Evidence map›Paper›PMID 7900999›Full record

ArticleThe EMBO journal1993

More potent transcriptional activators or a transdominant inhibitor of the HNF1 homeoprotein family are generated by alternative RNA processing.

I Bach, M Yaniv

Erratum issuedOpen access · bronzeAbstract readComparative Study
In one paragraph

Article in The EMBO journal, 1993. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
2.0field-weighted citation impact, top 14% 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

42 citing papers in PubMed, 128 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Structural properties of the HNF-1A transactivation domain.Frontiers in molecular biosciences · 2023
    Article
  5. Article
  6. Review
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

I BachUnité des Virus Oncogènes, UA 1644 du CNRS, Département des Biotechnologies, Institut Pasteur, Paris, France.
M Yaniv
Institut Pasteur · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We report the isolation of cDNAs from human liver encoding several isoforms of the hepatocyte nuclear factor homeoproteins HNF1 and vHNF1 generated by the differential use of polyadenylation sites and by alternative splicing. In the novel isoforms intron sequences that are excised in the previously described forms are translated in the same frame as exon sequences until the first termination codon is encountered. Hence, the newly found isoforms all contain different C-terminal domains. For HNF1 it has been shown that its C-terminal region is responsible for the activation of transcription. In transient transfection assays the two novel HNF1 isoforms, HNF1-B and -C, transactivate 5-fold better than the previously described HNF1 protein (HNF1-A). The newly isolated isoform of vHNF1, designated vHNF1-C, is unable to transactivate and behaves as a transdominant repressor when cotransfected with HNF1-A, -B or -C. All of the different isoforms of HNF1 and vHNF1 can form homo- and heterodimers and their mRNAs are differentially expressed in fetal and adult human liver, kidney and intestine, suggesting distinct roles during development. Our studies show that the transactivation domain of the members of the HNF1 homeoprotein family is organized in modules which can be exchanged to generate either more potent transcriptional activators or a transdominant repressor.

Indexed as

Alternative SplicingDNA-Binding ProteinsGenes, HomeoboxNuclear ProteinsTranscriptional ActivationAmino Acid SequenceAnimalsBase SequenceGene Expression RegulationGenetic VariationHepatocyte Nuclear Factor 1Hepatocyte Nuclear Factor 1-alphaHepatocyte Nuclear Factor 1-betaHumansLiverModels, GeneticDNA-Binding ProteinsHepatocyte Nuclear Factor 1Hepatocyte Nuclear Factor 1-alphaHepatocyte Nuclear Factor 1-betaHNF1A protein, humanHnf1a protein, ratHNF1B protein, humanNuclear ProteinsPoly ARNA, MessengerTranscription Factors

Identifiers

PMID7900999
PMCPMC413717
OpenAlexW1750867529

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.