Evidence map›Paper›PMID 32565424›Full record

ArticleThe Journal of biological chemistry2020

Pterocarpan synthase (PTS) structures suggest a common quinone methide-stabilizing function in dirigent proteins and proteins with dirigent-like domains.

Qingyan Meng, Syed G A Moinuddin, Sung-Jin Kim, Diana L Bedgar, Michael A Costa, Dennis G Thomas, Robert P Young, Clyde A Smith, John R Cort, Laurence B Davin and 1 more

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.8field-weighted citation impact, top 16% 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

15 citing papers in PubMed, 34 citations in OpenAlex.

  1. Discovery of pseudobaptigenin synthase in fungal-infected Trifolium pratense roots.The Plant journal : for cell and molecular biology · 2026
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  6. Metabolomics navigates natural variation in pathogen-induced secondary metabolism across soybean cultivar populations.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
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  10. Review
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  15. MungbeanFrontiers in genetics · 2021
    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

11 authors at 3 institutions in 1 country.

Qingyan MengInstitute of Biological Chemistry, Washington State University, Pullman, Washington, USA.
Syed G A MoinuddinInstitute of Biological Chemistry, Washington State University, Pullman, Washington, USA.ORCID 0000-0002-9907-416X
Sung-Jin KimInstitute of Biological Chemistry, Washington State University, Pullman, Washington, USA.
Diana L BedgarInstitute of Biological Chemistry, Washington State University, Pullman, Washington, USA.
Michael A CostaInstitute of Biological Chemistry, Washington State University, Pullman, Washington, USA.
Dennis G ThomasEarth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington, USA.
Robert P YoungEarth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington, USA.ORCID 0000-0002-2686-9594
Clyde A SmithStanford Synchrotron Radiation Lightsource, Stanford University, Menlo Park, California, USA.
John R CortInstitute of Biological Chemistry, Washington State University, Pullman, Washington, USA.ORCID 0000-0001-6342-6461
Laurence B DavinInstitute of Biological Chemistry, Washington State University, Pullman, Washington, USA.ORCID 0000-0002-3248-6485
Norman G LewisInstitute of Biological Chemistry, Washington State University, Pullman, Washington, USA lewisn@wsu.edu.ORCID 0000-0001-5742-032X
Washington State University · USPacific Northwest National Laboratory · USStanford Synchrotron Radiation Lightsource · US

Funding

X-ray Absorption Spectroscopy (XAS) pp.711-759P41GM103393 · NIGMS · STANFORD UNIVERSITY · PI HODGSON, KEITH O · 2012 to 2019
$30.6M
NIGMS NIH HHS P41 GM103393
6 · The paper itself

Abstract

The biochemical activities of dirigent proteins (DPs) give rise to distinct complex classes of plant phenolics. DPs apparently began to emerge during the aquatic-to-land transition, with phylogenetic analyses revealing the presence of numerous DP subfamilies in the plant kingdom. The vast majority (>95%) of DPs in these large multigene families still await discovery of their biochemical functions. Here, we elucidated the 3D structures of two pterocarpan-forming proteins with dirigent-like domains. Both proteins stereospecifically convert distinct diastereomeric chiral isoflavonoid precursors to the chiral pterocarpans, (-)- and (+)-medicarpin, respectively. Their 3D structures enabled comparisons with stereoselective lignan- and aromatic terpenoid-forming DP orthologs. Each protein provides entry into diverse plant natural products classes, and our experiments suggest a common biochemical mechanism in binding and stabilizing distinct plant phenol-derived mono- and bis-quinone methide intermediates during different C-C and C-O bond-forming processes. These observations provide key insights into both their appearance and functional diversification of DPs during land plant evolution/adaptation. The proposed biochemical mechanisms based on our findings provide important clues to how additional physiological roles for DPs and proteins harboring dirigent-like domains can now be rationally and systematically identified.

Indexed as

Crystallography, X-RayGlycyrrhizaIndolequinonesLigasesMolecular Docking SimulationPisum sativumPlant ProteinsProtein ConformationProtein DomainsProtein MultimerizationPterocarpansIndolequinonesLigasesPlant ProteinsPterocarpansquinone methidecrystallographydimerizationdirigent proteindockinglignansligninsplant biochemistryplant defensepterocarpansquinone methides

Identifiers

PMID32565424
PMCPMC7450108
OpenAlexW3036036059

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.