Evidence map›Paper›PMID 21998167›Full record

ArticleBiology of reproduction2012

Function of the acrosomal matrix: zona pellucida 3 receptor (ZP3R/sp56) is not essential for mouse fertilization.

Yuko Muro, Mariano G Buffone, Masaru Okabe, George L Gerton

Open access · bronzeAbstract read
In one paragraph

Article in Biology of reproduction, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
6.3field-weighted citation impact, top 4% 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

30 citing papers in PubMed, 73 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Sexual selection and pseudogenization in primate fertilization.Evolution; international journal of organic evolution · 2025
    Article
  6. Review
  7. Review
  8. Article
  9. Article
  10. Article
  11. Molecular mechanisms and evolution of fertilization proteins.Journal of experimental zoology. Part B, Molecular and developmental evolution · 2021
    Review
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. The Acrosomal Matrix.Advances in anatomy, embryology, and cell biology · 2016
    Review
  19. 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

4 authors at 4 institutions in 3 countries.

Yuko MuroResearch Institute for Microbial Diseases, Osaka University, Suita, Japan.
Mariano G Buffone
Masaru Okabe
George L Gerton
Experimental Medicine and Biology Institute · AROsaka University · JPOsaka University of Pharmaceutical Sciences · JPUniversity of Pennsylvania · US

Funding

REPRODUCTIVE BIOLOGY RESEARCH TRAINING FOR LATIN AMERICAD43TW000671 · FIC · UNIVERSITY OF PENNSYLVANIA · PI STRAUSS, JEROME F. · 1995 to 2005
$1.9M
ACROSOMAL MATRIX, EXOCYTOSIS AND MAMMALIAN FERTILIZATIONR01HD041552 · NICHD · UNIVERSITY OF PENNSYLVANIA · PI GERTON, GEORGE L. · 2003 to 2007
$1.6M
FIC NIH HHS 5D43TW000671FIC NIH HHS D43 TW000671NICHD NIH HHS HD-41552NICHD NIH HHS R01 HD041552
6 · The paper itself

Abstract

In mammalian fertilization, sperm-zona pellucida binding is considered to be a critical aspect of gamete interaction. In this study, we examine the mouse sperm acrosomal matrix protein zona pellucida 3 receptor (ZP3R; formerly called sp56) because of our interest in defining the function of the acrosomal matrix, the particulate compartment within the sperm secretory acrosome. Using targeted deletion of the Zp3r gene by homologous recombination, we examined the fertility of nullizygous animals. Our experiments showed that males and females homozygous for the affected gene exhibited no differences in litter sizes compared to wild-type and heterozygous animals. Testis weights of nullizygous males were equivalent to those of wild-type and heterozygous males, and no differences in the number of sperm produced by mice of three genotypes were found. In vitro fertilization rates using cumulus-intact and cumulus-free oocytes were also equivalent. Examination of sperm-binding zonae of unfertilized eggs and the ability of the sperm to undergo acrosomal exocytosis in response to calcium ionophore A23187 displayed no differences between wild-type, heterozygous, and nullizygous mouse sperm. These results provide further evidence that either ZP3R is not involved in sperm-zona pellucida binding or this process might be functionally redundant, involving multiple proteins for gamete interactions.

Indexed as

AcrosomeAcrosome ReactionAnimalsFemaleFertilizationGene Expression RegulationMaleMiceReceptors, Cell SurfaceSpermatozoaTestisReceptors, Cell Surfacesp56 protein, mouse

Identifiers

PMID21998167
PMCPMC3313668
OpenAlexW2086951728

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.