Understanding microbial biomineralization at the molecular level: recent advances
Ankita Debnath1, Sayak Mitra1, Supratit Ghosh1
1Department of Bioscience and Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India.
World Journal of Microbiology & Biotechnology
|September 15, 2024
Summary
Microbial biomineralization, the process of mineral deposition by microbes, involves controlled and induced mechanisms. Understanding these processes, including organic-inorganic interactions, aids in biomimetic synthesis and microbial engineering.
Area of Science:
- Biogeochemistry
- Microbiology
- Solid-state Bioinorganic Chemistry
Background:
- Microbial biomineralization involves the precipitation of inorganic minerals (silicate, carbonate, phosphate, ferrate) influenced by microbial metabolic processes.
- Two primary types, microbially controlled mineralization (MCM) and microbially induced mineralization (MIM), have distinct underlying mechanisms.
- MCM is genetically determined, while MIM depends on cell morphology, surface structures, and extracellular polymeric substances (EPS).
Purpose of the Study:
- To provide a comprehensive overview of recent advancements in understanding both MCM and MIM.
- To elucidate the molecular mechanisms, including organic-inorganic biomolecular interactions, nucleation, and crystallization.
- To discuss the role of specific metabolic pathways and molecular operons in microbial biomineralization.
Main Methods:
- Review of current literature on microbial biomineralization.
- Analysis of organic-inorganic biomolecular interactions in template formation.
- Discussion of nucleation and crystallization processes.
- Examination of metabolic pathways and molecular operons involved.
Main Results:
- Organic template-mediated nucleation is a key mechanism in biomineralization.
- Detailed understanding of MCM and MIM mechanisms is still developing.
- Specific metabolic pathways and operons play crucial roles in directing biomineralization.
Conclusions:
- Elucidating microbial biomineralization mechanisms can enable biomimetic synthesis of minerals for therapeutic applications.
- This knowledge facilitates the engineering of microorganisms for commercial biominerals production.
- Further research into molecular mechanisms is essential for harnessing microbial biomineralization.
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