Evidence map›Paper›PMID 22474382›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2012

Phosphorylation regulates human OCT4.

Justin Brumbaugh, Zhonggang Hou, Jason D Russell, Sara E Howden, Pengzhi Yu, Aaron R Ledvina, Joshua J Coon, James A Thomson

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed
4.4field-weighted citation impact, top 5% 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

66 citing papers in PubMed, 101 citations in OpenAlex.

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6 more citing papers are in PubMed but not listed here.

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 2 institutions in 1 country.

Justin BrumbaughDepartment of Biomolecular Chemistry, University of Wisconsin, Madison, WI 53706-1532, USA.
Zhonggang Hou
Jason D Russell
Sara E Howden
Pengzhi Yu
Aaron R Ledvina
Joshua J Coon
James A Thomson
University of Wisconsin–Madison · USMorgridge Institute for Research · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The transcription factor OCT4 is fundamental to maintaining pluripotency and self-renewal. To better understand protein-level regulation of OCT4, we applied liquid chromatography-MS to identify 14 localized sites of phosphorylation, 11 of which were previously unknown. Functional analysis of two sites, T234 and S235, suggested that phosphorylation within the homeobox region of OCT4 negatively regulates its activity by interrupting sequence-specific DNA binding. Mutating T234 and S235 to mimic constitutive phosphorylation at these sites reduces transcriptional activation from an OCT4-responsive reporter and decreases reprogramming efficiency. We also cataloged 144 unique phosphopeptides on known OCT4 interacting partners, including SOX2 and SALL4, that copurified during immunoprecipitation. These proteins were enriched for phosphorylation at motifs associated with ERK signaling. Likewise, OCT4 harbored several putative ERK phosphorylation sites. Kinase assays confirmed that ERK2 phosphorylated these sites in vitro, providing a direct link between ERK signaling and the transcriptional machinery that governs pluripotency.

Indexed as

Amino Acid SequenceBinding SitesBlotting, WesternCells, CulturedEmbryonic Stem CellsHEK293 CellsHumansImmunoprecipitationMitogen-Activated Protein Kinase 1Models, MolecularMolecular Sequence DataMutationOctamer Transcription Factor-3PhosphorylationProtein BindingProtein Structure, TertiaryMAPK1 protein, humanMitogen-Activated Protein Kinase 1Octamer Transcription Factor-3SALL4 protein, humanSerineSOX2 protein, humanSOXB1 Transcription FactorsThreonineTranscription Factors

Identifiers

PMID22474382
PMCPMC3358887
OpenAlexW2057473045

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.