Evidence map›Paper›PMID 36351903›Full record

ArticleNature communications2022

Alkaloid binding to opium poppy major latex proteins triggers structural modification and functional aggregation.

Natali Ozber, Samuel C Carr, Jeremy S Morris, Siyu Liang, Jacinta L Watkins, Kristian M Caldo, Jillian M Hagel, Kenneth K S Ng, Peter J Facchini

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2022. 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
3.7field-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

14 citing papers in PubMed, 23 citations in OpenAlex.

  1. Tuning reductase activity in monoterpene indole alkaloid biosynthesis.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Emerging functions within the enzyme families of plant alkaloid biosynthesis.Phytochemistry reviews : proceedings of the Phytochemical Society of Europe · 2023
    Article
  12. Article
  13. Article
  14. California poppy (Frontiers in plant science · 2023
    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

9 authors at 1 institution in 2 countries.

Natali Ozber *Department of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada.ORCID 0000-0003-3946-4104
Samuel C Carr *Department of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada.ORCID 0000-0001-7060-5038
Jeremy S MorrisDepartment of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada.
Siyu LiangDepartment of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada.
Jacinta L WatkinsDepartment of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada.
Kristian M CaldoDepartment of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada.
Jillian M HagelDepartment of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada.
Kenneth K S NgDepartment of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada.
Peter J FacchiniDepartment of Biological Sciences, University of Calgary, Calgary, Alberta, T2N 1N4, Canada. pfacchin@ucalgary.ca.ORCID 0000-0002-7693-290X
University of Calgary · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Opium poppy accumulates copious amounts of several benzylisoquinoline alkaloids including morphine, noscapine, and papaverine, in the specialized cytoplasm of laticifers, which compose an internal secretory system associated with phloem throughout the plant. The contiguous latex includes an abundance of related proteins belonging to the pathogenesis-related (PR)10 family known collectively as major latex proteins (MLPs) and representing at least 35% of the total cellular protein content. Two latex MLP/PR10 proteins, thebaine synthase and neopione isomerase, have recently been shown to catalyze late steps in morphine biosynthesis previously assigned as spontaneous reactions. Using a combination of sucrose density-gradient fractionation-coupled proteomics, differential scanning fluorimetry, isothermal titration calorimetry, and X-ray crystallography, we show that the major latex proteins are a family of alkaloid-binding proteins that display altered conformation in the presence of certain ligands. Addition of MLP/PR10 proteins to yeast strains engineered with morphine biosynthetic genes from the plant significantly enhanced the conversion of salutaridine to morphinan alkaloids.

Indexed as

AlkaloidsBenzylisoquinolinesPapaverLatexMorphineSaccharomyces cerevisiaeAlkaloidsBenzylisoquinolinesLatexMorphine

Identifiers

PMID36351903
PMCPMC9646721
OpenAlexW4308607478

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.