Cited by 43Bacterial Genetics and BiotechnologyATP Synthase and ATPases ResearchDrug Transport and Resistance Mechanisms

The DOI matches its Crossref record; 54 of the 54 references it cites were found in a registry or an index.

Fluorescein analogues inhibit SecA ATPase: the first sub-micromolar inhibitor of bacterial protein translocation.

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Abstract

SecA is a central component of the general secretion system that is essential for bacterial growth and thus an ideal target for antimicrobial agents. A series of fluorescein analogues were first screened against the ATPase activity using the truncated unregulated SecA catalytic domain. Rose bengal (RB) and erythrosin B (EB) were found to be potent inhibitors SecA with IC 50 values of 0.5 μ M and 2 μ M, respectively. RB and EB inhibit the catalytic SecA ATPase more effectively than the F 1 F 0‐proton ATPase. We used three assays to test the effect of these compounds on full‐length SecA ATPase: in solution (intrinsic ATPase), in membrane preparation, and translocation ATPase. RB and EB show the following trend in terms of IC 50 values: translocation ATPase<membrane ATPase<intrinsic ATPase. Very importantly, the potency of these fluorescein analogues in inhibiting the truncated SecA ATPase correlates with their ability to inhibit the biologically relevant protein translocation activity of SecA. The in vitro translocation of proOmpA precursors into membrane vesicles is strongly inhibited by RB with IC 50 values of approximately 0.25 μ M, making RB the most potent inhibitor of SecA ATPase and SecA‐dependent protein translocation reported thus far. The ability of these compounds to inhibit SecA also directly translates into antibacterial effects. Our findings show the value of fluorescein analogues as probes for mechanistic studies of SecA functions and for the potential development of new antimicrobial agents with SecA as the target.

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Crossref · 10.1002/cmdc.201100594

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  • 4-oxo-5-cyano thiouracils, fluorescein analogs, and triazole-pyrimidine analogs are SecA inhibitors that are active against E. coli and S. aureus.

    “Further studies identified 4-oxo-5-cyano thiouracils (Chaudhary et al., 2015), Fluorescein analogs (Huang et al., 2012) and triazole-pyrimidine analogs (Cui et al., 2016; Jin et al., 2016) as SecA inhibitors that are active against E. coli and S. aureus (Rao et al., 2014; De Waelheyns et al., 2015; Van Puyenbroeck and Vermeire, 2018).”

    From The Dynamic SecYEG Translocon (2021) · cites this paper as Huang et al., 2012

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Metadata

Authors
Huang, Y., Wang, H., Gao, F., Li, M., Yang, H., Wang, B., & Tai, P. C.
Affiliations
  • Georgia State University (US)
  • University of Massachusetts Chan Medical School (US)
  • Shandong University (CN)
Corresponding author
  • Wang, Binghe
  • Tai, Phang C.
Venue
ChemMedChem
Publisher
Wiley
Published
2012-02-22
Volume
7
Issue
4
Pages
571-577
ISSN
  • 1860-7179 (ISSN-L)
  • 1860-7187
OpenAlex
W2070724434
Cited by
42
References
54
Citations by year
2025: 4 · 2024: 3 · 2023: 2 · 2022: 1 · 2021: 8 · 2020: 4 · 2018: 2 · 2017: 1 · 2016: 5 · 2015: 5 · 2014: 5 · 2013: 2
FWCI
2.31
Type
journal article
Language
en
Open access
Locations
  • ChemMedChem (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of General Medical Sciences (R01GM034766, GM 34766)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › ATP Synthase and ATPases Research
  • Health Sciences › Medicine › Oncology › Drug Transport and Resistance Mechanisms
Keywords
SecA ATPase, rose bengal, erythrosin B, protein translocation, bacterial protein secretion, ATPase inhibitors, antibacterial agents
MeSH terms
SEC Translocation Channels, SecA Proteins, Adenosine Triphosphatases, Anti-Bacterial Agents, Bacillus subtilis, Bacterial Outer Membrane Proteins, Bacterial Proteins, Drug Evaluation, Preclinical, Enzyme Inhibitors, Erythrosine, Escherichia coli, Models, Molecular, Rose Bengal, Fluorescein, Inhibitory Concentration 50, Protein Transport, Membrane Transport Proteins

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