Cited by 311Metabolism, Diabetes, and CancerGlycogen Storage Diseases and MyoclonusProtein Kinase Regulation and GTPase Signaling

New Insights Into the Role and Mechanism of Glycogen Synthase Activation by Insulin

Lawrence, John C, Roach, Peter J·1997·Diabetes

Abstract

The metabolism of the storage polysaccharide glycogen is intimately linked with insulin action and blood glucose homeostasis. Insulin activates both glucose transport and glycogen synthase in skeletal muscle. The central issue of a long-standing debate is which of these two effects determines the rate of glycogen synthesis in response to insulin. Recent studies with transgenic animals indicate that, under appropriate conditions, each process can contribute to determining the extent of glycogen accumulation. Insulin causes stable activation of glycogen synthase by promoting dephosphorylation of multiple sites in the enzyme. A model linking this action to the mitogen-activated protein kinase signaling pathway via the phosphorylation of the regulatory subunit of glycogen synthase phosphatase gained widespread acceptance. However, the most recent evidence argues strongly against this mechanism. A newer model, in which insulin inactivates the enzyme glycogen synthase kinase-3 via the protein kinase B pathway, has emerged. Though promising, this model still does not completely explain the molecular basis for the insulin-mediated activation of glycogen synthase, which remains one of the many unknowns of insulin action.

Integrity signals

Registry

Crossref · 10.2337/diab.46.4.541

Cites

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cited by

Sorted by citations

Authors
Lawrence, J. C., & Roach, P. J.
Affiliations
  • University of Virginia (US)
  • Indiana University Indianapolis (US)
Venue
Diabetes
Published
1997-04-01
Volume
46
Issue
4
Pages
541-547
ISSN
  • 0012-1797 (ISSN-L)
  • 1939-327X
OpenAlex
W2140664543
Cited by
311
References
0
Citations by year
2026: 1 · 2025: 4 · 2024: 8 · 2023: 3 · 2022: 7 · 2021: 8 · 2020: 3 · 2019: 6 · 2018: 4 · 2017: 6 · 2016: 6 · 2015: 4 · 2014: 10 · 2013: 3 · 2012: 14
FWCI
7.00
Type
journal article
Language
en
Open access
closed
Locations
  • Diabetes (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (1zicar041189-01)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK28312, DK 27221, R01DK028312)
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (AR41189)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Health Sciences › Medicine › Rheumatology › Glycogen Storage Diseases and Myoclonus
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
Keywords
glycogen synthase, insulin signaling, glycogen synthesis, glycogen synthase kinase-3, Akt, mitogen-activated protein kinase, glycogen synthase phosphatase, glucose transport, skeletal muscle, blood glucose homeostasis
MeSH terms
Animals, Enzyme Activation, Glycogen, Glycogen Synthase, Humans, Insulin, Muscle, Skeletal

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review