Evidence map›Paper›PMID 25716896›Full record

ArticleScientific reports2015

Optimization of the heme biosynthesis pathway for the production of 5-aminolevulinic acid in Escherichia coli.

Junli Zhang, Zhen Kang, Jian Chen, Guocheng Du

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed
4.4field-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

50 citing papers in PubMed, 160 citations in OpenAlex.

  1. Article
  2. Metabolic engineering ofApplied and environmental microbiology · 2026
    Article
  3. Regulation of mitochondrial iron homeostasis in tumor cells.Molecular medicine (Cambridge, Mass.) · 2026
    Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Metabolic Engineering ofInternational journal of molecular sciences · 2024
    Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Microbial Synthesis of HemeMolecules (Basel, Switzerland) · 2023
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. A Non-functional γ-Aminobutyric Acid Shunt Pathway in CyanobacteriumInternational journal of molecular sciences · 2023
    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.

Junli Zhang1] The Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China [2] School of Biotechnology, Jiangnan University, Wuxi 214122, China [3] Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu 214122, China.
Zhen Kang1] The Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China [2] School of Biotechnology, Jiangnan University, Wuxi 214122, China [3] Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu 214122, China.
Jian Chen1] School of Biotechnology, Jiangnan University, Wuxi 214122, China [2] Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, Jiangsu 214122, China.
Guocheng Du1] School of Biotechnology, Jiangnan University, Wuxi 214122, China [2] The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China.
Jiangnan University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

5-Aminolevulinic acid (ALA), the committed intermediate of the heme biosynthesis pathway, shows significant promise for cancer treatment. Here, we identified that in addition to hemA and hemL, hemB, hemD, hemF, hemG and hemH are also the major regulatory targets of the heme biosynthesis pathway. Interestingly, up-regulation of hemD and hemF benefited ALA accumulation whereas overexpression of hemB, hemG and hemH diminished ALA accumulation. Accordingly, by combinatorial overexpression of the hemA, hemL, hemD and hemF with different copy-number plasmids, the titer of ALA was improved to 3.25 g l(-1). Furthermore, in combination with transcriptional and enzymatic analysis, we demonstrated that ALA dehydratase (HemB) encoded by hemB is feedback inhibited by the downstream intermediate protoporphyrinogen IX. This work has great potential to be scaled-up for microbial production of ALA and provides new important insights into the regulatory mechanism of the heme biosynthesis pathway.

Indexed as

Aminolevulinic AcidBiosynthetic PathwaysCloning, MolecularEnzyme RepressionEscherichia coliEscherichia coli ProteinsFerrochelataseGene Expression Regulation, BacterialHemePorphobilinogen SynthaseProtoporphyrinogen OxidaseProtoporphyrinsUp-RegulationAminolevulinic AcidEscherichia coli ProteinsFerrochelataseHemeHemG protein, E coliPorphobilinogen SynthaseprotoporphyrinogenProtoporphyrinogen OxidaseProtoporphyrins

Identifiers

PMID25716896
PMCPMC4341193
OpenAlexW2094795028

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.