Evidence map›Paper›PMID 19279001›Full record

ArticleThe Journal of biological chemistry2009

Retinoblastoma/p107/p130 pocket proteins: protein dynamics and interactions with target gene promoters.

Kristy R Stengel, Chellappagounder Thangavel, David A Solomon, Steve P Angus, Yi Zheng, Erik S Knudsen

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
3.0field-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

27 citing papers in PubMed, 40 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

6 authors at 4 institutions in 1 country.

Kristy R StengelKimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, USA.
Chellappagounder Thangavel
David A Solomon
Steve P Angus
Yi Zheng
Erik S Knudsen
Cincinnati Children's Hospital Medical Center · USThomas Jefferson University · USDuke University · USGeorgetown University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The retinoblastoma (RB) tumor suppressor and its family members, p107 and p130, function by repressing E2F transcription factor activity to limit the expression of genes required for cell cycle progression. Traditionally, it is thought that the RB family proteins repress E2F target gene expression through complexing with E2F at gene promoters. However, whereas chromatin immunoprecipitation experiments have demonstrated p107 and p130 at E2F-responsive promoters, RB chromatin association has not been reliably observed. Here we used green fluorescent protein-tagged proteins to rigorously explore the mechanism of RB-mediated transcriptional repression relative to its p107 and p130 family members. The use of live cell fluorescent imaging demonstrated that RB, p107, and p130 exhibit similar nuclear dynamics. Although these findings suggest a similar engagement with nuclear structures, chromatin immunoprecipitation approaches with multiple independent antibodies failed to detect the association of RB with target gene promoters. However, by employing antibodies directed against green fluorescent protein, we could utilize the same antibody to assess RB, p107, and p130 engagement. This approach demonstrated RB association with target gene promoters in a fashion analogous to p107 and p130. Extension of this technology demonstrated that direct RB phosphorylation disrupts promoter association to regulate transcription. Thus, RB is associated with promoters in a manner similar to p107/p130 and that association is modulated by phosphorylation during cell cycle progression.

Indexed as

BromodeoxyuridineCell Line, TumorChromatin ImmunoprecipitationCyclin AE2F Transcription FactorsFluorescence Recovery After PhotobleachingGene ExpressionGreen Fluorescent ProteinsHumansImmunoblottingMicroscopy, ConfocalPromoter Regions, GeneticProtein BindingRecombinant Fusion ProteinsRetinoblastoma-Like Protein p107Retinoblastoma-Like Protein p130BromodeoxyuridineCyclin AE2F Transcription FactorsGreen Fluorescent ProteinsRecombinant Fusion ProteinsRetinoblastoma-Like Protein p107Retinoblastoma-Like Protein p130Retinoblastoma Protein

Identifiers

PMID19279001
PMCPMC2740551
OpenAlexW2090936597

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.