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Single-cell Analysis of Bacillus subtilis Biofilms Using Fluorescence Microscopy and Flow Cytometry
Published on: February 15, 2012
Synthesis of teichoic acid by Bacillus subtilis protoplasts
Journal of Bacteriology
|November 1, 1981
Summary
Bacillus subtilis W23 synthesizes ribitol teichoic acid externally using nucleotide precursors. This process, occurring on the cell surface, is crucial for bacterial cell wall biosynthesis.
Area of Science:
- Microbiology
- Biochemistry
- Cell Biology
Background:
- Teichoic acids are essential cell wall components in Gram-positive bacteria.
- Bacillus subtilis is a model organism for studying bacterial cell wall synthesis.
Purpose of the Study:
- To investigate the synthesis pathway of ribitol teichoic acid in Bacillus subtilis.
- To determine the cellular location and mechanism of teichoic acid polymerization.
Main Methods:
- Protoplast isolation and incubation with nucleotide precursors.
- Analysis of synthesized polymer composition and rate.
- Inhibition studies using trypsin and p-chloromercuribenzenesulfonate.
Main Results:
- Protoplasts synthesized poly(ribitol phosphate) from cytidine diphosphate-ribitol.
- Co-addition of cytidine diphosphate-glycerol and uridine diphosphate-N-acetylglucosamine increased synthesis 10-fold.
- Synthesis occurred on the outer cell surface and was inhibited by external agents.
Conclusions:
- Ribitol teichoic acid synthesis in Bacillus subtilis occurs extracellularly.
- The enzyme complex is transiently exposed at the cell surface during biosynthesis.
- Nucleotide precursors do not translocate across the membrane during synthesis.
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