Evidence map›Paper›PMID 10713158›Full record

ArticleMolecular and cellular biology2000

Modulation of DNA binding protein affinity directly affects target site demethylation.

I G Lin, T J Tomzynski, Q Ou, C L Hsieh

Open access · greenAbstract read
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 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
3.1field-weighted citation impact, top 8% 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

29 citing papers in PubMed, 64 citations in OpenAlex.

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  15. The importance of epigenetic alterations in the development of epstein-barr virus-related lymphomas.Mediterranean journal of hematology and infectious diseases · 2009
    Article
  16. Article
  17. Epigenetic reprogramming and induced pluripotency.Development (Cambridge, England) · 2009
    Review
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  20. Article
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 1 institution in 1 country.

I G LinDepartment of Urology and Department of Biochemistry and Molecular Biology, University of Southern California, Norris Cancer Center, Los Angeles, California 90033, USA.
T J Tomzynski
Q Ou
C L Hsieh
University of Southern California · US

Funding

IMPACT AND DYNAMICS OF DNA METHYLATION IN HUMAN CELLSR01GM054781 · NIGMS · WASHINGTON UNIVERSITY · PI HSIEH, CHIH-LIN · 1996 to 2004
$1.1M
NIGMS NIH HHS GM54781NIGMS NIH HHS R01 GM054781
6 · The paper itself

Abstract

It has recently been shown that in Xenopus, DNA demethylation at promoter regions may involve protein-DNA interactions, based on the specificity of the demethylated sites. Utilizing a stable episomal system in human cells, we recently mapped the sites and dissected the steps of demethylation at oriP sites bound by EBNA1 protein. Although it is clear that protein binding is required for demethylation of the oriP sites, it is uncertain whether this is a unique feature of the replication origin or whether it is a general phenomenon for all DNA sequences to which sequence-specific proteins are bound. In the present study, we utilize the well-defined Escherichia coli lac repressor/operator system in human cells to determine whether protein binding to methylated DNA, in a region that is neither a replication origin nor a promoter, can also lead to demethylation of the binding sites. We found that demethylation specified by protein binding is not unique to the replication origin or to the promoter. We also found that transcriptional activity does not influence demethylation of the lac operator. Isopropyl-beta-D-thiogalactopyranoside (IPTG), an inhibitor of the lac repressor, can prevent demethylation of the lac operator DNA sites and can modulate demethylation of the lac operator by affecting the binding affinity of the lac repressor. Using this system, a titration of protein binding can be done. This titration permits one to infer that protein binding site occupancy is the determinant of demethylation at DNA sites and permits a determination of how this process progresses over time.

Indexed as

DNA MethylationEscherichia coli ProteinsBacterial ProteinsCell LineDNA-Binding ProteinsEscherichia coliGene Expression RegulationHumansIsopropyl ThiogalactosideLac OperonLac RepressorsLuciferasesPlasmidsProtein BindingReplication OriginRepressor ProteinsBacterial ProteinsDNA-Binding ProteinsEscherichia coli ProteinsIsopropyl ThiogalactosideLacI protein, E coliLac RepressorsLuciferasesRepressor Proteins

Identifiers

PMID10713158
PMCPMC85401
OpenAlexW2164079940

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.