Evidence map›Paper›PMID 11877461›Full record

ArticleThe Journal of cell biology2002

Identification of an adaptor-associated kinase, AAK1, as a regulator of clathrin-mediated endocytosis.

Sean D Conner, Sandra L Schmid

Registry-linked trialOpen access · bronzeAbstract read
In one paragraph

Article in The Journal of cell biology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04358614 (Baricitinib Therapy in COVID-19), which is not on this map. Cited by 158 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
158citing papers in PubMed, 2 pooled it
6.3field-weighted citation impact, top 2% 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.

NCT04358614 phase2 / phase3completednot on this mapstarted 2020, after this paper: background citation

Baricitinib Therapy in COVID-19: A Pilot Study on Safety and Clinical Impact

TypeinterventionalSponsorFabrizio CantiniRan2020 to 2020Enrolled12ConditionsCOVID, PneumoniaArmsBaricitinib 4 MG Oral Tablet
3 · Its place in the literature

Who cites it

158 citing papers in PubMed, 2 syntheses or guidelines pooled it, 323 citations in OpenAlex.

  1. Pooled it
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  13. Dynamic early recruitment of GAK-Hsc70 regulates coated pit maturation.Proceedings of the National Academy of Sciences of the United States of America · 2025
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  19. eLife · 2024
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98 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

2 authors at 1 institution in 1 country.

Sean D ConnerThe Scripps Research Institute, La Jolla, CA 92037, USA.
Sandra L Schmid
Scripps Research Institute · US

Funding

THE CLATHRIN COATED VESICLE CYCLER37MH061345 · NIMH · SCRIPPS RESEARCH INSTITUTE, THE · PI SCHMID, SANDRA L. · 2000 to 2009
$4.7M
DYNAMIN'S FUNCTION IN ENDOCYTOSISF32GM020632 · NIGMS · SCRIPPS RESEARCH INSTITUTE · PI CONNER, SEAN D · 2000 to 2002
$119k
NIGMS NIH HHS F32 GM020632NIGMS NIH HHS GM20632-01NIMH NIH HHS R37 MH061345NIMH NIH HHS R37-MH61345
6 · The paper itself

Abstract

The mu 2 subunit of the AP2 complex is known to be phosphorylated in vitro by a copurifying kinase, and it has been demonstrated recently that mu 2 phosphorylation is required for transferrin endocytosis (Olusanya, O., P.D. Andrews, J.R. Swedlow, and E. Smythe. 2001. Curr. Biol. 11:896-900). However, the identity of the endogenous kinase responsible for this phosphorylation is unknown. Here we identify and characterize a novel member of the Prk/Ark family of serine/threonine kinases, adaptor-associated kinase (AAK)1. We find that AAK1 copurifies with adaptor protein (AP)2 and that it directly binds the ear domain of alpha-adaptin in vivo and in vitro. In neuronal cells, AAK1 is enriched at presynaptic terminals, whereas in nonneuronal cells it colocalizes with clathrin and AP2 in clathrin-coated pits and at the leading edge of migrating cells. AAK1 specifically phosphorylates the mu subunit in vitro, and stage-specific assays for endocytosis show that mu phosphorylation by AAK1 results in a decrease in AP2-stimulated transferrin internalization. Together, these results provide strong evidence that AAK1 is the endogenous mu 2 kinase and plays a regulatory role in clathrin-mediated endocytosis. These results also lend support to the idea that clathrin-mediated endocytosis is controlled by cycles of phosphorylation/desphosphorylation.

Indexed as

Adaptor Protein Complex 2Adaptor Protein Complex alpha SubunitsAdaptor Proteins, Vesicular TransportAmino Acid SequenceAurora KinasesCarrier ProteinsCell MembraneClathrinCloning, MolecularCytoplasmic VesiclesDNA, ComplementaryEndocytosisHeLa CellsHippocampusHumansMembrane ProteinsAAK1 protein, humanAdaptor Protein Complex 2Adaptor Protein Complex alpha SubunitsAdaptor Proteins, Vesicular TransportAurora KinasesCarrier ProteinsClathrinDNA, ComplementaryMembrane ProteinsProtein Kinase Cprotein kinase NProtein Serine-Threonine Kinases

Identifiers

PMID11877461
PMCPMC2173317
OpenAlexW2158131682

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LicenceCC BY-NC-SA
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Registered trials

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.