Evidence map›Paper›PMID 11296286›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2001

Ligand-independent oligomerization of cell-surface erythropoietin receptor is mediated by the transmembrane domain.

S N Constantinescu, T Keren, M Socolovsky, H Nam, Y I Henis, H F Lodish

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 92 papers.

0numbers the graph read from it
0cells of the map it votes in
92citing papers in PubMed
5.8field-weighted citation impact, top 3% 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

92 citing papers in PubMed, 266 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Frontiers in cell and developmental biology · 2022
    Review
  13. Article
  14. Review
  15. Article
  16. Review
  17. Review
  18. Article
  19. Article
  20. Article

32 more citing papers are in PubMed but not listed here.

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 3 institutions in 2 countries.

S N ConstantinescuWhitehead Institute for Biomedical Research, Nine Cambridge Center, Cambridge, MA 02142, USA.
T Keren
M Socolovsky
H Nam
Y I Henis
H F Lodish
Whitehead Institute for Biomedical Research · USMassachusetts Institute of Technology · USTel Aviv University · IL

Funding

TRANSCRIPTION FACTOR GATA-1 IN TERMINAL ERYTHROID DEVELOPMENTP01HL032262 · NHLBI · CHILDREN'S HOSPITAL BOSTON · PI ORKIN, STUART H · 1985 to 2021
$38.9M
NHLBI NIH HHS HL 32262NHLBI NIH HHS P01 HL032262
6 · The paper itself

Abstract

Binding of erythropoietin (Epo) to the Epo receptor (EpoR) is crucial for production of mature red cells. Although it is well established that the Epo-bound EpoR is a dimer, it is not clear whether, in the absence of ligand, the intact EpoR is a monomer or oligomer. Using antibody-mediated immunofluorescence copatching (oligomerizing) of epitope-tagged receptors at the surface of live cells, we show herein that a major fraction of the full-length murine EpoR exists as preformed dimers/oligomers in BOSC cells, which are human embryo kidney 293T-derived cells. This observed oligomerization is specific because, under the same conditions, epitope-tagged EpoR did not oligomerize with several other tagged receptors (thrombopoietin receptor, transforming growth factor beta receptor type II, or prolactin receptor). Strikingly, the EpoR transmembrane (TM) domain but not the extracellular or intracellular domains enabled the prolactin receptor to copatch with EpoR. Preformed EpoR oligomers are not constitutively active and Epo binding was required to induce signaling. In contrast to tyrosine kinase receptors (e.g., insulin receptor), which cannot signal when their TM domain is replaced by the strongly dimerizing TM domain of glycophorin A, the EpoR could tolerate the replacement of its TM domain with that of glycophorin A and retained signaling. We propose a model in which TM domain-induced dimerization maintains unliganded EpoR in an inactive state that can readily be switched to an active state by physiologic levels of Epo.

Indexed as

Amino Acid SequenceAnimalsBiopolymersCell LineCell MembraneFluorescent Antibody TechniqueLigandsMiceMolecular Sequence DataReceptors, ErythropoietinSignal TransductionBiopolymersLigandsReceptors, Erythropoietin

Identifiers

PMID11296286
PMCPMC31843
OpenAlexW1966481456

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.