Evidence map›Paper›PMID 26166409›Full record

ArticleMetabolic engineering2015

De novo production of the key branch point benzylisoquinoline alkaloid reticuline in yeast.

Isis J Trenchard, Michael S Siddiqui, Kate Thodey, Christina D Smolke

Open access · greenAbstract read
In one paragraph

Article in Metabolic engineering, 2015. 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
5.0field-weighted citation impact, top 4% 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, 118 citations in OpenAlex.

  1. Article
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  12. Concise synthesis of (Chemical science · 2023
    Article
  13. Article
  14. Article
  15. Biosynthesis of tetrahydropapaverine and semisynthesis of papaverine in yeast.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  16. Metabolic engineering communications · 2022
    Article
  17. Article
  18. Review
  19. Review
  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

4 authors at 1 institution in 1 country.

Isis J TrenchardDepartment of Bioengineering, Stanford University, 443 Via Ortega, MC 4245, Stanford, CA 94305, United States.
Michael S SiddiquiDepartment of Chemical Engineering; Stanford University, Stanford, CA 94305, United States.
Kate ThodeyDepartment of Bioengineering, Stanford University, 443 Via Ortega, MC 4245, Stanford, CA 94305, United States.
Christina D SmolkeDepartment of Bioengineering, Stanford University, 443 Via Ortega, MC 4245, Stanford, CA 94305, United States. Electronic address: csmolke@stanford.edu.
Stanford University · US

Funding

Synthetic Biology Platforms for Natural Product Discovery and BiosynthesisDP1AT007886 · NCCIH · STANFORD UNIVERSITY · PI SMOLKE, CHRISTINA D · 2012 to 2016
$3.9M
NCCIH NIH HHS AT007886NCCIH NIH HHS DP1 AT007886
6 · The paper itself

Abstract

Microbial biosynthesis for plant-based natural products, such as the benzylisoquinoline alkaloids (BIAs), has the potential to address limitations in plant-based supply of established drugs and make new molecules available for drug discovery. While yeast strains have been engineered to produce a variety of downstream BIAs including the opioids, these strains have relied on feeding an early BIA substrate. We describe the de novo synthesis of the major BIA branch point intermediate reticuline via norcoclaurine in Saccharomyces cerevisiae. Modifications were introduced into yeast central metabolism to increase supply of the BIA precursor tyrosine, allowing us to achieve a 60-fold increase in production of the early benzylisoquinoline scaffold from fed dopamine with no supply of exogenous tyrosine. Yeast strains further engineered to express a mammalian tyrosine hydroxylase, four mammalian tetrahydrobiopterin biosynthesis and recycling enzymes, and a bacterial DOPA decarboxylase produced norcoclaurine de novo. We further increased production of early benzylisoquinoline scaffolds by 160-fold through introducing mutant tyrosine hydroxylase enzymes, an optimized plant norcoclaurine synthase variant, and optimizing culture conditions. Finally, we incorporated five additional plant enzymes--three methyltransferases, a cytochrome P450, and its reductase partner--to achieve de novo production of the key branch point molecule reticuline with a titer of 19.2 μg/L. These strains and reconstructed pathways will serve as a platform for the biosynthesis of diverse natural and novel BIAs.

Indexed as

Metabolic EngineeringBenzylisoquinolinesSaccharomyces cerevisiaeBenzylisoquinolinesreticulinePlant alkaloidsSynthetic biologyYeast

Identifiers

PMID26166409
PMCPMC4575844
OpenAlexW2195045928

What OpenQuestion holds

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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.