The DOI matches its Crossref record; 43 of the 43 references it cites were found in a registry or an index.
Redox Reactions of Phenazine Antibiotics with Ferric (Hydr)oxides and Molecular Oxygen
Open accessAbstract
Phenazines are small redox-active molecules produced by a variety of bacteria. Beyond merely serving as antibiotics, recent studies suggest that phenazines play important physiological roles, including one in iron acquisition. Here we characterize the ability of four electrochemically reduced natural phenazines--pyocyanin (PYO), phenazine-1-carboxylate (PCA), phenazine-1-carboxamide, and 1-hydroxyphenazine (1-OHPHZ)--to reductively dissolve ferrihydrite and hematite in the pH range 5-8. Generally, the reaction rate is higher for a phenazine with a lower reduction potential, with the reaction between PYO and ferrihydrite at pH 5 being an exception; the rate decreases as the pH increases; the rate is higher for poorly crystalline ferrihydrite than for highly crystalline hematite. Ferric (hydr)oxide reduction by reduced phenazines can potentially be inhibited by oxygen, where O2 competes with Fe(III) as the final oxidant The reactivity of reduced phenazines with 02 decreases in the order: PYO > 1-OHPHZ > PCA. Strikingly, reduced PYO,which isthe least reactive phenazine with ferrihydrite and hematite at pH 7, is the most reactive phenazine with O2. These results imply that different phenazines may perform different functions in environments with gradients of iron and O2.
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Cited by
Pierson, L. S., & Pierson, E. A. (2010) · Applied Microbiology and Biotechnology · doi:10.1007/s00253-010-2509-3 · Cited by 560
Saunders, S. H., Tse, E. C. M., Yates, M. D., Otero, F. J., Trammell, S. A., Stemp, E. D. A., Barton, J. K., Tender, L. M., & Newman, D. K. (2020) · Cell · doi:10.1016/j.cell.2020.07.006 · Cited by 328
Self-citationGradients and consequences of heterogeneity in biofilms
Jo, J., Price-Whelan, A., & Dietrich, L. E. P. (2022) · Nature Reviews Microbiology · doi:10.1038/s41579-022-00692-2 · Cited by 319
Bacterial community morphogenesis is intimately linked to the intracellular redox state
Dietrich, L. E. P., Okegbe, C., Price-Whelan, A., Sakhtah, H., Hunter, R. C., & Newman, D. K. (2013) · Journal of Bacteriology · doi:10.1128/jb.02273-12 · Cited by 291
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Metadata
- Authors
- Wang, Y., & Newman, D. K.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2008-02-20
- Volume
- 42
- Issue
- 7
- Pages
- 2380-2386
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W2034613935
- Cited by
- 279
- References
- 43
- FWCI
- 10.49
- Type
- journal article
- Language
- en
- Open access
- green
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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