Evidence map›Paper›PMID 32895498›Full record

ArticleNature chemical biology2021

Optogenetic control of the lac operon for bacterial chemical and protein production.

Makoto A Lalwani, Samantha S Ip, César Carrasco-López, Catherine Day, Evan M Zhao, Hinako Kawabe, José L Avalos

Abstract read
PubMed Publisher
In one paragraph

Article in Nature chemical biology, 2021. 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
6.9field-weighted citation impact, top 2% 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, 124 citations in OpenAlex.

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  5. Probiotic-Based Materials as Living Therapeutics.Advanced materials (Deerfield Beach, Fla.) · 2026
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  17. Construction and Characterization of Light-Responsive Transcriptional Systems.Methods in molecular biology (Clifton, N.J.) · 2024
    Article
  18. Article
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  20. Review
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

7 authors at 1 institution in 1 country.

Makoto A LalwaniDepartment of Chemical and Biological Engineering, Princeton University, Princeton, NJ, USA.
Samantha S Ip *Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ, USA.ORCID http://orcid.org/0000-0002-5139-544X
César Carrasco-López *Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ, USA.ORCID http://orcid.org/0000-0002-3853-8776
Catherine DayDepartment of Molecular Biology, Princeton University, Princeton, NJ, USA.ORCID http://orcid.org/0000-0002-5485-4023
Evan M ZhaoDepartment of Chemical and Biological Engineering, Princeton University, Princeton, NJ, USA.
Hinako KawabeDepartment of Chemical and Biological Engineering, Princeton University, Princeton, NJ, USA.
José L AvalosDepartment of Chemical and Biological Engineering, Princeton University, Princeton, NJ, USA. javalos@princeton.edu.ORCID http://orcid.org/0000-0002-7209-4208
Princeton University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Control of the lac operon with isopropyl β-D-1-thiogalactopyranoside (IPTG) has been used to regulate gene expression in Escherichia coli for countless applications, including metabolic engineering and recombinant protein production. However, optogenetics offers unique capabilities, such as easy tunability, reversibility, dynamic induction strength and spatial control, that are difficult to obtain with chemical inducers. We have developed a series of circuits for optogenetic regulation of the lac operon, which we call OptoLAC, to control gene expression from various IPTG-inducible promoters using only blue light. Applying them to metabolic engineering improves mevalonate and isobutanol production by 24% and 27% respectively, compared to IPTG induction, in light-controlled fermentations scalable to at least two-litre bioreactors. Furthermore, OptoLAC circuits enable control of recombinant protein production, reaching yields comparable to IPTG induction but with easier tunability of expression. OptoLAC circuits are potentially useful to confer light control over other cell functions originally designed to be IPTG-inducible.

Indexed as

Gene Expression Regulation, BacterialBioreactorsButanolsEscherichia coliIsopropyl ThiogalactosideLac OperonLightLight Signal TransductionMetabolic EngineeringMevalonic AcidOptogeneticsPromoter Regions, GeneticButanolsisobutyl alcoholIsopropyl ThiogalactosideMevalonic Acid

Identifiers

PMID32895498
OpenAlexW3083110853

What OpenQuestion holds

Textmetadata
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.