Evidence map›Paper›PMID 15659633›Full record

ArticleThe Plant cell2005

Plus and minus sexual agglutinins from Chlamydomonas reinhardtii.

Patrick J Ferris, Sabine Waffenschmidt, James G Umen, Huawen Lin, Jae-Hyeok Lee, Koichi Ishida, Takeaki Kubo, Jeffrey Lau, Ursula W Goodenough

Open access · greenAbstract read
In one paragraph

Article in The Plant cell, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed
1.9field-weighted citation impact, top 15% 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

47 citing papers in PubMed, 89 citations in OpenAlex.

  1. Review
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  4. FromiScience · 2024
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  5. Characteristics of NGenomics, proteomics & bioinformatics · 2023
    Article
  6. 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
    Article
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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

9 authors at 2 institutions in 2 countries.

Patrick J FerrisDepartment of Biology, Washington University, St. Louis, Missouri 63130, USA.
Sabine Waffenschmidt
James G Umen
Huawen Lin
Jae-Hyeok Lee
Koichi Ishida
Takeaki Kubo
Jeffrey Lau
Ursula W Goodenough
Washington University in St. Louis · USUniversity of Cologne · DE

Funding

FLAGELLAR MEMBRANE ADHESION AND SEXUAL SIGNALINGR01GM026150 · NIGMS · WASHINGTON UNIVERSITY · PI GOODENOUGH, URSULA W. · 1985 to 2003
$1.0M
UNIPARENTAL INHERITANCE OF CHLOROPLAST DNAF32GM018502 · NIGMS · WASHINGTON UNIVERSITY · PI UMEN, JAMES G · 1996 to 1998
–
NIGMS NIH HHS F32 GM018502NIGMS NIH HHS GM-26150NIGMS NIH HHS R01 GM026150
6 · The paper itself

Abstract

Gametes of the unicellular green alga Chlamydomonas reinhardtii undergo sexual adhesion via enormous chimeric Hyp-rich glycoproteins (HRGPs), the plus and minus sexual agglutinins, that are displayed on their flagellar membrane surfaces. We have previously purified the agglutinins and analyzed their structural organization using electron microscopy. We report here the cloning and sequencing of the Sag1 and Sad1 genes that encode the two agglutinins and relate their derived amino acid sequences and predicted secondary structure to the morphology of the purified proteins. Both agglutinin proteins are organized into three distinct domains: a head, a shaft in a polyproline II configuration, and an N-terminal domain. The plus and minus heads are related in overall organization but poorly conserved in sequence except for two regions of predicted hydrophobic alpha-helix. The shafts contain numerous repeats of the PPSPX motif previously identified in Gp1, a cell wall HRGP. We propose that the head domains engage in autolectin associations with the distal termini of their own shafts and suggest ways that adhesion may involve head-head interactions, exolectin interactions between the heads and shafts of opposite type, and antiparallel shaft-shaft interactions mediated by carbohydrates displayed in polyproline II configurations.

Indexed as

AgglutininsAmino Acid SequenceAnimalsChlamydomonas reinhardtiiChromosome MappingCloning, MolecularHydrogen-Ion ConcentrationMolecular Sequence DataMutagenesis, InsertionalProtozoan ProteinsRecombinant Fusion ProteinsSequence AlignmentSequence Homology, Amino AcidAgglutininsProtozoan ProteinsRecombinant Fusion Proteins

Identifiers

PMID15659633
PMCPMC548829
OpenAlexW2100664661

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.