Evidence map›Paper›PMID 31103047›Full record

ArticleMicrobial cell factories2019

Enhanced protopanaxadiol production from xylose by engineered Yarrowia lipolytica.

Yufen Wu, Shuo Xu, Xiao Gao, Man Li, Dashuai Li, Wenyu Lu

Abstract read
In one paragraph

Article in Microbial cell factories, 2019. 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. Effects of Replacing Alfalfa withAnimals : an open access journal from MDPI · 2026
    Article
  2. Review
  3. Frontiers in microbiology · 2025
    Review
  4. Article
  5. Review
  6. Review
  7. Review
  8. Engineering ofMetabolic engineering communications · 2022
    Review
  9. Article
  10. Article
  11. Review
  12. Article
  13. Research progress in bioremediation of petroleum pollution.Environmental science and pollution research international · 2021
    Review
  14. Review
  15. Yeast-Based Biosynthesis of Natural Products From Xylose.Frontiers in bioengineering and biotechnology · 2021
    Review
  16. Review
  17. Review
  18. Article
  19. Metabolic engineering ofBiotechnology for biofuels · 2020
    Article
  20. Frontiers in bioengineering and biotechnology · 2020
    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.

Yufen WuSchool of Chemical Engineering and Technology, Tianjin University, Tianjin, People's Republic of China.
Shuo XuSchool of Chemical Engineering and Technology, Tianjin University, Tianjin, People's Republic of China.
Xiao GaoSchool of Chemical Engineering and Technology, Tianjin University, Tianjin, People's Republic of China.
Man LiSchool of Chemical Engineering and Technology, Tianjin University, Tianjin, People's Republic of China.
Dashuai LiSchool of Chemical Engineering and Technology, Tianjin University, Tianjin, People's Republic of China.
Wenyu LuSchool of Chemical Engineering and Technology, Tianjin University, Tianjin, People's Republic of China. wenyulu@tju.edu.cn.

Funding

Major Research Plan of Tianjin No. 16YFXTSF00460National Natural Science Foundation of China No. 21878220
6 · The paper itself

Abstract

backgroundAs renewable biomass, lignocellulose remains one of the major choices for most countries in tackling global energy shortage and environment pollution. Efficient utilization of xylose, an important monosaccharide in lignocellulose, is essential for the production of high-value compounds, such as ethanol, lipids, and isoprenoids. Protopanaxadiol (PPD), a kind of isoprenoids, has important medical values and great market potential.

resultsThe engineered protopanaxadiol-producing Yarrowia lipolytica strain, which can use xylose as the sole carbon source, was constructed by introducing xylose reductase (XR) and xylitol dehydrogenase (XDH) from Scheffersomyces stipitis, overexpressing endogenous xylulose kinase (ylXKS) and heterologous PPD synthetic modules, and then 18.18 mg/L of PPD was obtained. Metabolic engineering strategies such as regulating cofactor balance, enhancing precursor flux, and improving xylose metabolism rate via XR (K270R/N272D) mutation, the overexpression of tHMG1/ERG9/ERG20 and transaldolase (TAL)/transketolase (TKL)/xylose transporter (TX), were implemented to enhance PPD production. The final Y14 strain exhibited the greatest PPD titer from xylose by fed-batch fermentation in a 5-L fermenter, reaching 300.63 mg/L [yield, 2.505 mg/g (sugar); productivity, 2.505 mg/L/h], which was significantly higher than the titer of glucose fermentation [titer, 167.17 mg/L; yield, 1.194 mg/g (sugar); productivity, 1.548 mg/L/h].

conclusionThe results showed that xylose was more suitable for PPD synthesis than glucose due to the enhanced carbon flux towards acetyl-CoA, the precursor for PPD biosynthetic pathway. This is the first report to produce PPD in Y. lipolytica with xylose as the sole carbon source, which developed a promising strategy for the efficient production of high-value triterpenoid compounds.

Indexed as

Aldehyde ReductaseBiomassBiosynthetic PathwaysD-Xylulose ReductaseFermentationMetabolic EngineeringMetabolic Networks and PathwaysOrganisms, Genetically ModifiedSapogeninsXyloseYarrowiaAldehyde ReductaseD-Xylulose ReductaseprotopanaxadiolSapogeninsXyloseMetabolic engineeringProtopanaxadiolSynthetic biologyXyloseYarrowia lipolytica

Identifiers

PMID31103047
PMCPMC6525355

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.