Evidence map›Paper›PMID 9864368›Full record

ArticleThe Journal of cell biology1998

A gamete-specific, sex-limited homeodomain protein in Chlamydomonas.

V Kurvari, N V Grishin, W J Snell

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in The Journal of cell biology, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
1.4field-weighted citation impact, top 18% 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

21 citing papers in PubMed, 53 citations in OpenAlex.

  1. Article
  2. A conserved RWP-RK transcription factor VSR1 controls gametic differentiation in volvocine algae.Proceedings of the National Academy of Sciences of the United States of America · 2023
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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

3 authors at 1 institution in 1 country.

V KurvariDepartment of Cell Biology and Neuroscience, The University of Texas Southwestern Medical Center, Dallas, Texas 75235, USA.
N V Grishin
W J Snell
The University of Texas Southwestern Medical Center · US

Funding

CELL SURFACE RECOGNITION AND CELL INTERACTIONSR01GM025661 · NIGMS · UT SOUTHWESTERN MEDICAL CENTER · PI SNELL, WILLIAM J · 1985 to 2017
$5.9M
NIGMS NIH HHS GM25661NIGMS NIH HHS R01 GM025661
6 · The paper itself

Abstract

During fertilization in Chlamydomonas, gametes of opposite mating types interact with each other through sex-specific adhesion molecules on their flagellar surfaces. Flagellar adhesion brings the cell bodies of the gametes into close contact and initiates a signal transduction pathway in preparation for cell-cell fusion. We have identified a cDNA, gsp1, whose transcript levels are upregulated during flagellar adhesion. The GSP1 polypeptide is a novel, gamete-specific homeodomain protein, the first to be identified in an alga. Its homeodomain shows significant identity with several higher plant homeodomain proteins. Although encoded by a single copy gene present in cells of both mating types, immunoblot analysis showed that GSP1 was expressed in mating type (mt)+ gametes, but was not detectable in mt- gametes or in vegetative cells of either mating type. Moreover, GSP1 appeared late during gametogenesis, suggesting that it may function during adhesion with mt- gametes or after zygote formation. GSP1 is expressed in imp11, mt- mutant gametes, which have a lesion in the mid gene involved in sex determination and exhibit many phenotypic characteristics of mt+ gametes. Thus, gsp1 is negatively regulated by mid and is the first molecule to be identified in Chlamydomonas that shows sex-limited expression.

Indexed as

Amino Acid SequenceAnimalsBase SequenceCell AdhesionCell FusionChlamydomonas reinhardtiiDNA, ComplementaryFertilizationGene Expression Regulation, DevelopmentalGerm CellsHomeodomain ProteinsModels, MolecularMolecular Sequence DataPlant ProteinsProtein ConformationProtozoan ProteinsDNA, ComplementaryGSP1 protein, ChlamydomonasHomeodomain ProteinsPlant ProteinsProtozoan Proteins

Identifiers

PMID9864368
PMCPMC2175229
OpenAlexW2157267518

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.