Cited by 453Glycosylation and Glycoproteins ResearchCarbohydrate Chemistry and SynthesisViral Infectious Diseases and Gene Expression in Insects

c-Myc Is Glycosylated at Threonine 58, a Known Phosphorylation Site and a Mutational Hot Spot in Lymphomas

Open access
Chou, Teh-Ying, Hart, Gerald W., Dang, Chi V.·1995·Journal of Biological Chemistry

Abstract

c-Myc is a helix-loop leucine zipper phosphoprotein that heterodimerizes with Max and regulates gene transcription in cell proliferation, cell differentiation, and programmed cell death. Previously, we demonstrated that c-Myc is modified by O-linked N-acetylglucosamine (O-GlcNAc) within or nearby the N-terminal transcriptional activation domain (Chou, T.-Y., Dang, C.V., and Hart, G.W. (1995) Proc. Natl. Acad. Sci. U.S.A. 92, 4417-4421). In this paper, we identified the O-GlcNAc attachment site(s) on c-Myc. c-Myc purified from sf9 insect cells was trypsinized, and its GlcNAc moieties were enzymically labeled with [3H]galactose. The [3H]galactose-labeled glycopeptides were isolated by reverse phase high performance liquid chromatography and then subjected to gas-phase sequencing, manual Edman degradation, and laser desorption/ionization mass spectrometry. These analyses show that threonine 58, an in vivo phosphorylation site in the transactivation domain, is the major O-GlcNAc glycosylation site of c-Myc. Mutation of threonine 58, frequently found in retroviral v-Myc proteins and in human Burkitt and AIDS-related lymphomas, is associated with enhanced transforming activity and tumorigenicity. The reciprocal glycosylation and phosphorylation at this biologically significant amino acid residue may play an important role in the regulation of the functions of c-Myc.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1074/jbc.270.32.18961

Cites

39 of 39 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 2

  1. Chou, T.-Y., Dang, C. V., and Hart, G. W. (1995) Proc. Natl. Acad. Sci. U. S. A. 92,4417-4421
  2. Hart, G. W., Kelly, W. G., Blomberg, M. A., Roquemore, E. P., Dong, L.-Y. D., Kreppel, L., Chou, T.-Y., Snow, D., and Greis, K. (1993) in 44. Colloquium Mosbach 1993 Glyco-and Cell Biology, pp. 91-103, Springer-Verlag, Berlin

Cited by

Sorted by citations

Authors
Chou, T.-Y., Hart, G. W., & Dang, C. V.
Affiliations
  • Johns Hopkins University (US)
  • University of Alabama at Birmingham (US)
Corresponding author
Hart, Gerald W.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1995-08
Volume
270
Issue
32
Pages
18961-18965
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2060799932
Cited by
453
References
39
Citations by year
2026: 9 · 2025: 12 · 2024: 13 · 2023: 24 · 2022: 11 · 2021: 18 · 2020: 10 · 2019: 9 · 2018: 18 · 2017: 20 · 2016: 20 · 2015: 13 · 2014: 21 · 2013: 19 · 2012: 14
FWCI
3.97
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Cancer Institute (CA 57341, R01CA057341, CA-42486, R01CA042486)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Glycosylation and Glycoproteins Research
  • Physical Sciences › Chemistry › Organic Chemistry › Carbohydrate Chemistry and Synthesis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Viral Infectious Diseases and Gene Expression in Insects
Keywords
c-Myc, O-GlcNAcylation, protein phosphorylation, transactivation domain, lymphoma, Burkitt lymphoma, HIV-associated lymphoma, transforming activity, tumorigenicity
MeSH terms
Amino Acid Sequence, Animals, Glycosylation, Lymphoma, Molecular Sequence Data, Mutation, Phosphorylation, Recombinant Proteins, Threonine, Proto-Oncogene Proteins c-myc, Spodoptera

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