Identification of widely conserved biosynthetic gene cluster involved in pigment production of Bacillus subtilis
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View abstract on PubMed
Summary
This summary is machine-generated.Researchers discovered a novel pigment-producing gene cluster in Bacillus subtilis soil isolates. This finding expands the known repertoire of microbial secondary metabolites and aids in discovering new gene clusters.
Area Of Science
- Microbiology
- Metabolic Engineering
- Genomics
Background
- Bacillus subtilis is a well-studied bacterium for microbial secondary metabolite (SM) production.
- Identifying novel SMs and their biosynthetic gene clusters (BGCs) in Bacilli is challenging.
- Pigments serve as visible indicators for BGC discovery, even without prior functional knowledge.
Purpose Of The Study
- To characterize a novel pigment produced by a Bacillus subtilis soil isolate.
- To identify the biosynthetic gene cluster (BGC) responsible for pigment production.
- To discover new classes of SM BGCs for improved discovery pipelines in Bacilli.
Main Methods
- Comparative genomic analysis of B. subtilis isolates with pigment production.
- Characterization of pigment production conditions.
- Spectroscopic analysis (solid-state NMR, FTIR) of the pigment.
- Bioinformatic annotation of the identified BGC.
Main Results
- A novel pigment was observed in B. subtilis soil isolate MB9_B4.
- The responsible BGC was identified and found to contain genes related to tryptophan biosynthesis, suggesting a link to primary metabolism.
- Additional B. subtilis isolates, including historical strains like Bacillus aterrimus, were found to carry similar pigment BGCs.
- The chemical groups of the pigment were characterized using spectroscopic methods.
Conclusions
- A new class of SM BGC, linked to tryptophan biosynthesis, has been identified in Bacillus subtilis.
- This discovery provides a new avenue for identifying BGCs in Bacilli, particularly those not easily detected by current genome mining tools.
- The findings contribute to expanding the known diversity of microbial secondary metabolites and improving BGC discovery pipelines.
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