Evidence map›Paper›PMID 11027262›Full record

ArticleMolecular and cellular biology2000

The nicking step in V(D)J recombination is independent of synapsis: implications for the immune repertoire.

K Yu, M R Lieber

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In one paragraph

Article in Molecular and cellular biology, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
4.3field-weighted citation impact, top 6% 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

33 citing papers in PubMed, 66 citations in OpenAlex.

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  8. The emerging diversity of transpososome architectures.Quarterly reviews of biophysics · 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

2 authors at 1 institution in 1 country.

K YuNorris Comprehensive Cancer Center and Departments of Pathology, University of Southern California School of Medicine, Los Angeles, CA 90089-9176, USA.
M R Lieber
University of Southern California · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In all of the transposition reactions that have been characterized thus far, synapsis of two transposon ends is required before any catalytic steps (strand nicking or strand transfer) occur. In V(D)J recombination, there have been inconclusive data concerning the role of synapsis in nicking. Synapsis between two 12-substrates or between two 23-substrates has not been ruled out in any studies thus far. Here we provide the first direct tests of this issue. We find that immobilization of signals does not affect their nicking, even though hairpinning is affected in a manner reflecting its known synaptic requirement. We also find that nicking is kinetically a unireactant enzyme-catalyzed reaction. Time courses are no different between nicking seen for a 12-substrate alone and a reaction involving both a 12- and a 23-substrate. Hence, synapsis is neither a requirement nor an effector of the rate of nicking. These results establish V(D)J recombination as the first example of a DNA transposition-type reaction in which catalytic steps begin prior to synapsis, and the results have direct implications for the order of the steps in V(D)J recombination, for the contribution of V(D)J recombination nicks to genomic instability, and for the diversification of the immune repertoire.

Indexed as

Recombination, GeneticAnimalsCatalysisCell LineDNA-Binding ProteinsDNA Transposable ElementsElectrophoresis, Polyacrylamide GelGenes, RAG-1Glutathione TransferaseHigh Mobility Group ProteinsHumansKineticsMiceNuclear ProteinsOligonucleotidesRecombinant Fusion ProteinsDNA-Binding ProteinsDNA Transposable ElementsGlutathione TransferaseHigh Mobility Group ProteinsNuclear ProteinsOligonucleotidesRAG2 protein, humanRag2 protein, mouseRecombinant Fusion ProteinsStreptavidinTransposasesV(D)J recombination activating protein 2

Identifiers

PMID11027262
PMCPMC86402
OpenAlexW2155375991

What OpenQuestion holds

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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.