Evidence map›Paper›PMID 27401545›Full record

ArticleThe Plant cell2016

Structural Analysis of an Avr4 Effector Ortholog Offers Insight into Chitin Binding and Recognition by the Cf-4 Receptor.

Amanda C Kohler, Li-Hung Chen, Nicholas Hurlburt, Anthony Salvucci, Benjamin Schwessinger, Andrew J Fisher, Ioannis Stergiopoulos

Open access · bronzeAbstract read
In one paragraph

Article in The Plant cell, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
10.3field-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

14 citing papers in PubMed, 41 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Fungal Effectoromics: A World in Constant Evolution.International journal of molecular sciences · 2022
    Review
  5. Action Mechanisms of Effectors in Plant-Pathogen Interaction.International journal of molecular sciences · 2022
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Secretome-Wide Analysis of Lysine Acetylation inFrontiers in microbiology · 2020
    Article
  11. Article
  12. Article
  13. Article
  14. Effectors of Filamentous Plant Pathogens: Commonalities amid Diversity.Microbiology and molecular biology reviews : MMBR · 2017
    Review
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 1 institution in 1 country.

Amanda C KohlerDepartment of Plant Pathology, University of California Davis, Davis, California 95616.
Li-Hung ChenDepartment of Plant Pathology, University of California Davis, Davis, California 95616.
Nicholas HurlburtDepartment of Chemistry, University of California Davis, Davis, California 95616.
Anthony SalvucciDepartment of Plant Pathology, University of California Davis, Davis, California 95616.
Benjamin SchwessingerDepartment of Plant Pathology, University of California Davis, Davis, California 95616.
Andrew J FisherDepartment of Chemistry, University of California Davis, Davis, California 95616 Department of Molecular and Cellular Biology, University of California Davis, Davis, California 95616.
Ioannis StergiopoulosDepartment of Plant Pathology, University of California Davis, Davis, California 95616 istergiopoulos@ucdavis.edu.ORCID 0000-0002-2368-6119
University of California, Davis · US

Funding

X-ray Absorption Spectroscopy (XAS) pp.711-759P41GM103393 · NIGMS · STANFORD UNIVERSITY · PI HODGSON, KEITH O · 2012 to 2019
$30.6M
UC Davis MCB T32 Administrative Supplement to Recognize Excellence in Diversity, Equity, Inclusion, and Accessibility (DEIA) MentorshipT32GM007377 · NIGMS · UNIVERSITY OF CALIFORNIA DAVIS · PI CHEDIN, FREDERIC LOUIS · 1985 to 2023
$9.9M
NIGMS NIH HHS P41 GM103393NIGMS NIH HHS T32 GM007377
6 · The paper itself

Abstract

Chitin is a key component of fungal cell walls and a potent inducer of innate immune responses. Consequently, fungi may secrete chitin-binding lectins, such as the Cf-Avr4 effector protein from the tomato pathogen Cladosporium fulvum, to shield chitin from host-derived chitinases during infection. Homologs of Cf-Avr4 are found throughout Dothideomycetes, and despite their modest primary sequence identity, many are perceived by the cognate tomato immune receptor Cf-4. Here, we determined the x-ray crystal structure of Pf-Avr4 from the tomato pathogen Pseudocercospora fuligena, thus providing a three-dimensional model of an Avr4 effector protein. In addition, we explored structural, biochemical, and functional aspects of Pf-Avr4 and Cf-Avr4 to further define the biology of core effector proteins and outline a conceptual framework for their pleiotropic recognition by single immune receptors. We show that Cf-Avr4 and Pf-Avr4 share functional specificity in binding (GlcNAc)6 and in providing protection against plant- and microbial-derived chitinases, suggesting a broader role beyond deregulation of host immunity. Furthermore, structure-guided site-directed mutagenesis indicated that residues in Pf-Avr4 important for binding chitin do not directly influence recognition by Cf-4 and further suggested that the property of recognition is structurally separated or does not fully overlap with the virulence function of the effector.

Indexed as

ChitinCladosporiumMutagenesis, Site-DirectedPlant ProteinsProtein BindingSolanum lycopersicumChitinPlant Proteins

Identifiers

PMID27401545
PMCPMC5006696
OpenAlexW2461653059

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.