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Published on: March 4, 2020
Manganese uptake and streptococcal virulence
Bart A Eijkelkamp1, Christopher A McDevitt, Todd Kitten
1Research Centre for Infectious Diseases, School of Molecular and Biomedical Science, University of Adelaide, Adelaide, SA, Australia.
Abstract:
Streptococcal solute-binding proteins (SBPs) associated with ATP-binding cassette transporters gained widespread attention first as ostensible adhesins, next as virulence determinants, and finally as metal ion transporters. In this mini-review, we will examine our current understanding of the cellular roles of these proteins, their contribution to metal ion homeostasis, and their crucial involvement in mediating streptococcal virulence. There are now more than 35 studies that have collected structural, biochemical and/or physiological data on the functions of SBPs across a broad range of bacteria. This offers a wealth of data to clarify the formerly puzzling and contentious findings regarding the metal specificity amongst this group of essential bacterial transporters. In particular we will focus on recent findings related to biological roles for manganese in streptococci. These advances will inform efforts aimed at exploiting the importance of manganese and manganese acquisition for the design of new approaches to combat serious streptococcal diseases.
Insights
Streptococcal solute-binding proteins (SBPs) are vital metal ion transporters. Understanding their role, especially manganese acquisition, is key to developing new strategies against streptococcal diseases.
Area of Science:
- Microbiology
- Molecular Biology
- Biochemistry
Background:
- Streptococcal solute-binding proteins (SBPs) linked to ATP-binding cassette transporters have been studied as adhesins, virulence factors, and metal ion transporters.
- Over 35 studies provide structural, biochemical, and physiological data on SBPs in diverse bacteria.
Purpose of the Study:
- To review current knowledge on the cellular functions of SBPs in streptococci.
- To elucidate their role in metal ion homeostasis and streptococcal virulence.
- To highlight recent findings on manganese's biological significance in streptococci.
Main Methods:
- Literature review of structural, biochemical, and physiological data on SBPs.
- Analysis of existing studies on SBP functions and metal specificity.
- Focus on recent research concerning manganese and streptococci.
Main Results:
- SBPs are crucial for metal ion transport and homeostasis in streptococci.
- Specific focus on manganese acquisition reveals its importance in streptococcal biology.
- Data clarifies previously contentious findings on metal specificity.
Conclusions:
- Understanding SBP functions, particularly manganese transport, is essential for combating streptococcal diseases.
- Targeting manganese acquisition pathways presents a potential therapeutic strategy.
- Further research on SBPs will advance strategies against serious streptococcal infections.
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