Evidence map›Paper›PMID 27991536›Full record

ArticleScientific reports2016

Genes encoding norcoclaurine synthase occur as tandem fusions in the Papaveraceae.

Jing Li, Eun-Jeong Lee, Limei Chang, Peter J Facchini

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
4.9field-weighted citation impact, top 5% 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

20 citing papers in PubMed, 43 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Review
  9. Article
  10. Review
  11. Isolation and characterization of twoThe Journal of biological chemistry · 2020
    Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Complete biosynthesis of noscapine and halogenated alkaloids in yeast.Proceedings of the National Academy of Sciences of the United States of America · 2018
    Article
  17. Article
  18. ThePlant physiology · 2018
    Article
  19. 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

4 authors at 1 institution in 1 country.

Jing LiDepartment of Biological Sciences, University of Calgary, Calgary, Alberta T2N 1N4, Canada.
Eun-Jeong LeeDepartment of Biological Sciences, University of Calgary, Calgary, Alberta T2N 1N4, Canada.
Limei ChangDepartment 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.
University of Calgary · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Norcoclaurine synthase (NCS) catalyzes the enantioselective Pictet-Spengler condensation of dopamine and 4-hydroxyphenylacetaldehyde as the first step in benzylisoquinoline alkaloid (BIA) biosynthesis. NCS orthologs in available transcriptome databases were screened for variants that might improve the low yield of BIAs in engineered microorganisms. Databases for 21 BIA-producing species from four plant families yielded 33 assembled contigs with homology to characterized NCS genes. Predicted translation products generated from nine contigs consisted of two to five sequential repeats, each containing most of the sequence found in single-domain enzymes. Assembled contigs containing tandem domain repeats were detected only in members of the Papaveraceae family, including opium poppy (Papaver somniferum). Fourteen cDNAs were generated from 10 species, five of which encoded NCS orthologs with repeated domains. Functional analysis of corresponding recombinant proteins yielded six active NCS enzymes, including four containing either two, three or four repeated catalytic domains. Truncation of the first 25 N-terminal amino acids from the remaining polypeptides revealed two additional enzymes. Multiple catalytic domains correlated with a proportional increase in catalytic efficiency. Expression of NCS genes in Saccharomyces cereviseae also produced active enzymes. The metabolic conversion capacity of engineered yeast positively correlated with the number of repeated domains.

Indexed as

AlkaloidsAmino Acid SequenceBenzylisoquinolinesBiocatalysisCarbon-Nitrogen LigasesCatalytic DomainCloning, MolecularContig MappingDatabases, FactualDNA, ComplementaryEnzyme AssaysEscherichia coliKineticsPapaveraceaePhylogenyPlant ProteinsAlkaloidsBenzylisoquinolinesCarbon-Nitrogen LigasesDNA, Complementarynorcoclaurine synthasePlant ProteinsRecombinant Proteins

Identifiers

PMID27991536
PMCPMC5171800
OpenAlexW2564375503

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.