Evidence map›Paper›PMID 17130164›Full record

ArticleNucleic acids research2006

Sequence-dependent gating of an ion channel by DNA hairpin molecules.

Veronica S DeGuzman, Clarence C Lee, David W Deamer, Wenonah A Vercoutere

Open access · goldAbstract read
In one paragraph

Article in Nucleic acids research, 2006. 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
2.9field-weighted citation impact, top 10% 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, 49 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

4 authors at 3 institutions in 1 country.

Veronica S DeGuzmanAmes Associate, Life Sciences Division, NASA Ames Research Center, Moffett Field, CA, USA.
Clarence C Lee
David W Deamer
Wenonah A Vercoutere
Ames Research Center · USID Genomics (United States) · USUniversity of California, Santa Cruz · US

Funding

Electronic Sequencing in NanoporesR01HG003703 · NHGRI · HARVARD UNIVERSITY · PI BRANTON, DANIEL NONE, GOLOVCHENKO, JENE A · 2005 to 2014
$16.1M
NHGRI NIH HHS R01 HG003703
6 · The paper itself

Abstract

DNA hairpins produce ionic current signatures when captured by the alpha-hemolysin nano-scale pore under conditions of single molecule electrophoresis. Gating patterns produced by individual DNA hairpins when captured can be used to distinguish differences of a single base pair or even a single nucleotide [Vercoutere,W.A. et al. (2003) Nucleic Acids Res., 31, 1311-1318]. Here we investigate the mechanism(s) that may account for the ionic current gating signatures. The ionic current resistance profile of conductance states produced by DNA hairpin molecules with 3-12 bp stems showed a plateau in resistance between 10 and 12 bp, suggesting that hairpins with 10-12 bp stems span the pore vestibule. DNA hairpins with 9-12 bp stems produced gating signatures with the same relative conductance states. Systematic comparison of the conductance state dwell times and apparent activation energies for a series of 9-10 bp DNA hairpins suggest that the 3' and 5' ends interact at or near the limiting aperture within the vestibule of the alpha-hemolysin pore. The model presented may be useful in predicting and interpreting DNA detection using nanopore detectors. In addition, this well-defined molecular system may prove useful for investigating models of ligand-gated channels in biological membranes.

Indexed as

Ion Channel GatingBacterial ToxinsBase SequenceElectric ConductivityElectric ImpedanceHemolysin ProteinsIon ChannelsKineticsModels, MolecularNucleic Acid ConformationNucleotidesOligodeoxyribonucleotidesBacterial ToxinsHemolysin ProteinsIon ChannelsNucleotidesOligodeoxyribonucleotidesstaphylococcal alpha-toxin

Identifiers

PMID17130164
PMCPMC1702491
OpenAlexW2087102081

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.