Evidence map›Paper›PMID 17355624›Full record

ArticleFrontiers in zoology2007

Duplicated Hox genes in the spider Cupiennius salei.

Evelyn E Schwager, Michael Schoppmeier, Matthias Pechmann, Wim G M Damen

Open access · goldAbstract read
In one paragraph

Article in Frontiers in zoology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
1.6field-weighted citation impact, top 17% 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

37 citing papers in PubMed, 82 citations in OpenAlex.

  1. Single-cell sequencing reveals potential novel insights into appendage-patterning and joint-development in a spider.Developmental dynamics : an official publication of the American Association of Anatomists · 2026
    Article
  2. Article
  3. Gene and Genome Duplication in Spiders.Journal of experimental zoology. Part B, Molecular and developmental evolution · 2025
    Review
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  13. A spider in motion: facets of sensory guidance.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2021
    Review
  14. Anterior Hox Genes and the Process of Cephalization.Frontiers in cell and developmental biology · 2021
    Review
  15. Article
  16. Article
  17. Review
  18. Homeobox Gene Duplication and Divergence in Arachnids.Molecular biology and evolution · 2018
    Article
  19. Review
  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

4 authors at 2 institutions in 1 country.

Evelyn E SchwagerInstitute for Genetics, University of Cologne, Köln, Germany. e.schwager@uni-koeln.de
Michael Schoppmeier
Matthias Pechmann
Wim G M Damen
University of Cologne · DETH Köln - University of Applied Sciences · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundHox genes are expressed in specific domains along the anterior posterior body axis and define the regional identity. In most animals these genes are organized in a single cluster in the genome and the order of the genes in the cluster is correlated with the anterior to posterior expression of the genes in the embryo. The conserved order of the various Hox gene orthologs in the cluster among most bilaterians implies that such a Hox cluster was present in their last common ancestor. Vertebrates are the only metazoans so far that have been shown to contain duplicated Hox clusters, while all other bilaterians seem to possess only a single cluster.

resultsWe here show that at least three Hox genes of the spider Cupiennius salei are present as two copies in this spider. In addition to the previously described duplicated Ultrabithorax gene, we here present sequence and expression data of a second Deformed gene, and of two Sex comb reduced genes. In addition, we describe the sequence and expression of the Cupiennius proboscipedia gene. The spider Cupiennius salei is the first chelicerate for which orthologs of all ten classes of arthropod Hox genes have been described. The posterior expression boundary of all anterior Hox genes is at the tagma border of the prosoma and opisthosoma, while the posterior boundary of the posterior Hox genes is at the posterior end of the embryo.

conclusionThe presence of at least three duplicated Hox genes points to a major duplication event in the lineage to this spider, perhaps even of the complete Hox cluster as has taken place in the lineage to the vertebrates. The combined data of all Cupiennius Hox genes reveal the existence of two distinct posterior expression boundaries that correspond to morphological tagmata boundaries.

Identifiers

PMID17355624
PMCPMC1838909
OpenAlexW2080529142

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LicenceCC BY
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Registered trials

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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.