Evidence map›Paper›PMID 22024884›Full record

ArticleNature chemistry2011

A sequence-specific threading tetra-intercalator with an extremely slow dissociation rate constant.

Garen G Holman, Maha Zewail-Foote, Amy Rhoden Smith, Kenneth A Johnson, Brent L Iverson

Abstract read
In one paragraph

Article in Nature chemistry, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing 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

20 citing papers in PubMed.

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  20. DNA complexes: Durable binders.Nature chemistry · 2011
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

Garen G HolmanDepartment of Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712, USA.
Maha Zewail-Foote
Amy Rhoden Smith
Kenneth A Johnson
Brent L Iverson

Funding

Exploring Aromatic Donor-Acceptor Interactions in WaterR01GM069647 · NIGMS · UNIVERSITY OF TEXAS AUSTIN · PI IVERSON, BRENT L · 2005 to 2008
$987k
NIGMS NIH HHS GM-069647NIGMS NIH HHS R01 GM069647
6 · The paper itself

Abstract

A long-lived and sequence-specific ligand-DNA complex would make possible the modulation of biological processes for extended periods. For this purpose, we are investigating a polyintercalation approach to DNA recognition in which flexible chains of aromatic units thread back and forth repeatedly through the double helix. Here we describe the DNA-binding behaviour of a threading tetra-intercalator. Specific binding was observed on a relatively long DNA strand that strongly favoured a predicted 14 base-pair sequence. Kinetic studies revealed a multistep association process, with sequence specificity that primarily derives from large differences in dissociation rates. The rate-limiting dissociation rate constant of the tetra-intercalator complex dissociating from its preferred binding site was extremely slow, corresponding to a half-life of 16 days. This is one of the longest non-covalent complex half-lives yet reported and, to the best of our knowledge, the longest for a DNA-binding molecule.

Indexed as

Base SequenceDNAIntercalating AgentsKineticsNaphthalimidesNucleic Acid ConformationPeptidesamino acetamide-NDI-lysyl-beta-alanyl-beta-alanyl-beta-alanyl-NDI-lysyl-adipamide-lysyl-NDI-beta-alanyl-beta-alanyl-beta-alanyl-lysyl-NDI-amino acetamideDNAIntercalating AgentsNaphthalimidesPeptides

Identifiers

PMID22024884
PMCPMC3209807

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Registered trials

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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.