Evidence map›Paper›PMID 21730019›Full record

ArticleJournal of cell science2011

Phospholipase Cζ binding to PtdIns(4,5)P2 requires the XY-linker region.

Michail Nomikos, Khalil Elgmati, Maria Theodoridou, Brian L Calver, George Nounesis, Karl Swann, F Anthony Lai

Open access · greenAbstract read
In one paragraph

Article in Journal of cell science, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
7.8field-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

33 citing papers in PubMed, 72 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Review
  6. Article
  7. Article
  8. Review
  9. ZneLife · 2023
    Article
  10. Review
  11. ZnbioRxiv : the preprint server for biology · 2023
    Article
  12. Article
  13. Review
  14. Review
  15. Review
  16. Review
  17. CaCold Spring Harbor perspectives in biology · 2019
    Review
  18. The eggstraordinary story of how life begins.Molecular reproduction and development · 2019
    Review
  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

7 authors at 2 institutions in 2 countries.

Michail NomikosCell Signalling Laboratory, Wales Heart Research Institute, Cardiff University School of Medicine, Cardiff University, Heath Park, Cardiff CF14 4XN, UK.
Khalil Elgmati
Maria Theodoridou
Brian L Calver
George Nounesis
Karl Swann
F Anthony Lai
Cardiff University · GBNational Centre of Scientific Research "Demokritos" · GR

Funding

Wellcome TrustWellcome Trust 080701
6 · The paper itself

Abstract

Phospholipase C-zeta (PLCζ) is a strong candidate for the mammalian sperm-derived factor that triggers the Ca(2+) oscillations required for egg activation at fertilization. PLCζ lacks a PH domain, which targets PLCδ1 to the phosphatidylinositol 4,5-bisphosphate (PtdIns(4,5)P(2)) substrate in the plasma membrane. Previous studies failed to detect PLCζ in the plasma membrane, hence the means of PLCζ binding to PtdIns(4,5)P(2) is unclear. We find that the PLCζ XY linker, but not the C2 domain, exhibits robust binding to PtdIns(4,5)P(2) or to liposomes containing near-physiological levels of PtdIns(4,5)P(2). The role of positively charged residues within the XY linker was addressed by sequentially substituting alanines for three lysine residues, K374, K375 and K377. Microinjection of these mutants into mouse eggs enabled their Ca(2+) oscillation-inducing activities to be compared with wild-type PLCζ. The XY-linker mutant proteins were purified and the in vitro PtdIns(4,5)P(2) hydrolysis and binding properties were monitored. Successive reduction of net positive charge within the PLCζ XY linker significantly affects both in vivo Ca(2+)-oscillation-inducing activity and in vitro PtdIns(4,5)P(2) interaction of mouse PLCζ. Our data suggest that positively charged residues within the XY linker play an important role in the PLCζ interaction with PtdIns(4,5)P(2), a crucial step in generating the Ca(2+) activation signal that is essential for fertilization in mammals.

Indexed as

AnimalsBlotting, WesternCalciumElectrophoresis, Polyacrylamide GelFemaleFertilizationMaleMicePhosphatidylinositol 4,5-DiphosphatePhosphoinositide Phospholipase CCalciumPhosphatidylinositol 4,5-DiphosphatePhosphoinositide Phospholipase C

Identifiers

PMID21730019
PMCPMC3138701
OpenAlexW2108702954

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.