Evidence map›Paper›PMID 11742985›Full record

ArticleThe EMBO journal2001

The non-receptor tyrosine kinase Syk is a target of Cbl-mediated ubiquitylation upon B-cell receptor stimulation.

N Rao, A K Ghosh, S Ota, P Zhou, A L Reddi, K Hakezi, B K Druker, J Wu, H Band

Open access · greenAbstract read
In one paragraph

Article in The EMBO journal, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed
3.2field-weighted citation impact, top 7% 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.

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

55 citing papers in PubMed, 133 citations in OpenAlex.

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  3. Rescuing natural killer cells from the cancer wilderness.Journal for immunotherapy of cancer · 2025
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  6. TULA Proteins in Men, Mice, Hens, and Lice: Welcome to the Family.International journal of molecular sciences · 2023
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  7. TULA-Family Regulators of Platelet Activation.International journal of molecular sciences · 2022
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  11. The regulators of BCR signaling during B cell activation.Blood science (Baltimore, Md.) · 2019
    Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Targeting the Spleen Tyrosine Kinase with Fostamatinib as a Strategy against Waldenström Macroglobulinemia.Clinical cancer research : an official journal of the American Association for Cancer Research · 2015
    Article
  18. Signaling mechanisms regulating B-lymphocyte activation and tolerance.Journal of molecular medicine (Berlin, Germany) · 2015
    Review
  19. Article
  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

9 authors at 1 institution in 1 country.

N RaoLymphocyte Biology Section, Division of Rheumatology, Immunology and Allergy, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
A K Ghosh
S Ota
P Zhou
A L Reddi
K Hakezi
B K Druker
J Wu
H Band
Harvard University Press · US

Funding

TYROSINE KINASE REGULATION VIA PROTEIN DEGRADATIONR01CA087986 · NCI · UNIVERSITY OF NEBRASKA MEDICAL CENTER · PI BAND, HAMID · 2000 to 2015
$4.2M
FUNCTIONAL DISSECTION OF CBLS TRANSFORMING DOMAINR01CA076118 · NCI · BRIGHAM AND WOMEN'S HOSPITAL · PI BAND, HAMID · 1998 to 2002
$713k
REGULATING TYROSINE KINASE SIGNALS IN BREAST CANCERR01CA075075 · NCI · BRIGHAM AND WOMEN'S HOSPITAL · PI BAND, HAMID · 1997 to 2001
$508k
NCI NIH HHS CA75075NCI NIH HHS CA76118NCI NIH HHS CA87986NCI NIH HHS R01 CA087986
6 · The paper itself

Abstract

The negative regulator Cbl functions as a ubiquitin ligase towards activated receptor tyrosine kinases and facilitates their transport to lysosomes. Whether Cbl ubiquitin ligase activity mediates its negative regulatory effects on cytoplasmic tyrosine kinases of the Syk/ZAP-70 family has not been addressed, nor is it known whether these kinases are regulated via ubiquitylation during lymphocyte B-cell receptor engagement. Here we show that B-cell receptor stimulation in Ramos cells induces the ubiquitylation of Syk tyrosine kinase which is inhibited by a dominant-negative mutant of Cbl. Intact tyrosine kinase-binding and RING finger domains of Cbl were found to be essential for Syk ubiquitylation in 293T cells and for in vitro Syk ubiquitylation. These same domains were also essential for Cbl-mediated negative regulation of Syk as measured using an NFAT-luciferase reporter in a lymphoid cell. Association with Cbl did not alter the kinase activity of Syk. Altogether, our results support an essential role for Cbl ubiquitin ligase activity in the negative regulation of Syk, and establish that ubiquitylation provides a mechanism of Cbl-mediated negative regulation of cytoplasmic targets.

Indexed as

Cell LineCysteine EndopeptidasesCysteine Proteinase InhibitorsEnzyme PrecursorsHumansIntracellular Signaling Peptides and ProteinsMultienzyme ComplexesOncogene Protein v-cblProteasome Endopeptidase ComplexProtein-Tyrosine KinasesReceptors, Antigen, B-CellRecombinant ProteinsRetroviridae Proteins, OncogenicSyk KinaseUbiquitinCysteine EndopeptidasesCysteine Proteinase InhibitorsEnzyme PrecursorsIntracellular Signaling Peptides and ProteinsMultienzyme ComplexesOncogene Protein v-cblProteasome Endopeptidase ComplexProtein-Tyrosine KinasesReceptors, Antigen, B-CellRecombinant ProteinsRetroviridae Proteins, OncogenicSyk KinaseSYK protein, humanUbiquitin

Identifiers

PMID11742985
PMCPMC125791
OpenAlexW1979617068

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.