Evidence map›Paper›PMID 17908927›Full record

ArticleGenes & development2007

A role for AGL ubiquitination in the glycogen storage disorders of Lafora and Cori's disease.

Alan Cheng, Mei Zhang, Matthew S Gentry, Carolyn A Worby, Jack E Dixon, Alan R Saltiel

Open access · diamondAbstract read
In one paragraph

Article in Genes & development, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed, 1 pooled it
–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

56 citing papers in PubMed, 1 synthesis or guideline pooled it, 97 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Article
  6. Wasteosomes (Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  7. Non-lysine ubiquitylation: Doing things differently.Frontiers in molecular biosciences · 2022
    Review
  8. Article
  9. Review
  10. Article
  11. Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. Review
  17. Review
  18. Article
  19. The regulation of glycogenolysis in the brain.The Journal of biological chemistry · 2018
    Review
  20. Review
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 at 2 institutions in 1 country.

Alan ChengDepartment of Internal Medicine, Life Sciences Institute, University of Michigan Medical Center, Ann Arbor, Michigan 48109, USA.
Mei Zhang
Matthew S Gentry
Carolyn A Worby
Jack E Dixon
Alan R Saltiel
University of California, San Diego · USUniversity of Michigan–Ann Arbor · US

Funding

Hormonal Regulation of Glycogen SynthesisR01DK060597 · NIDDK · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI SALTIEL, ALAN R. · 2002 to 2010
$2.8M
Novel Model Systems Link Floridean Starch Metabolism to Lafora DiseaseR00NS061803 · NINDS · UNIVERSITY OF KENTUCKY · PI GENTRY, MATTHEW S. · 2008 to 2010
$696k
Use of Novel Model Systems Link Floridean Starch Metabolism to Lafora DiseaseK99NS061803 · NINDS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI GENTRY, MATTHEW S. · 2007 to 2008
$154k
NIDDK NIH HHS 2R01DK060597-06NIDDK NIH HHS R01 DK060597NINDS NIH HHS K99 NS061803NINDS NIH HHS R00 NS061803
6 · The paper itself

Abstract

Cori's disease is a glycogen storage disorder characterized by a deficiency in the glycogen debranching enzyme, amylo-1,6-glucosidase,4-alpha-glucanotransferase (AGL). Here, we demonstrate that the G1448R genetic variant of AGL is unable to bind to glycogen and displays decreased stability that is rescued by proteasomal inhibition. AGL G1448R is more highly ubiquitinated than its wild-type counterpart and forms aggresomes upon proteasome impairment. Furthermore, the E3 ubiquitin ligase Malin interacts with and promotes the ubiquitination of AGL. Malin is known to be mutated in Lafora disease, an autosomal recessive disorder clinically characterized by the accumulation of polyglucosan bodies resembling poorly branched glycogen. Transfection studies in HepG2 cells demonstrate that AGL is cytoplasmic whereas Malin is predominately nuclear. However, after depletion of glycogen stores for 4 h, approximately 90% of transfected cells exhibit partial nuclear staining for AGL. Furthermore, stimulation of cells with agents that elevate cAMP increases Malin levels and Malin/AGL complex formation. Refeeding mice for 2 h after an overnight fast causes a reduction in hepatic AGL levels by 48%. Taken together, these results indicate that binding to glycogen crucially regulates the stability of AGL and, further, that its ubiquitination may play an important role in the pathophysiology of both Lafora and Cori's disease.

Indexed as

AnimalsBinding SitesCarrier ProteinsCell LineGlucansGlycogenGlycogen Debranching Enzyme SystemGlycogen Storage DiseaseGlycogen Storage Disease Type IIIHumansLafora DiseaseMiceUbiquitinUbiquitin-Protein Ligases4 alpha-glucanotransferaseamylo-1,6-glucosidaseCarrier ProteinsGlucansGlycogenGlycogen Debranching Enzyme SystemNHLRC1 protein, humanpolyglucosanUbiquitinUbiquitin-Protein Ligases

Identifiers

PMID17908927
PMCPMC1993871
OpenAlexW2110601384

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.