Evidence map›Paper›PMID 15024099›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2004

Histone H1 and the origin of protamines.

John D Lewis, Núria Saperas, Yue Song, Maria Jose Zamora, Manel Chiva, Juan Ausió

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
8.6field-weighted citation impact, top 2% 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

28 citing papers in PubMed, 96 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. The protamines of the noble false widow spiderbioRxiv : the preprint server for biology · 2024
    Article
  5. Article
  6. Derepression of Y-linked multicopy protamine-like genes interferes with sperm nuclear compaction inProceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  7. Article
  8. Review
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. The association betweenInternational journal of reproductive biomedicine · 2019
    Article
  16. Article
  17. Article
  18. Review
  19. Mutation analysis of TNP1 gene in infertile men with varicocele.Iranian journal of reproductive medicine · 2014
    Article
  20. Article
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 1 institution in 2 countries.

John D LewisDepartment of Biochemistry and Microbiology, University of Victoria, P.O. Box 3055, Petch Building, Victoria, British Columbia, Canada V8W 3P6.
Núria Saperas
Yue Song
Maria Jose Zamora
Manel Chiva
Juan Ausió
Universitat de Vic - Universitat Central de Catalunya · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We present evidence that chordate protamines have evolved from histone H1. During the final stages of spermatogenesis, the compaction of DNA in many organisms is accomplished by the replacement of histones with a class of arginine-rich proteins called protamines. In other organisms, however, condensation of sperm DNA can occur with comparable efficiency in the presence of somatic-type histones or, alternatively, an intermediate class of proteins called protamine-like proteins. The idea that the highly specialized sperm chromosomal proteins (protamines) and somatic chromosomal proteins (histones) could be related dates back almost to the discovery of these proteins. Although this notion has frequently been revisited since that time, there has been a complete lack of supporting experimental evidence. Here we show that the emergence of protamines in chordates occurred very quickly, as a result of the conversion of a lysine-rich histone H1 to an arginine-rich protamine. We have characterized the sperm nuclear basic proteins of the tunicate Styela montereyensis, which we show consists of both a protamine and a sperm-specific histone H1 with a protamine tail. Comparison of the genes encoding these proteins to that of a sister protochordate, Ciona intestinalis, has indicated this rapid and dramatic change is most likely the result of frameshift mutations in the tail of the sperm-specific histone H1. By establishing an evolutionary link between the chromatin-condensing histone H1s of somatic tissues and the chromatin-condensing proteins of the sperm, these results provide unequivocal support to the notion that vertebrate protamines evolved from histones.

Indexed as

Evolution, MolecularAmino Acid SequenceAnimalsBase SequenceDNA PrimersHistonesMaleMolecular Sequence DataMutationPhylogenyPolymerase Chain ReactionProtaminesSpermatozoaUrochordataDNA PrimersHistonesProtamines

Identifiers

PMID15024099
PMCPMC384709
OpenAlexW2046792485

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.