Cited by 67Gene Regulatory Network AnalysisMicrobial Metabolic Engineering and BioproductionBacterial Genetics and Biotechnology

Comparative Dose–Response Analysis of Inducible Promoters in Cyanobacteria

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Behle, Anna, Saake, Pia, Germann, Anna T., Dienst, Dennis, Axmann, Ilka M.·2020·ACS Synthetic Biology

Published version of a preprint

Abstract

Design and implementation of synthetic biological circuits highly depends on well-characterized, robust promoters with predictable input–output responses. While great progress has been made with heterotrophic model organisms such as Escherichia coli, the available variety of tunable promoter parts for phototrophic cyanobacteria is still limited. Commonly used synthetic and semisynthetic promoters show weak dynamic ranges or no regulation at all in cyanobacterial models. Well-controlled alternatives such as native metal-responsive promoters, however, pose the problems of inducer toxicity and lacking orthogonality. Here, we present the comparative assessment of dose–response functions of four different inducible promoter systems in the model cyanobacterium Synechocystis sp. PCC 6803. Using the novel bimodular reporter plasmid pSHDY, dose–response dynamics of the re-established vanillate-inducible promoter P vanCC was compared to the previously described rhamnose-inducible P rha, the anhydrotetracycline-inducible P L03, and the Co 2+ -inducible P coaT . We estimate individual advantages and disadvantages regarding dynamic range and strength of each promoter, also in comparison with well-established constitutive systems. We observed a delicate balance between transcription factor toxicity and sufficient expression to obtain a dose-dependent response to the inducer. In summary, we expand the current understanding and employability of inducible promoters in cyanobacteria, facilitating the scalability and robustness of synthetic regulatory network designs and of complex metabolic pathway engineering strategies.

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Crossref · 10.1021/acssynbio.9b00505

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  • Various inducible promoter systems have been adapted for cyanobacteria, including metal-responsive promoters such as PpetE, which reacts to copper levels, and sugar-responsive systems like PrhaBAD, activated by rhamnose presence.

    “Various inducible promoter systems have been adapted for cyanobacteria, including metal-responsive promoters such as PpetE, which reacts to copper levels, and sugar-responsive systems like PrhaBAD, activated by rhamnose presence [104,105].”

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Authors
Behle, A., Saake, P., Germann, A. T., Dienst, D., & Axmann, I. M.
Affiliations
  • Heinrich Heine University Düsseldorf (DE)
  • Uppsala University (SE)
Corresponding author
Axmann, Ilka M.
Venue
ACS Synthetic Biology
Published
2020-03-05
Volume
9
Issue
4
Pages
843-855
ISSN
2161-5063 (ISSN-L)
OpenAlex
W3010630503
Cited by
67
References
50
Citations by year
2026: 7 · 2025: 8 · 2024: 9 · 2023: 9 · 2022: 10 · 2021: 15 · 2020: 7 · 2019: 1
FWCI
3.32
Type
journal article
Language
en
Open access
Locations
  • ACS Synthetic Biology (publishedVersion)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
  • PubMed (publishedVersion)
Funders
  • Deutsche Forschungsgemeinschaft (391465903/GRK 2466)
  • Heinrich-Heine-Universit?t D?sseldorf
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gene Regulatory Network Analysis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial Metabolic Engineering and Bioproduction
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
Keywords
inducible promoters, cyanobacteria, Synechocystis sp. PCC 6803, dose-response relationship, dynamic range, synthetic biological circuits, metabolic pathway engineering
MeSH terms
Plasmids, Promoter Regions, Genetic, Vanillic Acid, Gene Expression Regulation, Bacterial, Synechocystis, Synthetic Biology, Metabolic Engineering

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