Evidence map›Paper›PMID 21528840›Full record

ArticleBiochemistry2011

Adding fingers to an engineered zinc finger nuclease can reduce activity.

Yuka Shimizu, Cem Şöllü, Joshua F Meckler, Alice Adriaenssens, Artem Zykovich, Toni Cathomen, David J Segal

Abstract read
In one paragraph

Article in Biochemistry, 2011. 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
2.7field-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, 38 citations in OpenAlex.

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  14. Monomeric site-specific nucleases for genome editing.Proceedings of the National Academy of Sciences of the United States of America · 2012
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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

7 authors at 2 institutions in 2 countries.

Yuka ShimizuGenome Center and Department of Biochemistry and Molecular Medicine, University of California, Davis, California 95616, United States.
Cem Şöllü
Joshua F Meckler
Alice Adriaenssens
Artem Zykovich
Toni Cathomen
David J Segal
University of California, Davis · USMedizinische Hochschule Hannover · DE

Funding

Staff InvestigatorsP30CA093373 · NCI · UNIVERSITY OF CALIFORNIA DAVIS · PI PRIMO N. LARA · 2002 to 2026
$84.9M
SEER - a novel method for the detection of genetic sequencesR01GM077403 · NIGMS · UNIVERSITY OF CALIFORNIA AT DAVIS · PI SEGAL, DAVID J · 2006 to 2010
$1.4M
NCI NIH HHS P30 CA093373NIGMS NIH HHS GM077403NIGMS NIH HHS R01 GM077403
6 · The paper itself

Abstract

Zinc finger nucleases (ZFNs) have been used to direct precise modifications of the genetic information in living cells at high efficiency. An important consideration in the design of ZFNs is the number of zinc fingers that are required for efficient and specific cleavage. We examined dimeric ZFNs composed of [1]+[1], [2]+[2], [3]+[3], [4]+[4], [5]+[5], and [6]+[6] zinc fingers, targeting 6, 12, 18, 24, 30, and 36 bp, respectively. We found that [1]+[1] and [2]+[2] fingers supported neither in vitro cleavage nor single-strand annealing in a cell-based recombination assay. An optimal ZFN activity was observed for [3]+[3] and [4]+[4] fingers. Surprisingly, [5]+[5] and [6]+[6] fingers exhibited significantly reduced activity. While the extra fingers were not found to dramatically increase toxicity, directly inhibit recombination, or perturb the ZFN target site, we demonstrate the ability of subsets of three fingers in six-finger arrays to bind independently to regions of the target site, possibly explaining the decrease in activity. These results have important implications for the design of new ZFNs, as they show that in some cases an excess of fingers may actually negatively affect the performance of engineered multifinger proteins. Maximal ZFN activity will require an optimization of both DNA binding affinity and specificity.

Indexed as

Base SequenceBinding SitesCells, CulturedEndonucleasesHumansKineticsModels, BiologicalMolecular Sequence DataProtein EngineeringZinc FingersEndonucleases

Identifiers

PMID21528840
PMCPMC3110833
OpenAlexW2079672385

What OpenQuestion holds

Textmetadata
LicenceTDM
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.