Evidence map›Paper›PMID 24278153›Full record

ArticlePloS one2013

Statistical experimental design guided optimization of a one-pot biphasic multienzyme total synthesis of amorpha-4,11-diene.

Xixian Chen, Congqiang Zhang, Ruiyang Zou, Kang Zhou, Gregory Stephanopoulos, Heng Phon Too

Abstract read
In one paragraph

Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
–field-weighted citation impact
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

22 citing papers in PubMed.

  1. Review
  2. Article
  3. Reaction Engineering of In Vitro Natural Product Biosynthesis: Challenges and Strategies.Chembiochem : a European journal of chemical biology · 2025
    Review
  4. Article
  5. Article
  6. Biochemical synthesis of taxanes from mevalonate.Synthetic and systems biotechnology · 2024
    Article
  7. Article
  8. Article
  9. Review
  10. Review
  11. Article
  12. Review
  13. Review
  14. Cell-free biosynthesis of limonene using enzyme-enrichedSynthetic biology (Oxford, England) · 2019
    Article
  15. Review
  16. Article
  17. Multienzyme Biosynthesis of Dihydroartemisinic Acid.Molecules (Basel, Switzerland) · 2017
    Article
  18. Cross-Regulation of an Artificial Metalloenzyme.Angewandte Chemie (International ed. in English) · 2017
    Article
  19. Modules forSynthetic and systems biotechnology · 2017
    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

6 authors.

Xixian ChenChemical and Pharmaceutical Engineering, Singapore-MIT Alliance, Singapore, Singapore.
Congqiang Zhang
Ruiyang Zou
Kang Zhou
Gregory Stephanopoulos
Heng Phon Too

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In vitro synthesis of chemicals and pharmaceuticals using enzymes is of considerable interest as these biocatalysts facilitate a wide variety of reactions under mild conditions with excellent regio-, chemo- and stereoselectivities. A significant challenge in a multi-enzymatic reaction is the need to optimize the various steps involved simultaneously so as to obtain high-yield of a product. In this study, statistical experimental design was used to guide the optimization of a total synthesis of amorpha-4,11-diene (AD) using multienzymes in the mevalonate pathway. A combinatorial approach guided by Taguchi orthogonal array design identified the local optimum enzymatic activity ratio for Erg12:Erg8:Erg19:Idi:IspA to be 100∶100∶1∶25∶5, with a constant concentration of amorpha-4,11-diene synthase (Ads, 100 mg/L). The model also identified an unexpected inhibitory effect of farnesyl pyrophosphate synthase (IspA), where the activity was negatively correlated with AD yield. This was due to the precipitation of farnesyl pyrophosphate (FPP), the product of IspA. Response surface methodology was then used to optimize IspA and Ads activities simultaneously so as to minimize the accumulation of FPP and the result showed that Ads to be a critical factor. By increasing the concentration of Ads, a complete conversion (∼100%) of mevalonic acid (MVA) to AD was achieved. Monovalent ions and pH were effective means of enhancing the specific Ads activity and specific AD yield significantly. The results from this study represent the first in vitro reconstitution of the mevalonate pathway for the production of an isoprenoid and the approaches developed herein may be used to produce other isopentenyl pyrophosphate (IPP)/dimethylallyl pyrophosphate (DMAPP) based products.

Indexed as

Alkyl and Aryl TransferasesGeranyltranstransferaseHemiterpenesMevalonic AcidOrganophosphorus CompoundsPolycyclic SesquiterpenesPolyisoprenyl PhosphatesResearch DesignSesquiterpenes3,3-dimethylallyl pyrophosphateAlkyl and Aryl Transferasesamorpha-4,11-dieneamorpha-4,11-diene synthasefarnesyl pyrophosphateGeranyltranstransferaseHemiterpenesisopentenyl pyrophosphateMevalonic AcidOrganophosphorus CompoundsPolycyclic SesquiterpenesPolyisoprenyl PhosphatesSesquiterpenes

Identifiers

PMID24278153
PMCPMC3835790

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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.