Evidence map›Paper›PMID 27842593›Full record

ArticleMicrobial cell factories2016

Easy regulation of metabolic flux in Escherichia coli using an endogenous type I-E CRISPR-Cas system.

Yizhao Chang, Tianyuan Su, Qingsheng Qi, Quanfeng Liang

Open access · goldAbstract read
In one paragraph

Article in Microbial cell factories, 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
1.4field-weighted citation impact, top 17% 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, 41 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. CRISPR/Cas Technologies and Their Applications inFrontiers in bioengineering and biotechnology · 2021
    Review
  11. Article
  12. Article
  13. Review
  14. Article
  15. Review
  16. Recent Advances in Genetic Tools forFrontiers in genetics · 2020
    Review
  17. Review
  18. Article
  19. Genome editing using the endogenous type I CRISPR-Cas system inProceedings of the National Academy of Sciences of the United States of America · 2019
    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.

Yizhao ChangState Key Laboratory of Microbial Technology, Jinan, 250100, China.
Tianyuan SuState Key Laboratory of Microbial Technology, Jinan, 250100, China.
Qingsheng QiState Key Laboratory of Microbial Technology, Jinan, 250100, China. qiqingsheng@sdu.edu.cn.
Quanfeng LiangState Key Laboratory of Microbial Technology, Jinan, 250100, China. liangquanfeng@sdu.edu.cn.
State Key Laboratory of Microbial Technology

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundClustered regularly interspaced short palindromic repeats interference (CRISPRi) is a recently developed powerful tool for gene regulation. In Escherichia coli, the type I CRISPR system expressed endogenously shall be easy for internal regulation without causing metabolic burden in compared with the widely used type II system, which expressed dCas9 as an additional plasmid.

resultsBy knocking out cas3 and activating the expression of CRISPR-associated complex for antiviral defense (Cascade), we constructed a native CRISPRi system in E. coli. Downregulation of the target gene from 6 to 82% was demonstrated using green fluorescent protein. Regulation of the citrate synthase gene (gltA) in the TCA cycle affected host metabolism. The effect of metabolic flux regulation was demonstrated by the poly-3-hydroxbutyrate (PHB) accumulation in vivo.

conclusionBy regulating native gltA in E. coli using an engineered endogenous type I-E CRISPR system, we redirected metabolic flux from the central metabolic pathway to the PHB synthesis pathway. This study demonstrated that the endogenous type I-E CRISPR-Cas system is an easy and effective method for regulating internal metabolic pathways, which is useful for product synthesis.

Indexed as

Citrate (si)-SynthaseCRISPR-Associated ProteinsCRISPR-Cas SystemsDNA HelicasesDown-RegulationEscherichia coliEscherichia coli ProteinsGene Knockout TechniquesGenetic EngineeringHydroxybutyratesPolyestersPolyhydroxybutyratesCitrate (si)-SynthaseCRISPR-Associated ProteinsDNA HelicasesEscherichia coli ProteinsHydroxybutyratespoly-beta-hydroxybutyratePolyestersPolyhydroxybutyratesygcB protein, E coliEscherichia coliPoly-3-hydroxbutyrateTCA cycleType I-E CRISPR-Cas system

Identifiers

PMID27842593
PMCPMC5109708
OpenAlexW2550728222

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LicenceCC BY
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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.