Evidence map›Paper›PMID 22031698›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2011

Resistance of Akt kinases to dephosphorylation through ATP-dependent conformational plasticity.

Tung O Chan, Jin Zhang, Ulrich Rodeck, John M Pascal, Roger S Armen, Maureen Spring, Calin D Dumitru, Valerie Myers, Xue Li, Joseph Y Cheung and 1 more

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 57 papers.

0numbers the graph read from it
0cells of the map it votes in
57citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

57 citing papers in PubMed, 90 citations in OpenAlex.

  1. PHLPP is neither a Phosphatase nor a Tumor Suppressor.BioEssays : news and reviews in molecular, cellular and developmental biology · 2026
    Review
  2. Isoform-specific regulation of PKM by acetylation.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  3. Review
  4. Article
  5. Article
  6. AKT1Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Structure of autoinhibited Akt1 reveals mechanism of PIPProceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  19. Article
  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

11 authors at 2 institutions in 2 countries.

Tung O ChanCenter for Translational Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, PA 19107, USA. tung.chan@KimmelCancerCenter.org
Jin Zhang
Ulrich Rodeck
John M Pascal
Roger S Armen
Maureen Spring
Calin D Dumitru
Valerie Myers
Xue Li
Joseph Y Cheung
Arthur M Feldman
Center for Translational Molecular Medicine · NLThomas Jefferson University · US

Funding

Targeted Cancer Therapeutics and Heart Failure: Mechanisms and Post-injury RepairP01HL091799 · NHLBI · THOMAS JEFFERSON UNIVERSITY · PI HOUSER, STEVEN R · 2008 to 2018
$23.1M
EXERCISE TRAINING IN POSTINFARCT HEARTR01HL058672 · NHLBI · WEIS CENTER FOR RESEARCH-GEISINGER CLINC · PI CHEUNG, JOSEPH Y · 1998 to 2012
$3.6M
Phospholemman and Cardiac ContractilityR01HL074854 · NHLBI · THOMAS JEFFERSON UNIVERSITY · PI CHEUNG, JOSEPH Y · 2005 to 2014
$2.8M
NHLBI NIH HHS HL 091799-01NHLBI NIH HHS HL 58672NHLBI NIH HHS HL 74854NHLBI NIH HHS P01 HL091799NHLBI NIH HHS R01 HL058672NHLBI NIH HHS R01 HL074854
6 · The paper itself

Abstract

Phosphorylation of a threonine residue (T308 in Akt1) in the activation loop of Akt kinases is a prerequisite for deregulated Akt activity frequently observed in neoplasia. Akt phosphorylation in vivo is balanced by the opposite activities of kinases and phosphatases. Here we describe that targeting Akt kinase to the cell membrane markedly reduced sensitivity of phosphorylated Akt to dephosphorylation by protein phosphatase 2A. This effect was amplified by occupancy of the ATP binding pocket by either ATP or ATP-competitive inhibitors. Mutational analysis revealed that R273 in Akt1 and the corresponding R274 in Akt2 are essential for shielding T308 in the activation loop against dephosphorylation. Thus, occupancy of the nucleotide binding pocket of Akt kinases enables intramolecular interactions that restrict phosphatase access and sustain Akt phosphorylation. This mechanism provides an explanation for the "paradoxical" Akt hyperphosphorylation induced by ATP-competitive inhibitor, A-443654. The lack of phosphatase resistance further contributes insight into the mechanism by which the human Akt2 R274H missense mutation may cause autosomal-dominant diabetes mellitus.

Indexed as

Adenosine TriphosphateAnimalsCell LineCell SurvivalDiabetes MellitusEnzyme InhibitorsHeLa CellsHumansLipidsModels, MolecularMolecular ConformationMutation, MissensePhosphorylationProtein ConformationProtein Phosphatase 2Proto-Oncogene Proteins c-aktAdenosine TriphosphateEnzyme InhibitorsLipidsProtein Phosphatase 2Proto-Oncogene Proteins c-akt

Identifiers

PMID22031698
PMCPMC3219155
OpenAlexW2108268983

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.