Related Experiment Video
Updated: May 20, 2026
08:29
Using Coculture to Detect Chemically Mediated Interspecies Interactions
Published on: October 31, 2013
Characterization and optimization of Bacillus subtilis ATCC 6051 as an expression host
Johannes Kabisch1, Andrea Thürmer, Tanno Hübel
1Pharmaceutical Biotechnology, Institute of Pharmacy, Ernst-Moritz-Arndt-University, Felix-Hausdorff-Str. 3, D-17487 Greifswald, Germany.
Journal of Biotechnology
|July 14, 2012
Summary
Bacillus subtilis ATCC 6051, a wild-type strain, is suitable for recombinant protein production. Genetic modification optimized this Bacillus subtilis strain for enhanced heterologous protein expression.
Area of Science:
- Microbiology
- Molecular Biology
- Biotechnology
Background:
- Bacillus subtilis is a widely used host for recombinant protein production.
- The laboratory strain B. subtilis 168 has known auxotrophies and limitations.
- Evaluating alternative B. subtilis strains is crucial for optimizing expression systems.
Purpose of the Study:
- To determine the genome sequence of Bacillus subtilis ATCC 6051.
- To assess its suitability as an expression host for recombinant protein production.
- To compare B. subtilis ATCC 6051 with the laboratory strain B. subtilis 168.
Main Methods:
- Whole-genome sequencing of Bacillus subtilis ATCC 6051.
- Comparative genomic analysis between B. subtilis ATCC 6051 and B. subtilis 168.
- Genetic modification of B. subtilis ATCC 6051 for protein expression.
Main Results:
- High genomic congruency between B. subtilis ATCC 6051 and B. subtilis 168, with minor differences.
- B. subtilis ATCC 6051 lacks auxotrophies of B. subtilis 168 and produces polyketides.
- Enhanced utilization of complex media and improved genomic stability in B. subtilis ATCC 6051 due to reduced natural competence.
- An optimized B. subtilis ATCC 6051 strain was developed for heterologous protein production.
Conclusions:
- Bacillus subtilis ATCC 6051 is a promising, undomesticated wild-type alternative to B. subtilis 168 for protein expression.
- Its inherent advantages, such as lack of auxotrophies and better media utilization, make it a robust host.
- Genetic engineering further enhances B. subtilis ATCC 6051 for efficient heterologous protein production.
Related Concept Videos
01:22Bioreactor Controls-III
Strain improvement is a foundational strategy in industrial microbiology aimed at maximizing microbial productivity, particularly because natural isolates typically yield commercially valuable products in very low concentrations. Although optimizing the culture medium and environmental conditions can improve yields, these adjustments are inherently limited by the organism’s genetic potential. As a result, the focus shifts toward genetic modifications to enhance biosynthetic capacity. The...
01:27Upstream Processing
Upstream processing represents a critical phase in biomanufacturing, wherein biological systems such as microorganisms, mammalian cells, or insect cells are cultivated to produce therapeutic proteins, vaccines, enzymes, or other biologically derived products. This phase encompasses all steps from the selection and genetic manipulation of the production organism to the cultivation of cells in bioreactors under tightly controlled environmental conditions.Host Selection and Genetic OptimizationThe...
01:33Bacterial Transformation
In 1928, bacteriologist Frederick Griffith worked on a vaccine for pneumonia, which is caused by Streptococcus pneumoniae bacteria. Griffith studied two pneumonia strains in mice: one pathogenic and one non-pathogenic. Only the pathogenic strain killed host mice.
Griffith made an unexpected discovery when he killed the pathogenic strain and mixed its remains with the live, non-pathogenic strain. Not only did the mixture kill host mice, but it also contained living pathogenic bacteria that...
Griffith made an unexpected discovery when he killed the pathogenic strain and mixed its remains with the live, non-pathogenic strain. Not only did the mixture kill host mice, but it also contained living pathogenic bacteria that...
01:33Bacterial Transformation
In 1928, bacteriologist Frederick Griffith worked on a vaccine for pneumonia, which is caused by Streptococcus pneumoniae bacteria. Griffith studied two pneumonia strains in mice: one pathogenic and one non-pathogenic. Only the pathogenic strain killed host mice.
Griffith made an unexpected discovery when he killed the pathogenic strain and mixed its remains with the live, non-pathogenic strain. Not only did the mixture kill host mice, but it also contained living pathogenic bacteria that...
Griffith made an unexpected discovery when he killed the pathogenic strain and mixed its remains with the live, non-pathogenic strain. Not only did the mixture kill host mice, but it also contained living pathogenic bacteria that...