Evidence map›Paper›PMID 21300294›Full record

ArticleStructure (London, England : 1993)2011

Realizing the allosteric potential of the tetrameric protein kinase A RIα holoenzyme.

Angela J Boettcher, Jian Wu, Choel Kim, Jie Yang, Jessica Bruystens, Nikki Cheung, Juniper K Pennypacker, Donald A Blumenthal, Alexandr P Kornev, Susan S Taylor

Open access · bronzeAbstract read
In one paragraph

Article in Structure (London, England : 1993), 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing 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

30 citing papers in PubMed, 48 citations in OpenAlex.

  1. N3A motifs in RIβ mediate allosteric crosstalk between cAMP and ATP in PKA activation.Protein science : a publication of the Protein Society · 2025
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  11. Switching of the folding-energy landscape governs the allosteric activation of protein kinase A.Proceedings of the National Academy of Sciences of the United States of America · 2018
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  16. Unidirectional allostery in the regulatory subunit RIα facilitates efficient deactivation of protein kinase A.Proceedings of the National Academy of Sciences of the United States of America · 2016
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  17. Statistical Mechanics of Allosteric Enzymes.The journal of physical chemistry. B · 2016
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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

10 authors at 4 institutions in 1 country.

Angela J BoettcherDepartment of Chemistry and Biochemistry, University of California at San Diego, La Jolla, CA 92093, USA.
Jian Wu
Choel Kim
Jie Yang
Jessica Bruystens
Nikki Cheung
Juniper K Pennypacker
Donald A Blumenthal
Alexandr P Kornev
Susan S Taylor
University of California San Diego · USHoward Hughes Medical Institute · USBaylor College of Medicine · USUniversity of Utah · US

Funding

Protein Kinase Regulatory Subunit I Directed MutagenesisR01GM034921 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI TAYLOR, SUSAN S. · 1985 to 2018
$7.2M
Protein Kinase: Primary Structure and cAMP InteractionsR01GM019301 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI TAYLOR, SUSAN S. · 1985 to 2013
$3.4M
Howard Hughes Medical InstituteNIGMS NIH HHS R01 GM019301NIGMS NIH HHS R01 GM034921
6 · The paper itself

Abstract

PKA holoenzymes containing two catalytic (C) subunits and a regulatory (R) subunit dimer are activated cooperatively by cAMP. While cooperativity involves the two tandem cAMP binding domains in each R-subunit, additional cooperativity is associated with the tetramer. Of critical importance is the flexible linker in R that contains an inhibitor site (IS). While the IS becomes ordered in the R:C heterodimer, the overall conformation of the tetramer is mediated largely by the N-Linker that connects the D/D domain to the IS. To understand how the N-Linker contributes to assembly of tetrameric holoenzymes, we engineered a monomeric RIα that contains most of the N-Linker, RIα(73-244), and crystallized a holoenzyme complex. Part of the N-linker is now ordered by interactions with a symmetry-related dimer. This complex of two symmetry-related dimers forms a tetramer that reveals novel mechanisms for allosteric regulation and has many features associated with full-length holoenzyme. A model of the tetrameric holoenzyme, based on this structure, is consistent with previous small angle X-ray and neutron scattering data, and is validated with new SAXS data and with an RIα mutation localized to a novel interface unique to the tetramer.

Indexed as

Allosteric RegulationAmino Acid SequenceAnimalsCatalytic DomainCyclic AMPCyclic AMP-Dependent Protein Kinase RIalpha SubunitEnzyme ActivationGene ExpressionHoloenzymesHumansKineticsModels, MolecularMolecular Sequence DataMutationProtein BindingProtein ConformationCyclic AMPCyclic AMP-Dependent Protein Kinase RIalpha SubunitHoloenzymesProtein SubunitsRecombinant Proteins

Identifiers

PMID21300294
PMCPMC3097484
OpenAlexW2001981673

What OpenQuestion holds

Textmetadata
LicenceTDM
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.