institute of Nanoscience , Delft University of Technology , van der Maasweg 9 , 2629 HZ Delft , The Netherlands.
Gang HuangGroningen Biomolecular Sciences & Biotechnology Institute , University of Groningen , 9747 AG Groningen , The Netherlands.
Peggy R BohländerDepartment of Chemical Engineering , Delft University of Technology , van der Maasweg 9 , 2629 HZ Delft , The Netherlands.
Nathalie WorpDepartment of Bionanoscience, Kavli Institute of Nanoscience , Delft University of Technology , van der Maasweg 9 , 2629 HZ Delft , The Netherlands.
Rienk EelkemaDepartment of Chemical Engineering , Delft University of Technology , van der Maasweg 9 , 2629 HZ Delft , The Netherlands.ORCID 0000-0002-2626-6371
Giovanni MagliaGroningen Biomolecular Sciences & Biotechnology Institute , University of Groningen , 9747 AG Groningen , The Netherlands.ORCID 0000-0003-2784-0811
Chirlmin JooDepartment of Bionanoscience, Kavli Institute of Nanoscience , Delft University of Technology , van der Maasweg 9 , 2629 HZ Delft , The Netherlands.ORCID 0000-0003-2803-0335
Cees DekkerDepartment of Bionanoscience, Kavli Institute of Nanoscience , Delft University of Technology , van der Maasweg 9 , 2629 HZ Delft , The Netherlands.ORCID 0000-0001-6273-071X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

While DNA sequencing is now amply available, fast, and inexpensive, protein sequencing remains a tremendous challenge. Nanopores may allow for developing a protein sequencer with single-molecule capabilities. As identification of 20 different amino acids currently presents an unsurmountable challenge, fingerprinting schemes are pursued, in which only a subset of amino acids is labeled and detected. This requires modification of amino acids with chemical structures that generate a distinct nanopore ionic current signal. Here, we use a model peptide and the fragaceatoxin C nanopore to characterize six potential tags for a fingerprinting approach using nanopores. We find that labeled and unlabeled proteins can be clearly distinguished and that sensitive detection is obtained for labels with a spectrum of different physicochemical properties such as mass (427-1275 Da), geometry, charge, and hydrophobicity. Additionally, information about the position of the label along the peptide chain can be obtained from individual current-blockade event features. The results represent an important advance toward the development of a single-molecule protein-fingerprinting device with nanopores.

Indexed as

NanoporesAmino AcidsAmino Acid SequenceCnidarian VenomsFluoresceinPeptidesAmino AcidsCnidarian VenomsFluoresceinfragaceatoxin CPeptidesamino acid labelingbiological nanoporesnanoporeprotein analysisprotein fingerprintingsingle-molecule protein sequencing

Identifiers

PMID31536327
PMCPMC6933820

What OpenQuestion holds

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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.