Evidence map›Paper›PMID 12604589›Full record

ArticleThe Journal of cell biology2003

Tyrosine-phosphorylated and nonphosphorylated isoforms of alpha-dystrobrevin: roles in skeletal muscle and its neuromuscular and myotendinous junctions.

R Mark Grady, Mohammed Akaaboune, Alexander L Cohen, Margaret M Maimone, Jeff W Lichtman, Joshua R Sanes

Abstract read
In one paragraph

Article in The Journal of cell biology, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed
–field-weighted citation impact
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

49 citing papers in PubMed.

  1. Myotendinous Junction development and repair.Journal of orthopaedic translation · 2026
    Review
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  14. Sarcoglycan Alpha Mitigates Neuromuscular Junction Decline in Aged Mice by Stabilizing LRP4.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2018
    Article
  15. Review
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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.

R Mark GradyDept. of Pediatrics, Washington University School of Medicine, Pediatric Research Bldg., St. Louis, MO 63110, USA. grady@kids.wustl.edu
Mohammed Akaaboune
Alexander L Cohen
Margaret M Maimone
Jeff W Lichtman
Joshua R Sanes

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

alpha-Dystrobrevin (DB), a cytoplasmic component of the dystrophin-glycoprotein complex, is found throughout the sarcolemma of muscle cells. Mice lacking alphaDB exhibit muscular dystrophy, defects in maturation of neuromuscular junctions (NMJs) and, as shown here, abnormal myotendinous junctions (MTJs). In normal muscle, alternative splicing produces two main alphaDB isoforms, alphaDB1 and alphaDB2, with common NH2-terminal but distinct COOH-terminal domains. alphaDB1, whose COOH-terminal extension can be tyrosine phosphorylated, is concentrated at the NMJs and MTJs. alphaDB2, which is not tyrosine phosphorylated, is the predominant isoform in extrajunctional regions, and is also present at NMJs and MTJs. Transgenic expression of either isoform in alphaDB-/- mice prevented muscle fiber degeneration; however, only alphaDB1 completely corrected defects at the NMJs (abnormal acetylcholine receptor patterning, rapid turnover, and low density) and MTJs (shortened junctional folds). Site-directed mutagenesis revealed that the effectiveness of alphaDB1 in stabilizing the NMJ depends in part on its ability to serve as a tyrosine kinase substrate. Thus, alphaDB1 phosphorylation may be a key regulatory point for synaptic remodeling. More generally, alphaDB may play multiple roles in muscle by means of differential distribution of isoforms with distinct signaling or structural properties.

Indexed as

Dystrophin-Associated ProteinsAlternative SplicingAnimalsCytoskeletal ProteinsDisease Models, AnimalFemaleImmunohistochemistryMaleMembrane ProteinsMiceMice, KnockoutMicroscopy, ElectronMuscle, SkeletalMuscular Dystrophy, AnimalNeuromuscular JunctionPhosphorylationCytoskeletal ProteinsdystrobrevinDystrophin-Associated ProteinsMembrane ProteinsProtein IsoformsReceptors, CholinergicRecombinant Fusion ProteinsTyrosine

Identifiers

PMID12604589
PMCPMC2173352

What OpenQuestion holds

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LicenceCC BY-NC-SA
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.