Evidence map›Paper›PMID 22887995›Full record

ArticleThe Journal of biological chemistry2012

Segregation of replicative DNA polymerases during S phase: DNA polymerase ε, but not DNA polymerases α/δ, are associated with lamins throughout S phase in human cells.

Markku Vaara, Harri Itkonen, Tomi Hillukkala, Zhe Liu, Heinz-Peter Nasheuer, Daniel Schaarschmidt, Helmut Pospiech, Juhani E Syväoja

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
0.9field-weighted citation impact, top 25% 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

16 citing papers in PubMed, 22 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

8 authors at 5 institutions in 3 countries.

Markku VaaraDepartment of Biology, University of Eastern Finland, Joensuu, Finland.
Harri Itkonen
Tomi Hillukkala
Zhe Liu
Heinz-Peter Nasheuer
Daniel Schaarschmidt
Helmut Pospiech
Juhani E Syväoja
University of Eastern Finland · FILeibniz Institute on Aging - Fritz Lipmann Institute (FLI) · DEOllscoil na Gaillimhe – University of Galway · IEUniversity of Konstanz · DEUniversity of Oulu · FI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

DNA polymerases (Pol) α, δ, and ε replicate the bulk of chromosomal DNA in eukaryotic cells, Pol ε being the main leading strand and Pol δ the lagging strand DNA polymerase. By applying chromatin immunoprecipitation (ChIP) and quantitative PCR we found that at G(1)/S arrest, all three DNA polymerases were enriched with DNA containing the early firing lamin B2 origin of replication and, 2 h after release from the block, with DNA containing the origin at the upstream promoter region of the MCM4 gene. Pol α, δ, and ε were released from these origins upon firing. All three DNA polymerases, Mcm3 and Cdc45, but not Orc2, still formed complexes in late S phase. Reciprocal ChIP of the three DNA polymerases revealed that at G(1)/S arrest and early in S phase, Pol α, δ, and ε were associated with the same nucleoprotein complexes, whereas in late S phase Pol ε and Pol α/δ were largely associated with distinct complexes. At G(1)/S arrest, the replicative DNA polymerases were associated with lamins, but in late S phase only Pol ε, not Pol α/δ, remained associated with lamins. Consistently, Pol ε, but not Pol δ, was found in nuclear matrix fraction throughout the cell cycle. Therefore, Pol ε and Pol α/δ seem to pursue their functions at least in part independently in late S phase, either by physical uncoupling of lagging strand maturation from the fork progression, or by recruitment of Pol δ, but not Pol ε, to post-replicative processes such as translesion synthesis or post-replicative repair.

Indexed as

CatalysisCell CycleChromatin ImmunoprecipitationDNA Polymerase IDNA Polymerase IIDNA Polymerase IIIDNA ReplicationGene Expression RegulationHeLa CellsHumansLaminsNucleoproteinsPolymerase Chain ReactionS PhaseSubcellular FractionsDNA Polymerase IDNA Polymerase IIDNA Polymerase IIILaminsNucleoproteins

Identifiers

PMID22887995
PMCPMC3460436
OpenAlexW2157442375

What OpenQuestion holds

Textmetadata
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.