Evidence map›Paper›PMID 26023160›Full record

ArticleThe Plant cell2015

A Dedicated Type II NADPH Dehydrogenase Performs the Penultimate Step in the Biosynthesis of Vitamin K1 in Synechocystis and Arabidopsis.

Abdelhak Fatihi, Scott Latimer, Stefan Schmollinger, Anna Block, Patrick H Dussault, Wim F J Vermaas, Sabeeha S Merchant, Gilles J Basset

Open access · bronzeAbstract read
In one paragraph

Article in The Plant cell, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
3.9field-weighted citation impact, top 7% 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

32 citing papers in PubMed, 60 citations in OpenAlex.

  1. Review
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  11. Bean and Pea Plastoglobules Change in Response to Chilling Stress.International journal of molecular sciences · 2021
    Article
  12. Proceedings of the National Academy of Sciences of the United States of America · 2021
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  15. The Cryptic Plastid ofmSphere · 2020
    Article
  16. Article
  17. Review
  18. Efficient Photosynthetic Functioning ofFrontiers in plant science · 2020
    Article
  19. Low UV-C stress modulatesBiotechnology for biofuels · 2020
    Article
  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

8 authors at 3 institutions in 1 country.

Abdelhak FatihiDepartment of Agronomy and Horticulture, and Center for Plant Science Innovation, University of Nebraska, Lincoln, Nebraska 68588.
Scott LatimerDepartment of Agronomy and Horticulture, and Center for Plant Science Innovation, University of Nebraska, Lincoln, Nebraska 68588.
Stefan SchmollingerDepartment of Chemistry and Biochemistry, University of California, Los Angeles, California 90095.
Anna BlockDepartment of Agronomy and Horticulture, and Center for Plant Science Innovation, University of Nebraska, Lincoln, Nebraska 68588.
Patrick H DussaultDepartment of Chemistry, University of Nebraska, Lincoln, Nebraska 68588.
Wim F J VermaasSchool of Life Sciences and Center for the Study of Early Events in Photosynthesis, Arizona State University, Tempe, Arizona 85287.
Sabeeha S MerchantDepartment of Chemistry and Biochemistry, University of California, Los Angeles, California 90095 Institute for Genomics and Proteomics, University of California, Los Angeles, California 90095.
Gilles J BassetDepartment of Agronomy and Horticulture, and Center for Plant Science Innovation, University of Nebraska, Lincoln, Nebraska 68588 gbasset2@unl.edu.
University of Nebraska–Lincoln · USUniversity of California, Los Angeles · USArizona State University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Mutation of Arabidopsis thaliana NAD(P)H DEHYDROGENASE C1 (NDC1; At5g08740) results in the accumulation of demethylphylloquinone, a late biosynthetic intermediate of vitamin K1. Gene coexpression and phylogenomics analyses showed that conserved functional associations occur between vitamin K biosynthesis and NDC1 homologs throughout the prokaryotic and eukaryotic lineages. Deletion of Synechocystis ndbB, which encodes for one such homolog, resulted in the same defects as those observed in the cyanobacterial demethylnaphthoquinone methyltransferase knockout. Chemical modeling and assay of purified demethylnaphthoquinone methyltransferase demonstrated that, by virtue of the strong electrophilic nature of S-adenosyl-l-methionine, the transmethylation of the demethylated precursor of vitamin K is strictly dependent on the reduced form of its naphthoquinone ring. NDC1 was shown to catalyze such a prerequisite reduction by using NADPH and demethylphylloquinone as substrates and flavine adenine dinucleotide as a cofactor. NDC1 displayed Michaelis-Menten kinetics and was markedly inhibited by dicumarol, a competitive inhibitor of naphthoquinone oxidoreductases. These data demonstrate that the reduction of the demethylnaphthoquinone ring represents an authentic step in the biosynthetic pathway of vitamin K, that this reaction is enzymatically driven, and that a selection pressure is operating to retain type II NAD(P)H dehydrogenases in this process.

Indexed as

ArabidopsisArabidopsis ProteinsBacterial ProteinsGene Expression Regulation, PlantGene Knockout TechniquesMultigene FamilyNADH, NADPH OxidoreductasesPhylogenySynechocystisVitamin K 1Arabidopsis ProteinsBacterial ProteinsNADH, NADPH OxidoreductasesNDC1 protein, ArabidopsisVitamin K 1

Identifiers

PMID26023160
PMCPMC4498204
OpenAlexW1824130715

What OpenQuestion holds

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Registered trials

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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.