Marine Siderophores: Structures, Biological Roles and Applications

A special issue of Marine Drugs (ISSN 1660-3397).

Deadline for manuscript submissions: closed (15 November 2021) | Viewed by 3554

Special Issue Editor


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Guest Editor
Departamento de Química Fundamental e Centro de Investigacións Científicas Avanzadas (CICA), Universidade da Coruña, A Coruna, Spain
Interests: marine natural products; isolation and structural elucidation; organic synthesis; biological activity; medicinal chemistry; bacterial iron uptake; siderophores
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Special Issue Information

Dear Colleagues,

Iron is a crucial nutrient in virtually all living organisms. Due to the very low bioavailability of free ion, one of the major strategies used by bacteria and fungi, and also plants, entailed the use of siderophores which are low molecular weight organic compounds that have extremely high affinity for ferric iron. They are excreted to form a ferric-siderophore complex which is then internalized by the appropriate transport mechanism. While the terrestrial siderophores have been extensively study, the structural features of most marine siderophores have not yet been determined. For pathogenic microorganisms, they are key virulence factors to enhance the infection disease. Iron uptake mechanism mediated by siderophores provides an ideal target for antimicrobial and therapeutic potential applications: siderophore-mediated drug delivery (Trojan horse strategy), iron overload, vaccines, etc. Additionally to medical applications, they can be used effectively for numerous processes such as bioremediation, biofertilization, metals detection (siderosensing), molecular imagining, etc. Current research also focuses on the understanding their ecological roles and on the development of their chemical synthesis to promote new biotechnological applications. As Guest Editor of this Special Issue of Marine Drugs, I invite you to provide recent advances in all the aspects dealing with Marine Siderophores.

Prof. Dr. Carlos Jiménez
Guest Editor

Manuscript Submission Information

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Keywords

  • Siderophores;
  • Iron uptake mechanisms;
  • Synthesis of natural siderophores and their analogs;
  • Siderophore–drug conjugates;
  • Siderophore-mediated drug delivery;
  • Biotechnological applications

Published Papers (1 paper)

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Review

11 pages, 3006 KiB  
Review
Iron-Utilization System in Vibrio vulnificus M2799
by Katsushiro Miyamoto, Hiroaki Kawano, Naoko Okai, Takeshi Hiromoto, Nao Miyano, Koji Tomoo, Takahiro Tsuchiya, Jun Komano, Tomotaka Tanabe, Tatsuya Funahashi and Hiroshi Tsujibo
Mar. Drugs 2021, 19(12), 710; https://doi.org/10.3390/md19120710 - 17 Dec 2021
Cited by 5 | Viewed by 2997
Abstract
Vibrio vulnificus is a Gram-negative pathogenic bacterium that causes serious infections in humans and requires iron for growth. A clinical isolate, V. vulnificus M2799, secretes a catecholate siderophore, vulnibactin, that captures ferric ions from the environment. In the ferric-utilization system in V [...] Read more.
Vibrio vulnificus is a Gram-negative pathogenic bacterium that causes serious infections in humans and requires iron for growth. A clinical isolate, V. vulnificus M2799, secretes a catecholate siderophore, vulnibactin, that captures ferric ions from the environment. In the ferric-utilization system in V. vulnificus M2799, an isochorismate synthase (ICS) and an outer membrane receptor, VuuA, are required under low-iron conditions, but alternative proteins FatB and VuuB can function as a periplasmic-binding protein and a ferric-chelate reductase, respectively. The vulnibactin-export system is assembled from TolCV1 and several RND proteins, including VV1_1681. In heme acquisition, HupA and HvtA serve as specific outer membrane receptors and HupB is a sole periplasmic-binding protein, unlike FatB in the ferric-vulnibactin utilization system. We propose that ferric-siderophore periplasmic-binding proteins and ferric-chelate reductases are potential targets for drug discovery in infectious diseases. Full article
(This article belongs to the Special Issue Marine Siderophores: Structures, Biological Roles and Applications)
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